CN116598870A - Laser assembly with disc gain medium structure - Google Patents

Laser assembly with disc gain medium structure Download PDF

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Publication number
CN116598870A
CN116598870A CN202310478380.9A CN202310478380A CN116598870A CN 116598870 A CN116598870 A CN 116598870A CN 202310478380 A CN202310478380 A CN 202310478380A CN 116598870 A CN116598870 A CN 116598870A
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CN
China
Prior art keywords
laser
disc
circular disc
mirror
lens
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Pending
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CN202310478380.9A
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Chinese (zh)
Inventor
陈艳中
雷泽成
瞿顺冬
郭学文
樊仲维
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Aerospace Information Research Institute of CAS
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Aerospace Information Research Institute of CAS
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Priority to CN202310478380.9A priority Critical patent/CN116598870A/en
Publication of CN116598870A publication Critical patent/CN116598870A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0057—Temporal shaping, e.g. pulse compression, frequency chirping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0071—Beam steering, e.g. whereby a mirror outside the cavity is present to change the beam direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06791—Fibre ring lasers

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

The invention discloses a laser component with a disc gain medium structure, which comprises an optical fiber coupling output semiconductor laser, a lens, a conical mirror, a lens, a circular disc and an output coupling mirror which are sequentially arranged, wherein a circle of conical surface is arranged on the side edge of the circular disc; after being collimated by a lens, pump light emitted by the optical fiber coupling output semiconductor laser is converted into an annular light beam by a conical mirror, the annular light beam is focused by the lens, the annular light beam is generated, the annular light beam is incident on the bottom surface of the circular disc, and is transmitted to the center along the radius of the circular disc after being reflected by the side conical surface of the circular disc, so that absorption pumping is realized. The bottom surface of the circular disc is plated with a laser high-reflection film, the high-reflection film and the output coupling mirror form a pair of cavity mirrors together, and laser forms oscillation under the pumping action through the pair of cavity mirrors and outputs laser. The optical fiber coupling output laser is converted into annular laser by adopting a simple conical mirror conversion technology, and is pumped along the side of the circular disc after being folded by approximately 90 degrees, so that the optical fiber coupling output laser has the advantages of simple pumping structure, convenience in debugging and maintenance and the like.

