CN218896928U

CN218896928U - Multi-optical-path TO packaging coupling structure

Info

Publication number: CN218896928U
Application number: CN202223516600.2U
Authority: CN
Inventors: 单肖楠; 王德林; 叶淑娟
Original assignee: Yangzhou Yangxin Laser Technology Co ltd
Current assignee: Yangzhou Yangxin Laser Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-21
Anticipated expiration: 2032-12-28

Abstract

The utility model provides a multi-light path TO encapsulation coupling structure relates TO semiconductor laser technology field, has solved radiating effect relatively poor, dress transfers inefficiency and ultraviolet glue solidification leads TO the facula of collimating mirror TO warp the problem, and coupling structure includes first speculum, second speculum, beam combining mirror, focusing mirror, optic fibre and a plurality of laser components, every laser component corresponds a first speculum or a second speculum, and first speculum and second speculum all correspond beam combining mirror setting, and beam combining mirror, focusing mirror, optic fibre are along same optical axis setting in order; the laser assembly comprises a base provided with a mounting hole, the TO laser and the locking screw are both arranged in the mounting hole, the locking screw is in contact with a heat dissipation plate of the TO laser, the inner surface of the locking screw is in threaded connection with an adjusting screw, and a fast and slow axis collimating mirror is arranged in the adjusting screw corresponding TO the luminous point of the TO laser. The utility model has good heat dissipation effect, improves the adjustment efficiency, and reduces the influence of glue deformation on the light spots of the collimating lens.

Description

Multi-optical-path TO packaging coupling structure

Technical Field

The utility model relates TO the technical field of semiconductor lasers, in particular TO a multi-optical path TO packaging coupling structure.

Background

TO packages, i.e., coaxial packages, are used in the packaging of semiconductor lasers because of their low cost, simplicity of packaging, and the like. The matching between the TO laser and the base in the current market generally adopts bonding, namely, heat conduction glue is used for being matched with screws for fastening, or welding of tube shells is carried out by adopting solder such as tin indium copper, and the like, and the matching methods can lead TO large thermal resistance between the TO laser and the base (bank seat), and the existing mode is TO radiate heat through the rear end face of a heat radiation plate of the TO laser and the base, so that the heat radiation effect is poor, and further the stability and the service life of the semiconductor laser are influenced. The fast and slow axis collimating mirror of the existing TO laser is assembled and adjusted by adopting six-axis adjusting frames and other devices, ultraviolet glue is used for fixing after the assembly and adjustment, the assembly and adjustment efficiency is low, and light spots of the collimating mirror are deformed due TO shrinkage of the glue when the ultraviolet glue is cured.

Disclosure of Invention

The utility model provides a multi-optical path TO packaging coupling structure, which aims TO solve the problems of poor radiating effect, low mounting and adjusting efficiency and large light spot deformation of a collimating mirror caused by ultraviolet glue curing in the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the multi-light path TO packaging coupling structure comprises a first reflecting mirror, a second reflecting mirror, a beam combining mirror, a focusing mirror, an optical fiber and a plurality of laser components, wherein each laser component corresponds TO one first reflecting mirror or one second reflecting mirror, the first reflecting mirror and the second reflecting mirror are arranged corresponding TO the beam combining mirror, and the beam combining mirror, the focusing mirror and the optical fiber are sequentially arranged along the same optical axis;

the laser assembly comprises a base provided with a mounting hole, the TO laser and the locking screw are both arranged in the mounting hole, the locking screw is in contact with a heat dissipation plate of the TO laser, the inner surface of the locking screw is in threaded connection with an adjusting screw, and a fast and slow axis collimating lens is arranged in the adjusting screw corresponding TO the luminous point of the TO laser.

Further, a first screwing notch is formed in the end face, far away from the TO laser, of the locking screw, and a second screwing notch is formed in the end face, far away from the TO laser, of the adjusting screw.

Further, the locking spiral ring is used for pressing and fixing a heat dissipation plate of the TO laser.

Furthermore, the locking screw ring is made of metal.

Further, a first internal thread is arranged on the side wall of the mounting hole, a first external thread is arranged on the outer surface of the locking screw, and the locking screw is mounted in the mounting hole on the base through the first internal thread and the first external thread.

Further, a second boss is arranged in the mounting hole, the TO laser is located between the second boss and the locking spiral ring, and a heat dissipation plate of the TO laser is fixed through the second boss and the locking spiral ring.

Further, a first boss is arranged on the inner surface of the adjusting screw ring, and the fast and slow axis collimating mirror is adhered to the first boss.

Further, the TO laser is welded on the base.

