Laser emission system, laser radar and laser emission method

Abstract

The present invention relates to a laser emission system, a laser radar and a laser emission method. The laser emission system includes a laser component, the laser component includes a plurality of microcavity lasers; a phased array component, the phased array component includes a plurality of phased array units; an optical waveguide component, the optical waveguide component includes a plurality of optical waveguide units, the optical waveguide unit is arranged between the microcavity laser and the phased array unit, and one optical waveguide unit corresponds to one microcavity laser and one phased array unit; and an adjustment component. The laser radar includes the aforementioned laser emission system. The laser emission method can be applied to the aforementioned laser emission system and the laser radar. Setting a microcavity laser as a laser source not only reduces the occupied space, but also reduces the power loss; a plurality of microcavity lasers, phased array units and optical waveguide units are connected and arranged one by one, and an adjustment component is arranged to adjust the emission of the laser, so that the laser emission is more accurate, and the adjustment is more convenient and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of driving radar, and in particular to a laser emission system, a laser radar and a laser emission method. Background Art

[0002] In the field of intelligent driving, laser radar detection technology has been widely used. Laser radar refers to a system that uses laser beams to detect target position, speed and other characteristic quantities. Traditional laser radars require high transmission power at the transmitter, consume large amounts of power, and are expensive. In the field of optical communications, a laser provides a light source and multiplexes light through an optical switch.

[0003] However, in the lidar system for intelligent driving, each vehicle needs to be equipped with a laser as the local oscillator frequency source and transmission source of the lidar system, which is costly and requires a large space. Due to the requirements of laser ranging, speed measurement and other functions, the adjustment of the laser is cumbersome and inconvenient to operate. Summary of the invention

[0004] Based on this, it is necessary to provide a laser emission system, a laser radar and a laser emission method. The laser emission system occupies a small space, has low power loss, is easy to adjust, and has low cost; the laser radar includes the aforementioned laser emission system, which makes the cost of laser emission lower, and reduces the cost and power loss of the overall laser radar; the laser emission method can be applied to the laser emission of the aforementioned laser emission system and the laser emission of the laser radar.

[0005] The technical solution is as follows:

[0006] On the one hand, a laser emission system is provided, including a laser component, the laser component including a microcavity laser, the microcavity lasers are provided in a plurality and the plurality of microcavity lasers are arranged in a row; a phased array component, the phased array component including a phased array unit, the phased array unit is provided in a plurality and corresponds one to one with the microcavity lasers; an optical waveguide component, the optical waveguide component including an optical waveguide unit, the optical waveguide unit is provided in a plurality and the optical waveguide unit is arranged between the microcavity laser and the phased array unit, one optical waveguide unit corresponds to one microcavity laser and one phased array unit; and an adjustment component, the adjustment component is used to adjust the output of the laser component.

[0007] The technical solution is further described below:

[0008] In one embodiment, the adjustment component includes a first adjuster, which is connected to the microcavity laser and is used to adjust the laser output frequency of the microcavity laser.

[0009] In one embodiment, the adjustment component includes a second adjuster, the second adjuster is connected to the phased array unit, and the second adjuster is used to adjust the laser output phase angle of the phased array unit.

[0010] In one embodiment, the microcavity laser is provided with a pump source, and the laser emission system further comprises a pump driver, and the pump driver is used to drive the pump source.

[0011] In one of the embodiments, it also includes an integrated substrate, and the laser component, the phased array component, the optical waveguide component and the adjustment component are all arranged on the integrated substrate.

[0012] In one embodiment, the microcavity lasers are arranged in rows horizontally, and the phased array units are arranged in rows horizontally and corresponding to the microcavity lasers; or the microcavity lasers are arranged in rows vertically, and the phased array units are arranged in rows vertically and corresponding to the microcavity lasers.

[0013] In one embodiment, the microcavity laser is a microdisk laser or a vertical cavity surface emitting laser; or the optical waveguide unit is an integrated optical waveguide or a cylindrical optical waveguide.

[0014] On the other hand, a laser radar is also provided, comprising a laser emission system as described in any of the above technical solutions, and the laser emission system is used for laser emission of the laser radar.

[0015] In addition, a laser emission method is also provided, which is applied to the laser emission of the laser emission system described in any of the above technical solutions or the laser emission of the laser radar described in the above technical solution, and the method includes:

[0016] According to the first preset requirement, the laser output frequency of all microcavity lasers is set by adjusting the components;

[0017] The microcavity laser outputs a first laser based on the setting of the adjustment component;

[0018] The optical waveguide unit receives the corresponding first laser and outputs it as a second laser;

[0019] The phased array unit receives the corresponding second laser and outputs a third laser in a preset laser emission direction.

