CN215834885U - Laser based on crystal module - Google Patents
Laser based on crystal module Download PDFInfo
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- CN215834885U CN215834885U CN202023204358.6U CN202023204358U CN215834885U CN 215834885 U CN215834885 U CN 215834885U CN 202023204358 U CN202023204358 U CN 202023204358U CN 215834885 U CN215834885 U CN 215834885U
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Abstract
The utility model discloses a laser based on a crystal module, which sequentially comprises: the Laser Diode (LD) pump source, the shaping component and the crystal module; the crystal module includes: the laser gain medium, the passive Q-switched crystal and the output cavity mirror are sequentially arranged on the crystal module base along the emergent light direction of the LD pumping source.
Description
Technical Field
The utility model belongs to the technical field of solid laser, and particularly relates to a laser based on a crystal module.
Background
The conventional bonded crystal technology in the laser mostly adopts a flat cavity design, and has the advantages of simple structure, easiness in processing and poor heat dissipation performance.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a laser based on a crystal module.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a crystal module based laser comprising in order: the Laser Diode (LD) pump source, the shaping component and the crystal module;
the crystal module includes:
the laser gain medium is used for laser wavelength conversion and gain realization;
the passive Q-switching crystal is used for a saturable absorber for passive Q switching;
the output cavity mirror is used for outputting laser and forming a laser resonant cavity;
the crystal module base, the laser gain medium, the passive Q-switched crystal and the output cavity mirror are sequentially arranged on the crystal module base along the emergent light direction of the LD pumping source and are used for bearing and radiating.
On the basis of the technical scheme, the following improvements can be made:
preferably, the laser gain medium is erbium glass.
Preferably, the passively Q-switched crystal is a cobalt spinel crystal.
As a preferred scheme, the light incident side of the laser gain medium is plated with a signal light high reflection film and an LD pump light antireflection film, and the light exit side is plated with a signal light antireflection film.
Preferably, the light incident side and the light emergent side of the passive Q-switching crystal are both plated with a signal light antireflection film.
Preferably, the crystal module base is a metal base.
Preferably, an anti-reflection mirror is further arranged between the shaping component and the crystal module.
Preferably, the laser gain medium, the passive Q-switched crystal and the output cavity mirror are an integral module.
As a preferred scheme, the laser gain medium and the output cavity mirror form a complete laser resonant cavity.
Preferably, the passive Q-switched crystal is disposed in the laser cavity.
The laser based on the crystal module adopts a modular design, and the crystal module base is used as a heat dissipation element, so that the assembly convenience of the crystal module in use and the thermal performance of the module are improved, the requirements of different light-emitting energies on different cavity lengths are considered, and the working energy range and the working condition range of the laser are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a crystal module-based laser according to an embodiment of the present invention.
Fig. 2 is a second schematic structural diagram of a crystal module-based laser according to an embodiment of the present invention.
Wherein: the laser comprises a 1-LD pumping source, a 2-shaping component, a 3-crystal module, a 31-laser gain medium, a 32-passive Q-switched crystal, a 33-output cavity mirror, a 34-crystal module base and a 4-anti-reflection mirror.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The expression "comprising" an element is an "open" expression which merely means that there are corresponding parts, which should not be interpreted as excluding additional parts.
To achieve the object of the present invention, in some embodiments of a crystal module based laser, as shown in fig. 1, the laser comprises in sequence: an LD pumping source 1, a shaping component 2 and a crystal module 3;
the crystal module 3 includes:
a laser gain medium 31 for laser wavelength conversion and gain realization;
a passively Q-switched crystal 32 for a saturable absorber for passively Q-switched;
an output cavity mirror 33 for laser output and forming a laser resonator;
the crystal module base 34, the laser gain medium 31, the passive Q-switched crystal 32 and the output cavity mirror 33 are sequentially arranged on the crystal module base 34 along the emergent light direction of the LD pumping source 1, and are used for bearing and radiating.
The LD pump source 1 may be, but not limited to, an LD chip, other different kinds of semiconductor light sources, such as VCSEL, etc.
The shaping component 2 is designed according to the characteristics of the output light source of the LD pump source 1, and ensures that the rayleigh distance of the light spot acting on the laser gain medium 31 after the light emitted from the LD pump source 1 passes through the shaping component 2 covers the whole laser gain medium 31. The shaping component 2 can be, but is not limited to, a single lens, a lens assembly consisting of two or more lenses, or a fiber coupled into the lens assembly to complete shaping. The lens may be, but is not limited to, a circular lens or a cylindrical lens, and the lens group may be, but is not limited to, a circular lens group, a cylindrical lens group, or a combined lens group formed by a circular lens and a cylindrical lens.
The output cavity mirror 33 can be an output coupling mirror, and the output cavity mirror 33 can be designed into different cavity mirror forms such as a plane mirror or a concave mirror according to requirements. The output cavity mirror 33 can adopt different transmittances T according to different output energy requirements. In addition, according to different application scenes, the distance from the output cavity mirror 33 to the laser gain medium 31 can be freely designed, and the purpose of optimizing the cavity length is achieved.
The laser based on the crystal module adopts a modular design, and the crystal module base 34 is used as a heat dissipation element, so that the assembly convenience of the crystal module 3 in use and the thermal performance of the module are improved, the requirements of different light-emitting energies on different cavity lengths are considered, and the working energy range and the working condition range of the laser are improved.
Meanwhile, the utility model adopts a modular design, which can obviously reduce the development work difficulty of the laser, so that the laser is more advanced to low cost and practicability.
In order to further optimize the effect of the present invention, in other embodiments, the remaining features are the same, except that the laser gain medium 31 is erbium glass.
