Ultrafast pulse seed source equipment

Abstract

The utility model relates to the technical field of ultrafast pulse seed sources, and discloses ultrafast pulse seed source equipment, which comprises an upper cover and a bottom shell which are assembled up and down, an optical fiber disc and a compact optical module are assembled in the bottom shell and the upper cover, a mounting plate is assembled between the upper cover and the bottom shell, an optical fiber mounting groove and an optical module mounting groove which are parallel in a high-low step mode are designed in the mounting plate, and the optical fiber disc and the compact optical module are installed in the optical fiber mounting groove and the optical module mounting groove respectively; a bottom circuit board is mounted on the upper plate surface of the bottom shell at a position opposite to the optical module mounting groove; and the lower part of the upper cover is provided with an upper circuit board. According to the device, the bottom shell, the pumping driving plate and the upper cover are arranged, so that an electro-optic-electro module achieves sandwich structure layout, the overall structure is compact, and meanwhile due to the design of the upper structure and the lower structure of the circuit board, the maintenance and replacement cost is lower when problems occur.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrafast pulse seed sources, in particular to ultrafast pulse seed source equipment. Background Art

[0002] An ultrafast pulse seed source is a device that generates ultrashort pulses. Ultrashort pulses usually have a time scale of nanoseconds (10^-9 seconds) or femtoseconds (10^-15 seconds), as well as high energy and high peak power. These pulses are often used in research and application fields such as optical communications, material processing, ultrafast dynamics, etc. Ultrafast pulse seed sources usually consist of a laser and a pulse former. The laser is responsible for generating a continuous laser beam, while the mode-locked pulse former is used to convert the continuous laser beam into ultrashort pulses. The mode-locked pulse former can use some technologies, such as SESAM, NALM, NPR, etc., to achieve the generation of ultrafast pulses. Ultrafast pulse seed sources have important applications in many fields. For example, in fiber-optic communications, ultrashort pulses can be used for high-speed data transmission and signal enhancement in fiber-optic communication systems. In material processing, ultrafast pulses can generate high energy density for micromachining and surface modification. In ultrafast dynamics research, ultrashort pulses can be used to observe and control the dynamic processes of electrons and atoms in matter.

[0003] Currently, most ultrafast seed sources are made of optoelectronic separation modules, with an electrical module at the bottom and an optical module at the top. Since the electrical module includes a pump drive module, a frequency acquisition module, a temperature detection module, etc., the bottom area is large, and the size is generally 200*120mm, with a thickness of 40mm, resulting in a problem of large overall volume.

[0004] At present, optical modules generally need to have transmission structures such as worm gears and turbines, so their overall volume is increased and they need to have a primary thickness. This also makes the overall volume of ultrafast pulse seed source equipment larger and heat dissipation is often difficult to meet requirements. Utility Model Content

[0005] (I) Technical problems solved: In view of the shortcomings of the existing technology, the utility model provides an ultrafast pulse seed source device, which adopts a bottom electric module (pump drive), a middle optical module, and an upper cover plate containing an electric module (frequency acquisition module, temperature detection module, etc.), and adopts an electric-optical-electrical sandwich structure, which greatly reduces the bottom area to 100*95mm and a thickness of 40mm. In such a small volume, the intelligent and stable mode locking of the ultrafast seed source is realized, which provides a prerequisite for the miniaturization of ultrafast lasers and solves the problem that most ultrafast seed sources are currently made of photoelectric separation modules, with an electric module at the bottom and an optical module at the top. Since the electric module includes a pump drive module, a frequency acquisition module, a temperature detection module, etc., the bottom area is large, and the size is generally 120*200mm, and the thickness is 40mm, resulting in a large overall volume.