[0020] The technical solution is further described below:

[0021] In one of the embodiments, before the phased array unit receives the corresponding second laser and outputs a third laser with a preset laser emission direction, it also includes: a second regulator adjusts the phase of the phased array unit so that the laser output phase angle of the phased array unit is a preset laser output phase angle.

[0022] The above-mentioned laser emission system sets a microcavity laser as a laser source, which not only reduces the occupied space, but also reduces the power loss; multiple microcavity lasers, phased array units and optical waveguide units are connected and set in a one-to-one correspondence, and an adjustment component is set to adjust the laser emission, so that the laser emission is more accurate, the adjustment is more convenient, and the cost is low.

[0023] The above-mentioned laser radar adopts the aforementioned laser emission system for laser emission, occupies a small space, has little power consumption loss and is low in cost.

[0024] The laser emission method sets the laser output frequency of the microcavity laser so that the output third laser can be emitted in a preset direction, and the adjustment is convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the laser emission system in the embodiment;

[0026] Figure 2 for Figure 1 A schematic diagram of a laser emission system from another perspective of an embodiment;

[0027] Figure 3 for Figure 1 Schematic diagram of emission adjustment of the laser emission system in the embodiment;

[0028] Figure 4 for Figure 1 Schematic diagram of the internal structure of the laser emission system in the embodiment;

[0029] Figure 5 for Figure 1 Schematic diagram of the overall process of the laser emission method in the embodiment.

[0030] Notes on the attached drawings:

[0031] 100. Laser component, 110. Microcavity laser, 200. Phased array component, 210. Phased array unit, 300. Optical waveguide component, 310. Optical waveguide unit, 400. Pump driver. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0033] It should be noted that when an element is referred to herein as being "fixed" to another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] like Figures 1 to 5 The embodiment shown provides a laser emission system, including a laser component 100, the laser component 100 includes a microcavity laser 110, and the microcavity laser 110 is provided in multiples and arranged in a row; a phased array component 200, the phased array component 200 includes a phased array unit 210, and the phased array unit 210 is provided in multiples and corresponds one to one with the microcavity laser 110; an optical waveguide component 300, the optical waveguide component 300 includes an optical waveguide unit 310, and the optical waveguide unit 310 is provided in multiples, and the optical waveguide unit 310 is arranged between the microcavity laser 110 and the phased array unit 210, and one optical waveguide unit 310 corresponds to one microcavity laser 110 and one phased array unit 210; and an adjustment component (not shown in the figure), the adjustment component is used to adjust the output of the laser component 100.

[0036] Setting a microcavity laser 110 as a laser source not only reduces the occupied space, but also reduces the power loss; multiple microcavity lasers 110, phased array units 210 and optical waveguide units 310 are connected and set in a one-to-one correspondence, and an adjustment component is set to adjust the laser emission, so that the laser emission is more accurate, the adjustment is more convenient, and the cost is low.

[0037] LiDAR detection technology has been widely used in the field of intelligent driving. However, due to some limitations of lasers, such as large injection volume, difficulty in integrating on chips and high production costs, the development of LiDAR-based autonomous driving technology has been slow.

[0038] LiDAR distance measurement usually adopts the Time Of Flight (TOF) distance measurement method. The laser source required by TOF LiDAR is a single-frequency pulse laser transmitter. During a pulse transmission, the flight time of the laser between transmission and reception is calculated. The laser is required to have high detectable energy when receiving, that is, the transmitter of the LiDAR is required to have high transmission power.

[0039] As a highly anticipated laser radar transmitter device, OPA (Optical Phase Array, abbreviated as OPA) has relatively strict requirements for the laser light source device it needs to match, that is, its light source is required to change the output wavelength, and at the same time, it cannot have too high an output power. In the communication band, tunable lasers as spectrum multiplexing functions can achieve this goal better. They have a good tunable bandwidth and can perform high-speed tuning scanning. However, such lasers are usually distributed feedback (DFB) lasers and external cavity (ECL) lasers. Even for DFB lasers, the feedback gratings they need still take up a lot of space and cannot be well arranged on the chip. The output laser can only be introduced into the beam splitter (Splittertree) through a single optical waveguide (Waveguide), and in the process of each level of beam splitting, it will cause a lot of power loss and introduce a certain amount of phase noise, resulting in reduced detection accuracy of the laser radar and increased system noise.