In order to further optimize the performance of the present invention, in other embodiments, the remaining features are the same, except that the passively Q-switched crystal 32 is a cobalt spinel crystal.
In order to further optimize the implementation effect of the present invention, in other embodiments, the remaining features are the same, except that the light incident side of the laser gain medium 31 is plated with a signal light high reflection film and an LD pump light antireflection film, and the light emergent side thereof is plated with a signal light antireflection film.
In order to further optimize the implementation effect of the present invention, in other embodiments, the other features are the same, except that the light incident side and the light emergent side of the passive Q-switching crystal 32 are both plated with a signal light antireflection film.
In order to further optimize the implementation of the present invention, in other embodiments, the rest features are the same, except that the crystal module base 34 is a metal base.
With the preferred embodiment, the crystal module base 34 is made of metal, which can provide stable thermal performance and perform better heat dissipation treatment on the crystal module.
In order to further optimize the implementation effect of the present invention, as shown in fig. 2, in other embodiments, the rest features are the same, except that an anti-reflection mirror 4 is further disposed between the shaping component 2 and the crystal module 3.
In order to further optimize the implementation effect of the present invention, in other embodiments, the rest features are the same, except that the laser gain medium 31, the passive Q-switched crystal 32 and the output cavity mirror 33 are an integral module.
With the preferred embodiment, the laser gain medium 31, the passive Q-switched crystal 32, and the output cavity mirror 33 are combined into an integral module, which can be integrally mounted for use.
In order to further optimize the effect of the present invention, in other embodiments, the remaining features are the same, except that the laser gain medium 31 and the output cavity mirror 33 form a complete laser resonator.
With the above preferred embodiment, the laser gain medium 31 and the output cavity mirror 33 form a complete laser resonator, which can be pumped by the LD to generate laser oscillation output.
In order to further optimize the performance of the present invention, in other embodiments, the remaining features are the same, except that a passively Q-switched crystal 32 is placed in the laser cavity.
With the preferred embodiment described above, the saturable absorber is placed in the laser cavity to accomplish the passive Q-switching process.
The various embodiments above may be implemented in cross-parallel.
The laser based on the crystal module expands the range of working conditions of the crystal module by utilizing the excellent thermal stability and heat dissipation of the metal base, and simultaneously can conveniently design different cavity lengths according to different application scenes so as to meet the requirements of different output energies and pulse widths. When the flat concave cavity is designed, the angular redundancy of module assembly and the overall stability of the laser are improved, so that the laser has the characteristics of compact structure, easiness in integration, wide output energy range, strong working condition adaptability and the like.
Compared with the existing laser, the utility model has the advantages that:
1) the utility model adopts the modular design of the crystal module, has simple structure, easy integration and controllable cost;
2) the crystal module base 34 with the heat dissipation effect is adopted, so that the heat dissipation performance of the whole device can be improved, and the working condition range of the whole device is expanded;
3) the output cavity mirror 33 adopted by the utility model can freely adjust the whole cavity length according to different application scenes, and the range of the output energy of the laser is improved.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (10)
1. A laser based on a crystal module, comprising in order: the Laser Diode (LD) pump source, the shaping component and the crystal module;
the crystal module includes:
the laser gain medium is used for laser wavelength conversion and gain realization;
the passive Q-switching crystal is used for a saturable absorber for passive Q switching;
the output cavity mirror is used for outputting laser and forming a laser resonant cavity;
and the laser gain medium, the passive Q-switched crystal and the output cavity mirror are sequentially arranged on the crystal module base along the emergent light direction of the LD pumping source and are used for bearing and radiating.
2. The laser of claim 1, wherein the laser gain medium is erbium glass.
3. The laser of claim 1, wherein the passively Q-switched crystal is a cobalt spinel crystal.
4. The laser of claim 1, wherein the light incident side of the laser gain medium is coated with a signal light high reflection film and a LD pump light reflection reducing film, and the light emergent side thereof is coated with a signal light reflection reducing film.
5. The laser of claim 1, wherein both the light-in side and the light-out side of the passively Q-switched crystal are coated with a signal light antireflection film.
6. The laser of claim 1, wherein the crystal module mount is a metal mount.
7. The laser of claim 1, wherein an anti-reflection mirror is further disposed between the shaping component and the crystal module.
8. The laser according to any of claims 1-7, wherein the laser gain medium, the passively Q-switched crystal, and the output cavity mirror are an integral module.
9. The laser of claim 8, wherein the laser gain medium and the output cavity mirror comprise a complete laser resonator.
10. The laser of claim 8, wherein the passively Q-switched crystal is disposed in the laser cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204358.6U CN215834885U (en) | 2020-12-25 | 2020-12-25 | Laser based on crystal module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204358.6U CN215834885U (en) | 2020-12-25 | 2020-12-25 | Laser based on crystal module |
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| CN215834885U true CN215834885U (en) | 2022-02-15 |
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| CN202023204358.6U Active CN215834885U (en) | 2020-12-25 | 2020-12-25 | Laser based on crystal module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667123A (en) * | 2023-07-31 | 2023-08-29 | 中国科学院长春光学精密机械与物理研究所 | Chip-level vertical integrated passive Q-switched laser with polarization output characteristic |
-
2020
- 2020-12-25 CN CN202023204358.6U patent/CN215834885U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667123A (en) * | 2023-07-31 | 2023-08-29 | 中国科学院长春光学精密机械与物理研究所 | Chip-level vertical integrated passive Q-switched laser with polarization output characteristic |
| CN116667123B (en) * | 2023-07-31 | 2023-09-22 | 中国科学院长春光学精密机械与物理研究所 | Chip-level vertical integrated passive Q-switched laser with polarization output characteristic |
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