Laser frequency switching method and device

Abstract

The present invention provides a laser frequency switching method and device, comprising: obtaining a target modulation frequency of a target output laser; determining, based on the target modulation frequency, the distribution of jump conditions for a reference laser, wherein the reference laser is a laser whose output frequency jumps to the target modulation frequency when the operating conditions of a laser emitting unit to which the reference laser belongs meet the jump conditions; and adjusting the laser emitting unit according to the distribution of the jump conditions. By inputting the target modulation frequency into the laser emitting unit, when the output frequency of the laser emitted by the laser emitting unit jumps to the target modulation frequency, the distribution of the jump conditions for the reference laser is determined based on the operating conditions of the laser emitting unit at the time of the jump. This allows rapid switching of the laser output frequency to be achieved directly by changing the operating conditions of the laser emitting unit, reducing operational difficulty.

Description

Technical Field

[0001] The present invention relates to the field of laser technology, and in particular to a laser frequency switching method and device. Background Art

[0002] Laser cooling of atoms requires the use of two lasers with significantly different frequencies. For example, laser cooling of rubidium atoms requires a frequency difference of 6.8 GHz. Laser frequency switching is also required in the communications field. Therefore, high-speed, wide-range switching of laser frequencies holds significant application value in laser technology.

[0003] The current method for switching laser frequencies is to change the output frequency of the laser through acousto-optic modulators and electro-optic modulators. Acousto-optic modulators can achieve laser frequency shifting and switching from tens of megahertz to several gigahertz, but due to the small frequency shift range of the acousto-optic modulator, it cannot achieve a wide range of adjustment, resulting in limited use of laser frequency switching. While electro-optic modulators can achieve laser frequency shifting and switching over a larger range of tens of gigahertz, the laser spectrum of the electro-optic modulator contains two frequency components, positive and negative sidebands, making it difficult to accurately switch the laser frequency, resulting in difficult operation and low modulation efficiency. Furthermore, neither of the above-mentioned optical modulation devices can withstand high-power lasers, which further affects the practicality of laser frequency switching. Summary of the Invention

[0004] The present invention provides a laser frequency switching method and device to solve the problems of currently changing the laser output frequency through acousto-optic modulators and electro-optic modulators, such as limited adjustment range, poor output frequency accuracy, and low adjustable laser power, which in turn increase the difficulty of laser frequency switching and reduce practicality.

[0005] In a first aspect, the present invention provides a laser frequency switching method, comprising:

[0006] Obtaining a target modulation frequency of a target output laser;

[0007] Based on the target modulation frequency, determining a distribution of jump conditions of a reference laser, wherein the reference laser is a laser whose output frequency jumps to the target modulation frequency when the operating conditions of the laser emitting unit to which the reference laser belongs meet the jump conditions;

[0008] The laser emitting unit is adjusted according to the distribution of the jump conditions.

[0009] Optionally, the jump condition of the reference laser includes: the operating temperature and operating current of the laser emitting unit.

[0010] Optionally, determining the distribution of the jump conditions of the reference laser based on the target modulation frequency includes:

[0011] Obtaining the current operating temperature of the laser emitting unit;

[0012] adjusting the operating current of the laser emitting unit to obtain the output laser frequency of the reference laser;

[0013] When the output laser frequency jumps and the output laser frequency jumps to the target modulation frequency, obtaining a current operating current value of the laser emitting unit, wherein the jump condition of the reference laser includes a current operating temperature and a current operating current value of the laser emitting unit;

[0014] The operating temperature of the laser emitting unit is adjusted to obtain the distribution of the jump conditions of the reference laser.

[0015] Optionally, obtaining a target modulation frequency of a target output laser includes:

[0016] Obtaining the initial laser frequency of the target output laser;

[0017] Acquiring a target modulation amplitude of the target output laser;

[0018] A target modulation frequency of a target output laser is acquired according to the initial laser frequency and the target modulation amplitude.