[0040] In the field of optical communications, generally only one laser is needed to provide a light source, and optical switches are used to multiplex light. In the lidar system for intelligent driving, each device (i.e. each car) needs to be equipped with a laser as the local oscillator frequency source and emission source of the lidar system (such as FMCW lidar). This requires strict control of the cost of each laser, and the large tunable lasers used in the field of optical communications are not well suited for this task.

[0041] Frequency Modulated Coherent Wavelength (FMCW) laser radar (i.e., frequency modulated continuous wave laser radar) uses a laser with a continuously changing frequency to emit lasers of different frequencies, and uses the received frequency difference to calculate the absolute distance detected. This mode requires a relatively small transmission power, and an optical phased array (OPA) (i.e., phased array assembly 200) integrated on a silicon platform of a Complementary Metal Oxide Semiconductor (CMOS) can be used to change the direction of the emitted laser, thereby controlling the scanning angle of the laser. The laser emission system and laser radar provided in this embodiment can be particularly applied to FMCW laser radars.

[0042] In the embodiment provided in the present application, the laser assembly 100 is used to emit a laser source, the optical waveguide assembly 300 is used to conduct the emitted laser source and transmit it to the phased array assembly 200, the phased array assembly 200 is used to emit laser light, and the adjustment assembly is used to adjust the output of the laser assembly 100. Of course, this is only for the convenience of explanation. If necessary, the adjustment assembly can be set to adjust the laser assembly 100 or the phased array assembly 200 or both the laser assembly 100 and the phased array assembly 200, which will not be repeated here.

[0043] It should be noted that:

[0044] Microcavity laser 110 refers to a laser whose resonant cavity size is at the wavelength of light. It has the characteristics of low threshold, high conversion efficiency, high-speed modulation, etc. This laser has obvious advantages over traditional semiconductor lasers and has broad application prospects in optical integration, optical interconnection, optical neural network and optical communication.

[0045] An optical waveguide is a medium device that guides light waves to propagate in it, also known as a dielectric optical waveguide. An optical waveguide is a guiding structure composed of a light-transparent medium (such as quartz glass) that transmits light-frequency electromagnetic waves.

[0046] Phased array is a phase compensation (or delay compensation) array, which can be used for both receiving and transmitting. Its working principle is to appropriately shift the phase (or delay) of the signals of the array elements arranged in a certain pattern to obtain the deflection of the array beam, and perform phase (or delay) compensation at different directions at the same time to obtain multiple beams. Its advantages are: it is very convenient and flexible to realize the electronic scanning of the beam within the space to be observed without mechanically rotating the array. At the same time, the size of the array can be made larger to improve the spatial gain;

[0047] The adjustment component is used to adjust the laser output. As needed, those skilled in the art may also integrate the adjustment component with the laser component 100 (ie, the adjustment component is a part of the laser component 100) to meet actual adjustment needs.

[0048] In one embodiment, the adjustment component includes a first adjuster (not shown in the figure), which is connected to the microcavity laser 110 and is used to adjust the laser output frequency of the microcavity laser 110 .

[0049] like Figure 3 As shown, the direction perpendicular to the horizontal direction is defined as the longitudinal direction. The laser output frequency of the microcavity laser 110 can be adjusted by using the first regulator. For different laser output frequencies, there is a corresponding longitudinal change amount of the phased array unit 210, so that the longitudinal position of the final output laser can be changed, thereby adjusting the emission direction of the laser to meet actual needs.

[0050] Of course, as needed, the first regulator includes a first storage element, which stores corresponding data between the laser output frequency and the laser longitudinal change amount, so that when the first regulator is adjusted, the corresponding data is retrieved and corresponding changes are generated.

[0051] Of course, as needed, the database of the peripheral device can also be called to meet actual needs.

[0052] In addition, the first regulator may be directly a part of the microcavity laser 110, or may be integrated with the microcavity laser 110. As required, the first regulator may be able to simultaneously regulate all microcavity lasers 110, thereby making the operation more convenient.

[0053] In one embodiment, the adjustment component includes a second adjuster (not shown in the figure), which is connected to the phased array unit 210 and is used to adjust the laser output phase angle of the phased array unit 210 .

[0054] like Figure 3 As shown, the horizontal surface where the phased array unit 210 is located is defined as horizontal, and the laser source emitted by each microcavity laser 110 can be well coupled into the corresponding phased array unit 210 through the optical waveguide unit 310, and the laser output phase angle of the phased array unit 210 is adjusted by the second regulator, so as to achieve the angle change in the horizontal direction of the phased array unit 210 and achieve one-dimensional scanning of the output free space.