[0006] (II) Technical solution: To achieve the above-mentioned purpose, the utility model provides the following technical solution: an ultrafast pulse seed source device, which comprises an upper cover and a bottom shell assembled up and down; an optical fiber disc and a compact optical module are assembled inside the bottom shell and the upper cover; a mounting plate is assembled between the upper cover and the bottom shell, and the mounting plate is designed with optical fiber disc mounting grooves and optical module mounting grooves arranged in parallel with high and low steps, and the optical fiber disc and compact optical module are respectively mounted in the optical fiber disc mounting groove and the optical module mounting groove; a bottom circuit board is mounted on the upper plate surface of the bottom shell facing the optical module mounting groove; an upper circuit board is mounted on the lower part of the upper cover.

[0007] Preferably, the upper cover and the bottom shell are square trough bodies that are buckled up and down, and a pump drive board mounting hole for assembling the mounting plate is designed in the trough body of the bottom shell near the vertical side wall, and a low step for assembling the bottom circuit board is designed at the lower position of the bottom shell facing the optical fiber disk mounting groove, and the low step is processed with mounting holes corresponding to the assembly plate.

[0008] Preferably, a pump and a pump driving plate mounting base is disposed on the inner wall of the bottom shell, and a pump is disposed above the pump and the pump driving plate mounting base.

[0009] Preferably, the bottom shell includes a pump drive, and the pump drive is an integrated micro pump drive module, and the pump drive adopts a high-stability ACC control circuit.

[0010] Preferably, the pump arranged above the mounting hole of the pump driving plate is a 10pin pump.

[0011] Preferably, a fiber optic coiling module is disposed inside the fiber optic disc installation groove, and the fiber optic coiling module adopts an S-shaped fiber winding method to achieve the gathering and arrangement of single-sided optical fibers.

[0012] Preferably, the compact optical module adopts a 1+2 compact optical coupling bonding process and integrates a micro-motor polarization control module to achieve control of the polarization state in the optical path.

[0013] Preferably, the upper cover includes an electric module frequency stabilization circuit board, and the electric module frequency stabilization circuit board includes a frequency acquisition module, a motor control module, and a temperature detection module.

[0014] Preferably, the frequency acquisition module and the motor control module realize closed-loop linkage, and the temperature detection module detects the temperature inside the shell in real time, and gives a signal light prompt when the temperature is greater than the set working temperature range.

[0015] Preferably, the device has a length less than 110 mm, a width less than 100 mm, and a height less than 50 mm.

[0016] Preferably, the overall size of the device is 100*95*40mm.

[0017] (III) Beneficial effects: Compared with the prior art, the utility model provides an ultrafast pulse seed source device with the following beneficial effects:

[0018] 1. The ultrafast pulse seed source equipment adopts an electro-optical-electrical sandwich structure by setting a bottom shell, a pump drive board and an upper cover, in which a thicker compact optical module is assembled in a deeper optical module installation slot, and different circuit board modules are designed at the upper and lower positions of the thinner optical fiber disk, so that the overall structure is relatively compact, and the volume can be reduced to 100*95*40mm or even less. At the same time, the intelligent and stable locking of the ultrafast seed source is realized in such a small volume, which provides a prerequisite for the miniaturization of ultrafast lasers. At the same time, the design of the upper and lower structures of the circuit board makes the heating elements on the circuit board dispersed, which improves the heat dissipation effect. At the same time, when there is a problem with the circuit, it is more convenient to troubleshoot, and the cost of maintenance and replacement is also lower.

[0019] 2. The ultrafast pulse seed source device divides the electrical module into two by setting the mounting plate in the middle, and only retains the pump driving function at the bottom, so that it can fully contact with the external water cooling plate, stabilize the pump working temperature, and make its output power more stable.

[0020] 3. The ultrafast pulse seed source device further reduces the size of the optical module by using 1+2 compact optical modules.

[0021] 4. The ultrafast pulse seed source device is equipped with an electrical module (including a frequency acquisition module, a motor control module, a temperature detection module, etc.) through the upper cover, so as to perform frequency stability control through the built-in intelligent mode locking algorithm. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the bottom shell structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the compact optical module of the utility model;

[0026] Figure 5 It is a schematic diagram of the upper cover structure of the utility model.