[0019] Optionally, obtaining a target modulation frequency of a target output laser further includes:

[0020] Acquire the type of the laser modulation unit to which the target output laser belongs;

[0021] determining, based on the type of the laser modulation unit, the number of target modulation frequencies output by the laser modulation unit;

[0022] In the case of including at least two target modulation frequencies, the distribution of the jump conditions is determined according to the number of the target modulation frequencies.

[0023] Optionally, adjusting the laser emitting unit to which the reference laser belongs according to the distribution of the jump conditions includes:

[0024] Obtaining the current operating temperature of the laser emitting unit;

[0025] Determining a target operating current for the reference laser to undergo a jump based on a distribution of the jump conditions and the current operating temperature;

[0026] The laser emitting unit is adjusted according to the target operating current.

[0027] Optionally, adjusting the laser emitting unit according to the target operating current includes:

[0028] Obtaining a maximum modulation speed of a current modulation unit corresponding to the laser emitting unit;

[0029] Obtaining a maximum modulation response speed of the laser emitting unit;

[0030] A target modulation speed of the current modulation unit is determined based on the maximum modulation speed and the maximum modulation response speed.

[0031] In a second aspect, the present invention further provides a laser frequency switching device, comprising:

[0032] A jump generating unit, the jump generating unit including a laser, the jump generating unit being used to output a reference laser, adjust the laser output frequency of the reference laser according to the operating temperature and the operating current, obtain the jump condition of the reference laser according to the laser output frequency, and output the target laser when the operating temperature and the operating current of the jump generating unit meet the jump condition.

[0033] Optionally, the laser frequency switching device further includes:

[0034] A target output laser injection unit is connected to the jump generation unit, and the target output light injection unit is used to provide a target modulation frequency for the jump generation unit so that the jump generation unit obtains the jump generation condition when the laser output frequency jumps to the target modulation frequency.

[0035] Optionally, the laser frequency switching device further includes:

[0036] An output laser amplifying unit is connected to the transition generating unit and is used to amplify the target laser when the transition generating unit outputs the target laser.

[0037] As can be seen from the above technical solutions, the present invention provides a laser frequency switching method and device, which includes: obtaining a target modulation frequency of a target output laser; determining the distribution of jump conditions of a reference laser based on the target modulation frequency, wherein the reference laser is a laser whose output frequency jumps to the target modulation frequency when the working conditions of the laser emitting unit to which the reference laser belongs meet the jump conditions; and adjusting the laser emitting unit according to the distribution of the jump conditions. In the embodiment of the present application, by inputting the target modulation frequency into the laser emitting unit, when the output frequency of the laser emitted by the laser emitting unit itself jumps and jumps to the target modulation frequency, the distribution of the jump conditions of the reference laser is determined according to the working conditions of the laser emitting unit when the jump occurs, and the working conditions of the laser emitting unit are adjusted according to the distribution of the jump conditions, a laser whose output frequency is the target modulation frequency can be directly obtained, thereby realizing rapid switching of the laser output frequency, reducing the difficulty of operation, and thus improving the practicality and convenience of the laser frequency switching method. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 A schematic flow chart of a laser frequency switching method provided in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of the distribution of jump conditions of a laser frequency switching method provided in an embodiment of the present application;

[0041] Figure 3 A schematic structural diagram of a laser frequency switching device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The embodiments will be described in detail below, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following embodiments do not represent all implementation methods consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims. In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways, and the device embodiments described below are merely exemplary.

[0043] like Figure 1As shown, an embodiment of the present application provides a laser frequency switching method, comprising:

[0044] Step S110 : obtaining a target modulation frequency of a target output laser.

[0045] Exemplarily, the number of the target output lasers is at least two. The target modulation frequency includes: the target output laser can be directly obtained based on the target modulation frequency; the initial laser can be output by the first laser, and the initial laser output by the first laser can be modulated by an optical modulator according to the target modulation frequency; the target output laser with the target modulation frequency can be output by changing the laser frequency of the initial laser and / or changing the modulation frequency of the optical modulator. Exemplarily, the initial laser can be output by the main laser to the electro-optical modulator, and the electro-optical modulator can modulate the frequency of the initial laser to the target modulation frequency according to the received modulation signal, and output two target output lasers with different frequencies.