[0055] The second regulator may be a part of the phased array unit 210 , or may be provided separately, or the second regulator may be able to regulate all the phased array units 210 , thereby making the regulation more convenient and efficient.

[0056] It should be noted that the second regulator changes the laser emission angle by changing the laser emission phase, thereby achieving laser output phase angle adjustment of the microcavity laser 110 .

[0057] like Figure 3 As shown, the first regulator is used to adjust the laser output frequency of the microcavity laser 110, thereby achieving output adjustment of the laser in the longitudinal direction; and the second regulator is used to adjust the laser output phase angle of the phased array unit 210, thereby achieving output adjustment of the laser in the lateral direction. The first regulator and the second regulator are adjusted jointly to achieve stereoscopic scanning of the laser output in the lateral and longitudinal directions, thereby improving the comprehensiveness of the scanning.

[0058] In addition, since there is no correlation between the phase modulation of the laser and the frequency modulation of the laser, they can be independently adjusted by the first regulator and the second regulator respectively, and the adjustments of the two will not affect each other.

[0059] like Figure 4 In the illustrated embodiment, the microcavity laser 110 is provided with a pump source, and the laser emission system further includes a pump driver 400, which is used to drive the pump source.

[0060] The microcavity laser 110 is provided with a pump source and, of course, a control circuit and other structures. The pump driver 400 is used to drive the start-up of the pump source to meet the start-up requirements of the microcavity laser 110 .

[0061] Furthermore, the pump driver 400 includes LED (Light Emitting Diode) optical pumping, which is low in cost and simple to manufacture.

[0062] The use of LED light pumping can choose not to integrate it on the integrated substrate, simplifying the processing process and reducing production costs.

[0063] In one embodiment, the laser emission system further includes an integrated substrate (not shown in the figure), and the laser component 100, the phased array component 200, the optical waveguide component 300 and the adjustment component are all arranged on the integrated substrate.

[0064] The laser component 100, the phased array component 200, the optical waveguide component 300, the first regulator, the second regulator, etc. are all integrated on the integrated substrate, which greatly reduces the occupied space.

[0065] Furthermore, the integrated substrate is a silicon substrate, which has low cost, simple process and convenient manufacturing.

[0066] like Figure 1 and Figure 2In the illustrated embodiment, the microcavity lasers 110 are arranged in rows horizontally, and the phased array units 210 are arranged in rows horizontally and correspondingly to the microcavity lasers 110; or the microcavity lasers 110 are arranged in rows vertically, and the phased array units 210 are arranged in rows vertically and correspondingly to the microcavity lasers 110.

[0067] The microcavity laser 110 and the phased array unit 210 are arranged correspondingly to meet the requirements of lateral and longitudinal adjustment, so that the microcavity laser 110 and the phased array unit 210 can achieve three-dimensional comprehensive scanning under the adjustment of the adjustment component (or the first adjuster and the second adjuster respectively).

[0068] In one embodiment, the microcavity laser 110 is a microdisk laser or a vertical cavity surface emitting laser; or the optical waveguide unit 310 is an integrated optical waveguide or a cylindrical optical waveguide.

[0069] The vertical cavity surface emitting laser uses a multilayer dielectric film with high reflectivity as a plane cavity mirror, and the laser is emitted perpendicular to the cavity mirror surface;

[0070] Microdisk lasers use total reflection at a curved interface to form cavity confinement, with the whispering gallery mode as the main resonance mode.

[0071] Many technologically mature microcavity lasers 110 are 1-10 wavelengths (300nm-1800nm) in size. A microdisk laser is a micro laser with a size of about 1um-50um. It uses LED lasers or tiny electrodes to provide pump sources, uses a microdisk as a resonant cavity, and adjusts the laser's emission frequency by changing the refractive index of the dielectric layer in the middle layer. The structure of this microdisk laser generally uses indium gallium phosphide doped with indium phosphide (InP) and other group V elements. They can be easily grown on a lightly doped silicon insulating layer (SOI, Silicon-On-Insulator) using Metal-Organic Chemical Vapor Deposition (MOCVD) and can be integrated on a silicon-based chip. The middle layer generally uses organic substances that are easy to change the refractive index, etc., and has a certain development foundation in the integration of silicon substrates and the preparation of small-scale arrays.