[0027] The numbers in the figure are:

[0028] 1. Bottom shell; 11. Pump driver board mounting hole; 12. Pump and pump driver board mounting plate; 13. Power indicator light; 14. Power interface; 2. Mounting plate; 21. Fiber optic disc mounting slot; 22. Optical path integrated module mounting slot; 3. Compact optical module; 4. Upper cover; 5. Fiber optic disc. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-5An ultrafast pulse seed source device, comprising an upper cover 4 and a bottom shell 1 assembled from top to bottom; an optical fiber disc 5 and a compact optical module 3 are assembled inside the bottom shell 1 and the upper cover 4; a mounting plate 2 is assembled between the upper cover 4 and the bottom shell 1; the mounting plate 2 is designed with optical fiber disc mounting grooves 21 and optical module mounting grooves 22 arranged in parallel with high and low steps; the optical fiber disc mounting grooves 21 and optical module mounting grooves 22 are respectively mounted with the optical fiber disc 5 and the compact optical module 3; a bottom circuit board is mounted on the upper plate surface of the bottom shell 1 facing the optical module mounting grooves 22; An upper circuit board is installed at the lower part of the upper cover 4. The upper cover 4 and the bottom shell 1 are square troughs that are buckled up and down. A pump drive board mounting hole 11 for mounting the mounting board 2 is designed in the trough body of the bottom shell 1 near the vertical side wall. A low step for mounting the bottom circuit board is designed at the lower position of the bottom shell 1 facing the optical fiber disk mounting groove 21. The low step is processed with mounting holes corresponding to the mounting panels. A pump and pump drive board mounting base 12 is provided on the inner wall of the bottom shell 1, and a pump is provided above the pump and pump drive board mounting base 12.

[0031] See also Figure 3 The bottom shell 1 includes a pump drive, which is an integrated micro pump drive module. The pump drive adopts a high-stability ACC control circuit and fully considers the design of pump temperature control and heat dissipation in the mechanical design. The pump arranged above the pump drive board mounting hole 11 is a 10pin pump.

[0032] See also Figure 4 A fiber winding module is arranged inside the fiber tray installation groove 21. The fiber winding module adopts an S-shaped fiber winding method to realize the collection and arrangement of single-sided optical fibers. The compact optical module 3 adopts a 1+2 compact optical coupling bonding process and integrates a micro-motor polarization control module to realize the control of the polarization state in the optical path.

[0033] See also Figure 5 The upper cover 4 includes an electric module frequency stabilization circuit board. The electric module frequency stabilization circuit board includes a frequency acquisition module, a motor control module, a temperature detection module, etc. The frequency acquisition module and the motor control module realize closed-loop linkage. When the frequency change fluctuation range exceeds the set value, the motor works according to the program set by the algorithm, and corrects the frequency to the set value to realize real-time intelligent frequency locking. The temperature detection module detects the temperature inside the shell in real time. When the temperature is greater than the set working temperature range, a signal light prompt is given.

[0034] See also Figure 1 Through reasonable layout, in this embodiment, under normal power conditions, the overall size of the device can be 100*95*40mm, or even smaller than this size.