[0046] Step S120: Based on the target modulation frequency, determine the distribution of the jump conditions of the reference laser, wherein the reference laser is a laser whose output frequency jumps to the target modulation frequency when the working conditions of the laser emitting unit to which the reference laser belongs meet the jump conditions.

[0047] Exemplarily, the laser emitting unit may be a second laser, configured to receive the injected target output laser light and output a reference laser light. The output frequency of the reference laser light changes according to changes in the operating conditions of the laser emitting unit, and when the operating conditions of the laser emitting unit meet a transition condition, the output frequency of the reference laser light transitions to the target modulation frequency. The second laser may be an injection-locked laser, capable of outputting laser light at a frequency identical to the frequency of the injected target output laser light. When at least two lasers are simultaneously input into the injection-locked laser, only one laser light frequency can be output under the same operating conditions. For example, the frequency of the reference laser light can be transitioned to the target modulation frequency by receiving the target output laser light from a slave laser, emitting the reference laser light from the slave laser, and adjusting an operating condition adjustment unit associated with the slave laser to output an adjustment signal to the slave laser. The output frequency of the reference laser light can be varied by adjusting the operating conditions of the laser emitting unit, and the output frequency can be monitored. If the output frequency transitions but does not transition to the target modulation frequency, the operating conditions of the laser emitting unit can be slowly fine-tuned. The working conditions of the laser emitting unit corresponding to the output frequency jump to the target modulation frequency can be recorded as the jump conditions. Multiple jump conditions can be obtained multiple times, and the jump curve of the target modulation frequency can be drawn to obtain the distribution of the above jump conditions.

[0048] Step S130: adjusting the laser emitting unit according to the distribution of the jump conditions.

[0049] Exemplarily, at least two target modulation frequencies for target output laser light can be injected into the laser emitting unit. A target operating condition for the laser emitting unit can be determined based on the distribution of the jump conditions and the target switching frequency of the laser light to be output by the laser emitting unit. Based on the target operating condition, the operating condition of the laser emitting unit can be adjusted to achieve rapid switching of the laser frequency output by the laser emitting unit between the at least two target modulation frequencies. For example, two target output laser light with different frequencies can be injected into the slave laser via an electro-optical modulator. Based on the target switching frequency, the target operating condition of the slave laser can be determined. A working condition adjustment unit associated with the slave laser can then send an adjustment instruction to the slave laser so that the slave laser outputs a laser light with a frequency of the target switching frequency.

[0050] For example, the current operating conditions of the laser emitting unit can be obtained, a method for adjusting the operating conditions of the laser emitting unit can be obtained, and based on the difficulty of the method for adjusting the operating conditions, factors to be adjusted for the operating conditions can be determined. Based on factors influencing the operating conditions other than the factors to be adjusted, the current operating conditions can be matched with the distribution of the jump conditions. Based on the matching results, an adjustment amount for the factors to be adjusted can be determined, and the operating conditions of the laser emitting unit can be adjusted based on the factors to be adjusted and the adjustment amount.

[0051] By inputting the target modulation frequency into the laser emitting unit, when the output frequency of the laser emitted by the laser emitting unit itself jumps and jumps to the target modulation frequency, the distribution of the jump conditions of the reference laser is determined according to the working conditions of the laser emitting unit when the jump occurs, and the working conditions of the laser emitting unit are adjusted according to the distribution of the jump conditions. The laser with an output frequency of the target modulation frequency can be directly obtained, thereby realizing rapid switching of the laser output frequency, reducing the difficulty of operation, and thus improving the practicality and convenience of the laser frequency switching method.

[0052] According to some embodiments, the jump condition of the reference laser includes: the operating temperature and the operating current of the laser emitting unit.