Further, the locking screw ring is contacted with the front surface of the TO laser radiating plate, and the base is contacted with the rear surface of the TO laser radiating plate.

Further, the coupling structure further comprises a third reflector, and the third reflector is arranged corresponding to the first reflector and the beam combining mirror and can reflect the light beam reflected by the first reflector to the beam combining mirror.

The beneficial effects of the utility model are as follows:

1. according TO the multi-light-path TO packaging coupling structure, the front end face of the TO laser is radiated in a mode that the locking spiral ring is in contact with the TO laser radiating plate, so that the radiating area is increased, and the radiating effect is good.

2. The adjusting screw ring is locked in the locking screw ring, so that the position of the adjusting screw ring can be adjusted by adopting threads according TO the light spots of the collimation light of the TO laser, the adjustment of the fast and slow axis collimating mirror is realized, the time for adjusting the fast and slow axis collimating mirror by six-axis equipment is reduced, and the adjustment efficiency is improved.

3. By adopting the mode of screw thread adjusting the lens, the effect of glue deformation on the light spot of the collimating lens can be reduced as the fast and slow axis collimating lens is fixed in the adjusting screw ring and then the screw thread adjusting position is adopted.

Drawings

Fig. 1 is a schematic diagram of a multi-optical path TO package coupling structure and an optical path of the present utility model.

Fig. 2 is an exploded view of a multi-optical path TO package coupling structure according TO the present utility model.

Fig. 3 is a partial structural cross-sectional view of a multi-path TO package coupling structure laser assembly of the present utility model taken along fig. 1D-D.

In the figure: 1. the laser comprises a main base, 2, a first reflector, 3, a second reflector, 4, a third reflector, 5, a beam combining mirror, 6, a focusing mirror, 7, optical fibers, 8, a first internal thread, 9, a locking screw, 10, a first external thread, 11, an adjusting screw, 12, a second external thread, 13, a second boss, 14, a fast and slow axis collimating mirror, 15, a lens seat, 16, a TO laser, 17, a heat dissipation plate, 18, a luminescent crystal, 19, a circuit board, 20 and a second internal thread.

Detailed Description

The utility model will be described in further detail with reference to the drawings and examples.

A multi-optical path TO packaging coupling structure, as shown in fig. 1 and 2, comprises a first reflecting mirror 2, a second reflecting mirror 3, a beam combining mirror 5, a focusing mirror 6, an optical fiber 7 and a plurality of laser components, wherein each laser component corresponds TO one first reflecting mirror 2 or one second reflecting mirror 3, the first reflecting mirror 2 and the second reflecting mirror 3 are respectively arranged corresponding TO the beam combining mirror 5, and the beam combining mirror 5, the focusing mirror 6 and the optical fiber 7 are sequentially arranged along the same optical axis;

the laser assembly comprises a base provided with a mounting hole, the TO laser 16 and the locking screw 9 are both arranged in the mounting hole, the locking screw 9 is in contact with a heat dissipation plate 17 of the TO laser 16, the inner surface of the locking screw 9 is in threaded connection with an adjusting screw 11, and a speed shaft collimating lens 14 is arranged in the adjusting screw 11 corresponding TO the luminous point of the TO laser 16.

Specifically, a part of the laser components corresponds to the first mirror 2, another part of the laser components corresponds to the second mirror 3, and the number of the laser components is equal to the sum of the numbers of the first mirror 2 and the second mirror 3.

The first mirror 2 and the second mirror 3 are both disposed corresponding to the beam combining mirror 5, and as an embodiment, the first mirror 2 is disposed corresponding to the transmission surface of the beam combining mirror 5, and the second mirror 3 is disposed corresponding to the reflection surface of the beam combining mirror 5. The beam combining mirror 5 is capable of combining the light beam reflected thereto by the first reflecting mirror 2 and the light beam reflected thereto by the second reflecting mirror 3. The beam combining lens 5, the focusing lens 6 and the optical fiber 7 are sequentially arranged along the same optical axis from left to right, the beam combining lens 5 is arranged corresponding to the focusing lens 6, and the focusing lens 6 is arranged corresponding to the optical fiber 7. The focusing mirror 6 is located on the lens holder 15.

The light path is as follows: the light beams emitted by part of the laser components are reflected by the first reflecting mirror 2 and then are incident on the transmission surface of the beam combining mirror 5, the light beams emitted by the other part of the laser components are reflected by the second reflecting mirror 3 and then are incident on the reflection surface of the beam combining mirror 5, the light beams incident on the beam combining mirror 5 are irradiated on the focusing mirror 6 after being combined by the beam combining mirror 5, and the light beams enter the optical fiber 7 after being focused by the focusing mirror 6.