[0035] Working principle: This device installs a pump and a pump driver in the bottom shell 1. The pump driver is an integrated micro pump driver module. The pump driver adopts a high-stability ACC control circuit, and the mechanical design fully considers the design of pump temperature control and heat dissipation. The pump arranged above the pump driver board mounting hole 11 is a 10pin pump. A fiber winding module and a compact optical module 3 are arranged above the mounting plate 2. The fiber winding module adopts an S-shaped fiber winding method to realize the collection and arrangement of single-sided optical fibers. The compact optical module 3 adopts a 1+2 compact optical coupling bonding process and integrates a micro-motor polarization control module to realize the control of the polarization state in the optical path. The upper cover is provided with an electric module frequency stabilization circuit board, which includes a frequency acquisition module, a motor control module, a temperature detection module, etc. The frequency acquisition module and the motor control module realize closed-loop linkage. When the frequency change fluctuation range exceeds the set value, the motor works according to the program set by the algorithm to correct the frequency to the set value to realize real-time intelligent frequency locking. The temperature detection module detects the temperature in the shell in real time. When the temperature is greater than the set working temperature range, a signal light prompt is given. Thus, an electric-optical-electrical sandwich structure is achieved, which greatly reduces the volume to 100*95*40mm. In such a small volume, the intelligent and stable mode locking of the ultrafast seed source is realized, which provides a prerequisite for the miniaturization of ultrafast lasers. The electrical module is divided into two parts, and only the pump driving function is retained at the bottom, so that it is in full contact with the external water-cooled plate to stabilize the pump operating temperature and make its output power more stable. A compact hybrid optical module is used in the middle to further reduce the volume of the optical module. The upper cover contains the electrical module (including frequency acquisition module, motor control module, temperature detection module, etc.), with a built-in intelligent mode locking algorithm for frequency stability control.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrafast pulse seed source device, comprising an upper cover (4) and a bottom shell (1) assembled from top to bottom; an optical fiber disk (5) and a compact optical module (3) are assembled inside the bottom shell (1) and the upper cover (4), characterized in that: A mounting plate (2) is mounted between the upper cover (4) and the bottom shell (1); the mounting plate (2) is provided with optical fiber tray mounting grooves (21) and optical module mounting grooves (22) arranged in parallel with high and low steps; the optical fiber tray mounting grooves (21) and the optical module mounting grooves (22) are respectively mounted with the optical fiber tray (5) and the compact optical module (3); a bottom circuit board is mounted on the upper plate surface of the bottom shell (1) facing the optical module mounting grooves (22); and an upper circuit board is mounted on the lower part of the upper cover (4).

2. The ultrafast pulse seed source device according to claim 1, characterized in that: The upper cover (4) and the bottom shell (1) are square trough bodies that are buckled up and down. A pump drive board mounting hole (11) for mounting the mounting plate (2) is designed in the trough body of the bottom shell (1) at a position close to the vertical side wall. A low step for mounting a bottom circuit board is designed at a lower position of the bottom shell (1) facing the optical fiber disk mounting groove (21). The low step is processed with mounting holes corresponding to the mounting plate.

3. The ultrafast pulse seed source device according to claim 1, characterized in that: A pump and a pump drive plate mounting base (12) is arranged on the inner wall of the bottom shell (1), and a pump is arranged above the pump and the pump drive plate mounting base (12).

4. The ultrafast pulse seed source device according to claim 1, characterized in that: The bottom shell (1) comprises a pump drive, which is an integrated micro pump drive module. The pump drive adopts a high-stability ACC control circuit.

5. The ultrafast pulse seed source device according to claim 2, characterized in that: The pump arranged above the pump drive plate mounting hole (11) is a 10-pin pump.

6. The ultrafast pulse seed source device according to claim 1, characterized in that: An optical fiber coiling module is arranged inside the optical fiber coil installation groove (21), and the optical fiber coiling module adopts an S-shaped fiber winding method to achieve the gathering and arrangement of single-sided optical fibers.

7. The ultrafast pulse seed source device according to claim 1, characterized in that: The compact optical module (3) adopts a 1+2 compact optical coupling bonding process and integrates a micro-motor polarization control module to achieve control of the polarization state in the optical path.

8. The ultrafast pulse seed source device according to claim 1, characterized in that: The upper cover (4) comprises an electric module frequency stabilization circuit board, and the electric module frequency stabilization circuit board comprises a frequency acquisition module, a motor control module, and a temperature detection module.

9. The ultrafast pulse seed source device according to claim 8, characterized in that: The frequency acquisition module and the motor control module realize closed-loop linkage, and the temperature detection module detects the temperature inside the shell in real time. When the temperature is greater than the set working temperature range, a signal light prompt is given.

10. The ultrafast pulse seed source device according to claim 1, characterized in that: The device is less than 110mm in length, less than 100mm in width and less than 50mm in height.

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