[0053] By adjusting the operating temperature and current of the laser emitting unit, the output frequency of the reference laser can be adjusted, allowing the reference laser to reach a transition state. The ease of adjusting the operating temperature and current of the laser emitting unit reduces the difficulty of transitioning, improves regulation efficiency, and enables the reference laser to rapidly switch between two frequencies with significantly different frequencies.

[0054] According to some embodiments, determining the distribution of the transition conditions of the reference laser based on the target modulation frequency includes:

[0055] Obtaining the current operating temperature of the laser emitting unit;

[0056] Adjusting the operating current of the laser emitting unit to obtain the output laser frequency of the reference laser;

[0057] When the output laser frequency jumps and the output laser frequency jumps to the target modulation frequency, obtaining the current operating current value of the laser emitting unit, wherein the jump condition of the reference laser includes the current operating temperature and the current operating current value of the laser emitting unit;

[0058] The operating temperature of the laser emitting unit is adjusted to obtain the distribution of the jump conditions of the reference laser.

[0059] Exemplarily, the adjustment temperature may be determined based on the temperature of the environment in which the laser emitting unit is located, or based on the standard operating temperature range of the laser emitting unit, and / or the adjustment capability of a temperature adjustment unit associated with the laser emitting unit.

[0060] By determining the distribution of the jump conditions of the reference laser through the above method, the data integrity of the jump conditions can be guaranteed, and it is convenient to select appropriate jump conditions according to the current working conditions of the reference laser, which can reduce the operational difficulty of laser frequency switching and improve switching efficiency.

[0061] According to some embodiments, obtaining a target modulation frequency of a target output laser includes:

[0062] Obtaining the initial laser frequency of the target output laser;

[0063] Obtaining a target modulation amplitude of the target output laser;

[0064] According to the initial laser frequency and the target modulation amplitude, a target modulation frequency of the target output laser is obtained.

[0065] For example, the initial laser light inputted from the master laser may be modulated by an optical modulator, and the modulation amplitude of the optical modulator may be adjusted to a target modulation amplitude.

[0066] By modulating the input initial laser through an optical modulator, high-speed modulation of the laser can be achieved, the difficulty of modulation can be reduced, the preparation process of the target modulation frequency can be simplified, and the efficiency and practicality of the laser frequency switching method can be improved.

[0067] According to some embodiments, obtaining the target modulation frequency of the target output laser further includes:

[0068] Obtaining the type of the laser modulation unit to which the target output laser belongs;

[0069] determining the number of target modulation frequencies output by the laser modulation unit based on the type of the laser modulation unit;

[0070] In the case of including at least two target modulation frequencies, the distribution of the jump conditions is determined according to the number of the target modulation frequencies.

[0071] Exemplarily, the laser modulation unit may include an acousto-optic modulator, an electro-optic modulator, a thermo-optic modulator, and an all-optical modulator. For example, when the initial laser is modulated by an electro-optic modulator, adjusting the target modulation amplitude applied to the electro-optic modulator can effectively suppress the carrier frequency component in the optical frequency and maximize the amplitude of the ±1st-order sidebands. Therefore, when the initial frequency of the master laser is W0 and the target modulation amplitude of the electro-optic modulator is ω1, the frequency component of the laser after passing through the electro-optic modulator is W0±ω1, where W0+ω1 is the positive first-order sideband and W0-ω1 is the negative first-order sideband. Therefore, the number of outputs of the target modulation frequency can be determined by the type of laser modulation unit.

[0072] It should be noted that since the laser light after passing through the electro-optic modulator contains two positive and negative sideband frequency components, these two frequency components can be injected into the slave laser simultaneously as injection laser light. In this case, the two lasers with different frequencies are in a competitive relationship. Under the same operating conditions, only one laser frequency can be output at a time. In other words, after injection locking, the distribution of the jump conditions of the two laser frequencies will appear.