The laser assembly comprises a base, and the bases of a plurality of laser assemblies can be separated or integrated, and the base of a plurality of laser assemblies is called a total base 1. The way of the overall base 1 ensures the uniformity of the linearity of the coupling structure. A multi-optical path TO package coupling structure may have two total susceptors 1, referred TO herein as a first total susceptors 1 and a second total susceptors 1. All laser components located in the first total base 1 are arranged corresponding to the first reflecting mirrors 2, and the number of the first reflecting mirrors 2 is the same as that of all laser components in the first total base 1 and is arranged in a one-to-one correspondence. All laser components located in the second total base 1 are arranged corresponding to the second reflecting mirrors 3, and the number of the second reflecting mirrors 3 is the same as the number of all laser components in the second total base 1 and are arranged in a one-to-one correspondence. The structure illustrated in fig. 1 only has one total base 1, and the multi-optical path TO package coupling structure further includes a third mirror 4, where the third mirror 4 is disposed corresponding TO the first mirrors 2 and also is disposed corresponding TO the beam combining mirrors 5, and the third mirror 4 is configured TO reflect all the light beams reflected by the first mirrors 2 onto the beam combining mirrors 5, and as an example, the number of the first mirrors 2 is 2, and the number of the second mirrors 3 is 4. In addition, the laser component adopts a horizontally placed structure, and the damage to human eyes during dimming can be reduced by horizontal light emission.

The laser assembly is structured as shown in fig. 2 and 3, and includes a base (not shown in fig. 3), a TO laser 16, a lock screw 9, an adjusting screw 11, and a fast and slow axis collimator lens 14.

The base is internally provided with a laser installation position and an installation position of the locking screw 9, the laser installation position and the installation position of the locking screw 9 are correspondingly arranged, the TO laser 16 is installed at the laser installation position, the locking screw 9 is installed at the installation position of the locking screw 9, and the locking screw 9 can be used for fixedly installing the TO laser 16 on the base.

In other words, the mounting hole is formed on the base, and the mounting hole includes a TO laser 16 mounting area and a locking coil 9 mounting area, the TO laser 16 mounting area and the locking coil 9 mounting area are disposed in front of each other, and the light emitting direction of the TO laser 16 is the front, that is, the right side in fig. 1. The TO laser 16 mounting area communicates with the lock coil 9 mounting area TO ensure laser light transmission. The TO laser 16 is installed in the TO laser 16 installation area, specifically, the TO laser 16 installation area in the installation hole is provided with a second boss 13, usually a second annular boss, used as the back limit of the heat dissipation plate 17 of the TO laser 16, the locking screw 9 is used as the front limit of the heat dissipation plate 17 of the TO laser 16, the locking screw 9 is connected with the heat dissipation plate 17 of the TO laser 16, so that the heat dissipation plate 17 can be pressed, preferably, the TO laser 16 can be fixed through the locking screw 9 and the second boss 13, and the heat dissipation plate 17 of the TO laser 16 is clamped between the locking screw 9 and the second boss 13. The light emitting crystal 18 of the TO laser 16 is located in the lock screw 9. The installation area of the locking screw 9 is as follows: the hole side wall of the mounting hole is provided with a first internal thread 8, the outer surface of the locking screw ring 9 is provided with a first external thread 10, the locking screw ring 9 is locked and attached on the base through the first internal thread 8 on the mounting hole and tightly presses the heat dissipation plate 17 of the TO laser 16 through the first internal thread 8 and the first external thread 10, and uneven packaging is reduced. The heat spreader plate 17 of the TO laser 16 is the mounting plate for the light emitting crystal 18 (i.e., cap) of the TO laser 16, as known TO those skilled in the art.

The inner surface of the locking screw ring 9 is provided with a second internal thread 20, the outer surface of the adjusting screw ring 11 is provided with a second external thread 12, the adjusting screw ring 11 is connected with the locking screw ring 9 through the second external thread 12 and the second internal thread 20, and the adjusting screw ring 11 can move relative to the locking screw ring 9 through rotating the adjusting screw ring 11. The inner surface of the adjusting screw 11 is provided with a first boss, which is used as a mounting position of the fast and slow axis collimating mirror 14 and is adhered to the first boss in a gluing manner, so that stable mounting of the fast and slow axis collimating mirror 14 is ensured, and the first boss is a first annular boss. The fast and slow axis collimator 14 corresponds TO the light emitting crystal 18 of the TO laser 16, and the light emitting point of the TO laser 16 corresponds TO the optical axis of the fast and slow axis collimator 14.

The end face of the locking screw ring 9 far away from the TO laser 16 is provided with a first screwing notch. The locking screw 9 is made of metal. The end face of the adjusting screw 11 far away from the TO laser 16 is provided with a second screwing notch.