[0072] At the same time, since the main processes for preparing the cavity structure are electron beam etching and chemical vapor deposition, the process cost is relatively low, which has a great advantage in terms of cost; in terms of power output, the output power of a single micro-disk laser is generally below 2Mw, and its narrow line width can ensure single-mode output, which is easy to couple with the optical waveguide unit 310. In terms of the way of changing the wavelength of light, the micro-disk laser can be modulated by stress and current. The main principle is to change the wavelength of the output laser by changing the refractive index of the intermediate layer. Generally, the wavelength change of a single laser is about 3nm-10nm.

[0073] Integrated optical waveguides include planar (thin film) dielectric waveguides and strip dielectric waveguides. They are usually part of optoelectronic integrated devices (or systems), so they are called integrated optical waveguides.

[0074] A cylindrical optical waveguide, commonly called an optical fiber.

[0075] Of course, those skilled in the art may also select other microcavity lasers 110 and optical waveguide units 310 under the condition of meeting actual needs and requirements, which will not be described in detail here.

[0076] In one embodiment, the laser assembly 100 includes sixteen microdisk lasers, sixteen optical waveguide units 310, and sixteen phased array units 210. The numbers of microdisk lasers, optical waveguide units 310, and phased array units 210 are set accordingly as required, and will not be described in detail here.

[0077] in addition:

[0078] The entire laser emission system can be manufactured by combining the bottom-up growth process and the direct molecular bonding technique. The main preparation process is:

[0079] Molecular bonding technology: mainly through the method of metal oxide chemical deposition to grow indium gallium arsenide aluminum and indium phosphide layers on p-type doped indium phosphide wafers (III-V wafers), and then through molecular bonding technology to bond the indium phosphide wafer to silicon-based oxide insulator (silicon-on-insulator, SOI). Oxide insulators are usually patterned using molecular beam exposure (photolithography) and inductively coupled plasma etching (ICPetching) technology;

[0080] The bottom-up growth process is mainly used to prepare oxide insulators on silicon substrates, and a dense oxide insulating layer is prepared by using a benzocyclobutene (DVS-BCB) bonding technique and a selective-area bonding method.

[0081] This embodiment also provides a laser radar, including a laser emission system as described in any of the above embodiments, and the laser emission system is used for laser emission of the laser radar.

[0082] The aforementioned laser emission system is used for laser emission, which occupies a small space, has little power consumption loss and is low in cost.

[0083] When the laser emission system is applied to FMCW laser radar, due to the requirement that the frequency of the laser light source is continuously adjustable, the frequency of the laser light source needs to be modulated by an adjustment component. The aforementioned embodiment can just meet this modulation requirement, and the laser emission system occupies a small space, has low power consumption, is easy to modulate, and has low cost.

[0084] The entire laser emission system is designed with a silicon substrate, and optical overlay technology is used to prepare partitions on different modules, and the microcavity laser 110 and the phased array unit 210 are prepared on the same silicon substrate chip. Multiple microcavity lasers 110 are aligned with multiple optical waveguide units 310 of phased antennas leading to the phased array unit 210, so that the light emitted by each microcavity laser 110 can be coupled into the corresponding optical waveguide unit 310, and then enter the corresponding phased antenna position of the phased array unit 210, and perform phase conversion output to achieve one-dimensional scanning.

[0085] In this way, the entire laser emission system can be prepared on the silicon substrate material, and the installation of the on-chip integrated microcavity laser 110 and the phased array unit 210 is realized. The laser emitted by each microcavity laser 110 (such as a microdisk laser) is coupled and input by the corresponding optical waveguide unit 310, and is directly transmitted to a corresponding phased array unit 210. Since the multiple microcavity lasers 110 (or laser components 100) use the technology of overlay and etching on the entire substrate in the preparation, they have good same characteristics, and can make each microcavity laser 110 produce a wavelength linear change microcavity laser 110 with the same central wavelength and step length. The laser emitted by each microcavity laser 110 only needs to pass through the energy loss of coupling into the optical waveguide before being transmitted to the phased array unit 210, which effectively reduces energy loss and noise introduction, and makes the most of the power limit of the chip output of the phased array unit 210.

[0086] At the same time, while the phased array unit 210 changes the scanning angle (i.e., lateral adjustment) by changing the phase of the light wave to achieve one-dimensional scanning, the continuously variable frequency laser emitted by the laser can also change the emission angle in another direction by changing the frequency (i.e., longitudinal adjustment), thereby achieving true two-dimensional scanning of the phased array component 200.