[0073] For example, when obtaining the target modulation frequency through an electro-optical modulator, the initial laser frequency output by the master laser can be set to 377.05927 THz, the target modulation amplitude of the fiber electro-optical modulator can be set to 6.8 GHz, and the laser frequency of the slave laser can be set to 377.75349 THz when not injection locked. At this time, the laser frequency of the electro-optical modulator's positive first-order sideband is 377.06617 THz, and the laser frequency of the negative first-order sideband is 377.05247 THz. The laser light modulated by the fiber electro-optical modulator can be injected into the slave laser, and the slave laser's operating conditions can be adjusted to identify the transition condition. When the slave laser's operating temperature is 21.3°C and the operating current is 103 mA, the laser frequency output by the slave laser is 377.06617 THz, indicating that the positive first-order sideband in the injected light was successfully injected. The operating temperature and operating current at this time can be used as the transition condition for the positive first-order sideband. When the operating temperature of the slave laser is 21.3°C and the operating current is 88mA, the laser frequency output from the slave laser is 377.05247THz, indicating that the negative first-order sideband in the injected light is successfully injected. The operating temperature and operating current at this time can be used as the transition conditions of the negative first-order sideband.

[0074] like Figure 2 As shown, Figure 2 A schematic diagram illustrating the distribution of transition conditions for a laser frequency switching method provided in an embodiment of the present application. Broken line 1 is the distribution curve for the transition conditions of the negative primary sideband, and broken line 2 is the distribution curve for the transition conditions of the positive primary sideband. The horizontal axis of the distribution diagram of the transition conditions represents the operating temperature of the laser emitting unit, and the vertical axis represents the operating current. The points on broken lines 1 and 2 represent the operating condition points at which the reference laser transitions to the target output laser. A transition can only occur at these operating condition points.

[0075] Therefore, according to the type of laser modulation unit, the number of target modulation frequencies is determined, and then the distribution of the jump conditions is determined, which can improve the integrity and accuracy of the data, and avoid the problem of mixing the jump conditions of each target laser frequency when multiple target laser frequencies are input at the same time, which affects the accuracy of laser frequency switching, thereby improving the practicality and convenience of laser frequency switching.

[0076] According to some embodiments, adjusting the laser emitting unit to which the reference laser belongs according to the distribution of the jump conditions includes:

[0077] Obtaining the current operating temperature of the laser emitting unit;

[0078] Determining a target operating current for the reference laser to undergo a jump based on the distribution of the jump conditions and the current operating temperature;

[0079] According to the target operating current, the laser emitting unit is adjusted.

[0080] For example, the operating current of the laser emitting unit can be adjusted by a voltage modulator. The relationship between the voltage and current output by the voltage modulator can be determined based on the modulation parameters of the voltage modulator, and the operating current can be adjusted by adjusting the output voltage of the voltage modulator. The current operating temperature of the laser emitting unit can be obtained and matched in the distribution of the jump conditions of the target modulation frequency. When the current operating temperature is matched, the operating current of the laser emitting unit can be directly adjusted. When the current operating temperature is not matched, the operating temperature of the laser emitting unit can be adjusted to a temperature closest to the current operating temperature, and then the operating current can be adjusted based on the adjusted operating temperature.

[0081] Since the operating temperature of the laser emitting unit is difficult to adjust, the stability is poor, and the process is complicated, it is prioritized to adjust the operating current of the laser emitting unit. This can reduce the difficulty of switching the laser frequency, improve the switching efficiency, ensure the accuracy of frequency switching, and thus improve the switching quality of the laser frequency switching.

[0082] According to some embodiments, adjusting the laser emitting unit according to the target operating current includes:

[0083] Obtaining the maximum modulation speed of the current modulation unit corresponding to the laser emitting unit;

[0084] Obtaining the maximum modulation response speed of the laser emitting unit;

[0085] Based on the maximum modulation speed and the maximum modulation response speed, a target modulation speed of the current modulation unit is determined.