Further, the TO laser 16 mounting area includes a circuit board 19 mounting area, i.e., a circuit board 19 is mounted on the rear side of the base, the electrode pins of the TO laser 16 pass through the circuit board 19, and the electrode pins of the TO laser 16 are soldered TO the circuit board 19 using solder.

Two through holes are arranged at two ends of the base or the main base 1 and are used for fixing the base or the main base 1 on a working table surface.

According TO the multi-light-path TO packaging coupling structure, the locking spiral ring 9 is used for radiating the front end face of the TO laser 16 in a mode of contacting the radiating plate 17 of the TO laser 16, so that the radiating area is increased, compared with the existing radiating mode, the front end face radiating is increased, the heat of the TO laser 16 is efficiently and quickly radiated, and the stability and the service life of a semiconductor laser are improved. The adjusting screw ring 11 is locked in the locking screw ring 9, the position of the adjusting screw ring 11 is adjusted according TO the light spot of the collimation light of the TO laser 16, the adjusting screw ring 11 is fixed by using glue after the position is adjusted, the collimation is removed by adopting a mode of adjusting a lens by threads, the time for installing and adjusting a collimating lens by six-axis equipment is reduced, the efficiency is improved, and the method is suitable for the TO lasers 16 with different wavelengths; and the mode of adjusting the lens by adopting threads is adopted, and the effect of glue deformation on the light spots of the collimating lens can be reduced because the fast and slow axis collimating lens 14 is fixed in the adjusting screw ring 11 and then the position is adjusted by threads.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. The multi-optical path TO packaging coupling structure is characterized by comprising a first reflecting mirror (2), a second reflecting mirror (3), a beam combining mirror (5), a focusing mirror (6), an optical fiber (7) and a plurality of laser components, wherein each laser component corresponds TO one first reflecting mirror (2) or one second reflecting mirror (3), the first reflecting mirror (2) and the second reflecting mirror (3) are arranged corresponding TO the beam combining mirror (5), and the beam combining mirror (5), the focusing mirror (6) and the optical fiber (7) are sequentially arranged along the same optical axis;

the laser assembly comprises a base provided with a mounting hole, the TO laser (16) and the locking screw (9) are both arranged in the mounting hole, the locking screw (9) is in contact with a heat dissipation plate (17) of the TO laser (16), the inner surface of the locking screw (9) is in threaded connection with an adjusting screw (11), and a fast and slow axis collimating mirror (14) is arranged in the adjusting screw (11) corresponding TO the luminous point of the TO laser (16).

2. The multi-optical path TO package coupling structure according TO claim 1, wherein a first screwing notch is formed on an end surface of the locking screw ring (9) far away from the TO laser (16), and a second screwing notch is formed on an end surface of the adjusting screw ring (11) far away from the TO laser (16).

3. A multi-optical path TO package coupling structure according TO claim 1, wherein the locking screw (9) is used for pressing and fixing a heat dissipation plate (17) of the TO laser (16).

4. The multi-optical path TO package coupling structure according TO claim 1, wherein the locking coil (9) is made of metal.

5. The multi-optical path TO package coupling structure according TO claim 1, wherein a first internal thread (8) is provided on a hole side wall of the mounting hole, a first external thread (10) is provided on an outer surface of the locking screw (9), and the locking screw (9) is mounted in the mounting hole on the base through the first internal thread (8) and the first external thread (10).

6. The multi-optical path TO package coupling structure according TO claim 1, wherein a second boss (13) is disposed in the mounting hole, the TO laser (16) is located between the second boss (13) and the locking coil (9), and a heat dissipation plate (17) of the TO laser (16) is fixed by the second boss (13) and the locking coil (9).

7. The multi-optical path TO package coupling structure according TO claim 1, wherein the inner surface of the adjusting screw (11) is provided with a first boss, and the fast and slow axis collimating mirror (14) is adhered TO the first boss.

8. A multiple optical path TO package coupling structure as in claim 1, wherein said TO laser (16) is soldered TO the submount.

9. A multi-optical path TO package coupling structure according TO claim 1, wherein the lock screw (9) contacts a front surface of a heat dissipating plate (17) of the TO laser (16), and the base contacts a rear surface of the heat dissipating plate (17) of the TO laser (16).

10. The multi-optical path TO package coupling structure according TO claim 1, further comprising a third reflecting mirror (4), wherein the third reflecting mirror (4) is disposed corresponding TO the first reflecting mirror (2) and the beam combining mirror (5), and is capable of reflecting the light beam reflected by the first reflecting mirror (2) onto the beam combining mirror (5).