[0087] like Figure 5 The embodiment shown further provides a laser emission method, which is applied to the laser emission of the laser emission system described in any of the above embodiments or the laser emission of the laser radar described in the above embodiments, comprising the following steps:

[0088] According to the first preset requirement, the laser output frequencies of all microcavity lasers 110 are set by adjusting the components;

[0089] The microcavity laser 110 outputs a first laser based on the setting of the adjustment component;

[0090] The optical waveguide unit 310 receives the corresponding first laser and outputs it as a second laser;

[0091] The phased array unit 210 receives the corresponding second laser and outputs a third laser in a preset laser emission direction.

[0092] By setting the laser output frequency of the microcavity laser 110 , the output third laser can be emitted in a preset direction, and the adjustment is convenient and simple.

[0093] It should be noted that there is no strict sequence for the above steps, and the sequence can be adjusted to meet actual operational needs.

[0094] like Figure 5 The embodiment shown, before the phased array unit 210 receives the corresponding second laser and outputs the third laser in a preset laser emission direction, also includes: a second regulator adjusts the phase of the phased array unit 210 so that the laser output phase angle of the phased array unit 210 is a preset laser output phase angle.

[0095] In actual operation, since it is more convenient to set the laser output frequency of the microcavity laser 110 first, it is preferred to set the laser output frequency of the microcavity laser 110 first, and then set (such as when the phased array unit 210 itself can be modulated) or adjust the laser output phase angle of the phased array unit 210 through a second regulator to meet actual needs.

[0096] It should be noted that the adjustment component may set the laser output frequency of the microcavity laser 110 by using a first adjuster, or the microcavity laser 110 itself may adjust the laser output frequency, which will not be described in detail here.

[0097] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A laser emission system, characterized in that: include: A laser assembly, wherein the laser assembly comprises a microcavity laser, wherein a plurality of the microcavity lasers are provided and the plurality of microcavity lasers are arranged in a row; A phased array component, the phased array component comprising a phased array unit, a plurality of the phased array units are provided and correspond one to one with the microcavity lasers; An optical waveguide component, the optical waveguide component comprises an optical waveguide unit, a plurality of the optical waveguide units are provided, the optical waveguide units are arranged between the microcavity laser and the phased array unit, and one optical waveguide unit corresponds to one microcavity laser and one phased array unit; and An adjusting component, the adjusting component is used to adjust the output of the laser component; wherein, according to the first preset requirement, the laser output frequencies of all the microcavity lasers are set by the adjustment component; The microcavity laser outputs a first laser based on the setting of the adjustment component; The optical waveguide unit receives the corresponding first laser and outputs it as a second laser; The phased array unit receives the corresponding second laser and outputs a third laser in a preset laser emission direction.

2. The laser emission system according to claim 1, characterized in that: The regulating component comprises a first regulator, which is connected to the microcavity laser and is used to regulate the laser output frequency of the microcavity laser.

3. The laser emission system according to claim 1, characterized in that: The adjustment component includes a second adjuster, which is connected to the phased array unit and is used to adjust the laser output phase angle of the phased array unit.

4. The laser emission system according to claim 1, characterized in that: The microcavity laser is provided with a pump source, and the laser emission system further comprises a pump driver, and the pump driver is used to drive the pump source.

5. The laser emitting system according to claim 1, characterized in that: It also includes an integrated substrate, and the laser component, the phased array component, the optical waveguide component and the adjustment component are all arranged on the integrated substrate.

6. The laser emitting system according to claim 1, characterized in that: The microcavity lasers are arranged in rows transversely, and the phased array units are arranged in rows transversely and corresponding to the microcavity lasers; Or the microcavity lasers are arranged in rows vertically, and the phased array units are arranged in rows vertically and corresponding to the microcavity lasers.

7. The laser emission system according to any one of claims 1 to 6, characterized in that: The microcavity laser is a microdisk laser or a vertical cavity surface emitting laser; or the optical waveguide unit is an integrated optical waveguide or a cylindrical optical waveguide.

8. The laser emitting system according to claim 3, characterized in that: Before the phased array unit receives the corresponding second laser and outputs a third laser in a preset laser emission direction, the method further includes: The second regulator adjusts the phase of the phased array unit so that the laser output phase angle of the phased array unit is a preset laser output phase angle.

9. A laser radar, characterized in that: It comprises a laser emission system as described in any one of claims 1 to 8, and the laser emission system is used for laser emission of the laser radar.

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