[0086] For example, the smaller of the maximum modulation speed and the maximum modulation response speed can be selected as the target modulation speed of the current modulation unit. The current switching speed of the current modulation unit can be determined within the range allowed by the target modulation speed according to the switching requirements to control the speed of laser frequency switching.

[0087] The current switching speed of the current modulation unit is determined according to the maximum modulation speed of the current modulation unit and the maximum modulation response speed of the laser emitting unit. The maximum modulation speed can be quickly determined to speed up the laser frequency switching and further improve the switching efficiency.

[0088] The present invention also provides a laser frequency switching device, comprising:

[0089] A jump generating unit, the jump generating unit includes a laser, the jump generating unit is used to output a reference laser, adjust the laser output frequency of the reference laser according to the operating temperature and the operating current, obtain the jump condition of the reference laser according to the laser output frequency, and output the target laser when the operating temperature and the operating current of the jump generating unit meet the jump condition.

[0090] By changing the operating conditions of the transition generation unit and monitoring its laser output frequency, the transition conditions of the reference laser can be determined, and the target laser can be output when the operating conditions meet the transition conditions. This allows for rapid switching of the laser output frequency, reducing operational difficulty, improving laser frequency switching efficiency, and expanding the frequency range of laser switching, thereby enhancing the practicality and convenience of the laser frequency switching method.

[0091] According to some embodiments, the laser frequency switching device further includes:

[0092] The target output laser injection unit is connected to the jump generation unit, and the target output light injection unit is used to provide the target modulation frequency for the jump generation unit so that the jump generation unit obtains the jump generation condition when the laser output frequency jumps to the target modulation frequency.

[0093] Exemplarily, the target output laser injection unit may include a laser, a fiber electro-optic modulator, a signal source for the electro-optic modulator, and a Faraday rotator. The laser may emit initial laser light, and the fiber electro-optic modulator may modulate the frequency of the initial laser light according to modulation instructions from the signal source to achieve a target modulation frequency. The Faraday rotator may be used to change the polarization angle of the injected laser light so that the injected laser light is injected into the transition generation unit.

[0094] The target output laser injection unit can provide a target modulation frequency for the jump generation unit, simplifying the steps of switching the target modulation frequency and improving the practicality and flexibility of the laser frequency switching device.

[0095] According to some embodiments, the laser frequency switching device further includes:

[0096] An output laser amplifying unit is connected to the jump generating unit and is used to amplify the target laser when the jump generating unit outputs the target laser.

[0097] Exemplarily, the output laser amplification unit may be a tapered amplifier.

[0098] The output laser amplification unit can amplify the power of the target laser to improve the laser output quality of the laser frequency switching device, thereby improving the integration level of the laser frequency switching device and improving the practicality and convenience of the laser frequency switching device.

[0099] like Figure 3 As shown, Figure 3 A schematic structural diagram of a laser frequency switching device provided in an embodiment of the present application. A slave laser 311 can output a target output laser according to a target modulation frequency. A first signal source 312 connected to the slave laser can be used to input a modulation voltage into an external modulation port of the slave laser 311 to adjust the operating current of the slave laser. A master laser 321 can output an initial laser, which, after being reflected by a first reflector 322 and a second reflector 323, is coupled to a fiber electro-optic modulator 324. A second signal source 325 connected to the fiber electro-optic modulator 324 can output a microwave signal so that the fiber electro-optic modulator 324 modulates the laser frequency of the initial laser to a target modulation frequency. The fiber electro-optic modulator 324 outputs the modulated laser to a third reflector 326, which reflects the laser to a first 1 / 2 wave plate 327 to adjust the polarization of the laser, thereby adjusting the polarization of the laser to vertical polarization so that the laser can be reflected after passing through a polarization beam splitter 328. The laser light incident on the polarization beam splitter 328 is reflected to the left. The reflected laser light passes through the second half-wave plate 329 to the left and enters the Faraday rotator 3210, which rotates the polarization of the incident laser light by 45 degrees in one direction before injecting it into the slave laser 311. The laser light output from the laser passes through the Faraday rotator 3210, then passes through the second half-wave plate 329, and is incident on the polarization beam splitter 328, where it is transmitted. The transmitted laser light is coupled to the tapered amplifier 330, where it is power-amplified and then output to obtain the final desired laser light.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0101] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0102] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0103] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the above-mentioned methods in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0104] In summary, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A laser frequency switching method, characterized in that: include: Obtaining a target modulation frequency of a target output laser; Based on the target modulation frequency, determining a distribution of jump conditions of a reference laser, wherein the reference laser is a laser whose output frequency jumps to the target modulation frequency when the operating conditions of the laser emitting unit to which the reference laser belongs meet the jump conditions; The laser emitting unit is adjusted according to the distribution of the jump conditions.

2. The laser frequency switching method according to claim 1, wherein: The jump condition of the reference laser includes: the operating temperature and the operating current of the laser emitting unit.

3. The laser frequency switching method according to claim 2, wherein: The determining, based on the target modulation frequency, a distribution of jump conditions of the reference laser light comprises: Obtaining the current operating temperature of the laser emitting unit; adjusting the operating current of the laser emitting unit to obtain the output laser frequency of the reference laser; When the output laser frequency jumps and the output laser frequency jumps to the target modulation frequency, obtaining a current operating current value of the laser emitting unit, wherein the jump condition of the reference laser includes a current operating temperature and a current operating current value of the laser emitting unit; The operating temperature of the laser emitting unit is adjusted to obtain the distribution of the jump conditions of the reference laser.

4. The laser frequency switching method according to claim 1, wherein: The step of obtaining a target modulation frequency of a target output laser comprises: Obtaining the initial laser frequency of the target output laser; Acquiring a target modulation amplitude of the target output laser; A target modulation frequency of a target output laser is acquired according to the initial laser frequency and the target modulation amplitude.

5. The laser frequency switching method according to claim 4, wherein: The step of obtaining the target modulation frequency of the target output laser further includes: Acquire the type of the laser modulation unit to which the target output laser belongs; determining, based on the type of the laser modulation unit, the number of target modulation frequencies output by the laser modulation unit; In the case of including at least two target modulation frequencies, the distribution of the jump conditions is determined according to the number of the target modulation frequencies.

6. The laser frequency switching method according to claim 2, wherein: The adjusting the laser emitting unit to which the reference laser belongs according to the distribution of the jump conditions includes: Obtaining the current operating temperature of the laser emitting unit; Determining a target operating current for the reference laser to undergo a jump based on a distribution of the jump conditions and the current operating temperature; The laser emitting unit is adjusted according to the target operating current.

7. The laser frequency switching method according to claim 6, wherein: The step of adjusting the laser emitting unit according to the target operating current includes: Obtaining a maximum modulation speed of a current modulation unit corresponding to the laser emitting unit; Obtaining a maximum modulation response speed of the laser emitting unit; A target modulation speed of the current modulation unit is determined based on the maximum modulation speed and the maximum modulation response speed.

8. A laser frequency switching device, characterized in that: include: A jump generating unit, the jump generating unit including a laser, the jump generating unit being used to output a reference laser, adjust the laser output frequency of the reference laser according to the operating temperature and the operating current, obtain the jump condition of the reference laser according to the laser output frequency, and output the target laser when the operating temperature and the operating current of the jump generating unit meet the jump condition.

9. The laser frequency switching device according to claim 8, wherein: Also includes: A target output laser injection unit is connected to the jump generation unit, and the target output laser injection unit is used to provide a target modulation frequency for the jump generation unit so that the jump generation unit obtains the jump condition when the laser output frequency jumps to the target modulation frequency.

10. The laser frequency switching device according to claim 8, wherein: Also includes: An output laser amplifying unit is connected to the transition generating unit and is used to amplify the target laser when the transition generating unit outputs the target laser.

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