Description

Laser assembly with disc gain medium structure
Technical Field
The present invention relates to a solid state laser, and more particularly, to a laser assembly with a disk gain medium structure.
Background
The main configurations of the solid laser include a rod laser, a slab laser, a disc laser and an optical fiber laser, wherein the disc laser has a larger gain medium section/thickness ratio, can maintain excellent beam quality under high power load, can bear high peak power and high average power, and is widely applied to the fields of high-brightness continuous lasers and high peak power ultrashort pulse lasers.
The optical disk laser source can trace back to seventies of the last century, and has the potential of large energy output by virtue of the large caliber and large heat dissipation area.
Currently, disc lasers mainly have two technical schemes, one is a multi Cheng Bengpu disc laser technology, and the other is a side pump disc laser technology.
The multi-Cheng Bengpu disc laser enables pump light to pass through the pump gain medium for multiple times through complex pump light path design, and high-efficiency pumping is achieved. Because of the complex pump structure, accurate tuning techniques are required. This complex pumping structure also affects the robustness of the laser, which is generally resistant to shock and vibration.
In the prior art, the side-pumped disk laser technique includes:
two compact active mirror laser structures were proposed by the company boeing, j.vetrovec in 2002, and efficient pumping was achieved with a simple structure by side pumping discs 1-3 mm thick. The team developed side pumped discs of different materials (Yb: glass, yb: C-YAG and composite ceramic Sm/Nd: YAG) in 2012, performed performance tests and considered that the structure was suitable for thousands of watts of high power or-J-level high energy pulse and diffraction limited beam quality laser systems.
The contribution work of the side pump disc laser in the aspects of simplifying the pump light path, inhibiting ASE and the like provides a plurality of new ideas for technicians. However, such side-pumped lasers have obvious disadvantages, including limited pumping structures, limited number of laser diodes that can be arranged on the side, and limited pumping power; secondly, the arrangement of the pump diodes needs to be independently designed, and the pump diodes are complex in packaging and difficult to maintain. These disadvantages limit the application and development of side-pumped discs, especially in industry where cost and maintenance are critical.
The invention is provided for solving the problems of complex pumping structure, difficult assembly and adjustment, high maintenance cost, limited diode number, limited pumping power and the like in the traditional multi-path pumping disc laser in the prior art.
Disclosure of Invention
The present invention is directed to a laser device assembly with a disc gain medium structure, so as to solve the above technical problems in the prior art.
The invention aims at realizing the following technical scheme:
the laser component of the disk gain media structure of the present invention constitutes a laser oscillator or laser amplifier:
the laser oscillator comprises an optical fiber coupling output semiconductor laser 1, a lens 3, a conical mirror 4, a lens 5, a circular disc 7 and an output coupling mirror 8 which are sequentially arranged, wherein a circle of conical surface is arranged on the side edge of the circular disc 7;
the pump light 2 emitted by the optical fiber coupling output semiconductor laser 1 is collimated by the lens 3, then is converted into an annular light beam by the conical mirror 4, and is focused by the lens 5 to generate an annular light beam, the annular light beam is incident on the bottom surface of the circular disc 7, and is reflected by the side conical surface of the circular disc 7 and then is transmitted to the center along the radius of the circular disc 7, so that absorption pumping is realized; the laser amplifier comprises an optical fiber coupling output semiconductor laser 1, a lens 3, a conical mirror 4, a lens 5 and a circular disc 7, wherein a circle of conical surface is arranged on the side edge of the circular disc 7;
the laser amplifier is filled with laser 12, the laser 12 forms a certain angle with the lower surface of the round disc 7, and the laser 12 realizes power amplification after being reflected by the lower surface of the disc.
Compared with the prior art, the laser component with the disk gain medium structure provided by the invention adopts a simple conical mirror conversion technology to convert the optical fiber coupled output laser into annular laser, and the annular laser is pumped along the side of the circular disk after being folded by nearly 90 degrees, so that the laser component has the advantages of simple pumping structure, convenience in debugging and maintenance and the like.
Drawings
FIG. 1 is a schematic diagram of a side-pumped circular disk laser assembly according to an embodiment of the present invention;
FIG. 2 shows various structures of a circular disc according to an embodiment of the present invention;
FIGS. 3a and 3b are two cavity structures of a circular disc according to an embodiment of the present invention;
fig. 4 shows a laser amplifier structure according to an embodiment of the present invention.
In the figure:
1: a fiber coupled output semiconductor laser; 2: pump light; 3: a lens; 4: a conical mirror; 5: a lens; 6: a substrate; 7: a circular disc; 8: an output coupling mirror; 9: laser; 10: a cooling medium; 11: a high reflection mirror; 12: laser;
21: pump light;
62: transparent heat sinks such as sapphire or diamond; 63: heat sink made of tungsten-copper heat conducting material;
71: yb, YAG region; 72: a YAG region; 73:1030nm laser antireflection film; 74: a laser high reflection and pump light antireflection film; 75: YAG end cap.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it will be apparent that the described embodiments are only some embodiments of the invention, but not all embodiments, which do not constitute limitations of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The terms that may be used herein will first be described as follows:
the term "and/or" is intended to mean that either or both may be implemented, e.g., X and/or Y are intended to include both the cases of "X" or "Y" and the cases of "X and Y".
The terms "comprises," "comprising," "includes," "including," "has," "having" or other similar referents are to be construed to cover a non-exclusive inclusion. For example: including a particular feature (e.g., a starting material, component, ingredient, carrier, formulation, material, dimension, part, means, mechanism, apparatus, step, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product or article of manufacture, etc.), should be construed as including not only a particular feature but also other features known in the art that are not explicitly recited.
The term "consisting of … …" is meant to exclude any technical feature element not explicitly listed. If such term is used in a claim, the term will cause the claim to be closed, such that it does not include technical features other than those specifically listed, except for conventional impurities associated therewith. If the term is intended to appear in only a clause of a claim, it is intended to limit only the elements explicitly recited in that clause, and the elements recited in other clauses are not excluded from the overall claim.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like should be construed broadly to include, for example: the connecting device can be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms herein above will be understood by those of ordinary skill in the art as the case may be.
The terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description and to simplify the description, and do not explicitly or implicitly indicate that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.
What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art. The specific conditions are not noted in the examples of the present invention and are carried out according to the conditions conventional in the art or suggested by the manufacturer. The reagents or apparatus used in the examples of the present invention were conventional products commercially available without the manufacturer's knowledge.
The laser component of the disk gain media structure of the present invention constitutes a laser oscillator or laser amplifier:
the laser oscillator comprises an optical fiber coupling output semiconductor laser 1, a lens 3, a conical mirror 4, a lens 5, a circular disc 7 and an output coupling mirror 8 which are sequentially arranged, wherein a circle of conical surface is arranged on the side edge of the circular disc 7;
the pump light 2 emitted by the optical fiber coupling output semiconductor laser 1 is collimated by the lens 3, then is converted into an annular light beam by the conical mirror 4, and is focused by the lens 5 to generate an annular light beam, the annular light beam is incident on the bottom surface of the circular disc 7, and is reflected by the side conical surface of the circular disc 7 and then is transmitted to the center along the radius of the circular disc 7, so that absorption pumping is realized; the laser amplifier comprises an optical fiber coupling output semiconductor laser 1, a lens 3, a conical mirror 4, a lens 5 and a circular disc 7, wherein a circle of conical surface is arranged on the side edge of the circular disc 7;
the laser amplifier is filled with laser 12, the laser 12 forms a certain angle with the lower surface of the round disc 7, and the laser 12 realizes power amplification after being reflected by the lower surface of the disc.
The bottom surface of the circular disc 7 is plated with a laser high reflection film, the high reflection film and the output coupling mirror 8 form a pair of cavity mirrors together, and laser forms oscillation under the pumping action through the pair of cavity mirrors and outputs laser 9.
The bottom surface of the circular disc 7 is provided with a substrate 6, and the substrate 6 is a support or a heat sink of the circular disc 7; alternatively, the substrate 6 is not provided.
The diameter of the round disc 7 is 5 mm-50 mm.
The circular disc 7 and the substrate 6 have any one of the following structures:
1. the middle part of the round disc 7 is not provided with a substrate 6, the Yb is a YAG region 71, the YAG region 72 is arranged at the periphery, the Yb is used for laser gain and athermal pump optical coupling respectively, the upper surface of the round disc 7 is plated with a 1030nm laser antireflection film 73, the lower surface is plated with a laser high reflection and pumping light antireflection film 74, and a cooling medium 10 is arranged below;
2. on the basis of the first structure, a layer of YAG end cap 75 is bonded above the round disc 7, and is used for increasing spontaneous radiation loss, inhibiting ASE and plating the 1030nm laser antireflection film 73 on the upper surface of the YAG end cap 75;
3. on the basis of the first structure, bonding a substrate 6 on the lower surface of a circular disc 7, wherein the substrate 6 adopts a sapphire or diamond transparent heat sink 62;
4. on the basis of the first structure, a substrate 6 is welded on the lower surface of the round disc 7, and a heat sink 63 made of tungsten copper heat conducting material is adopted for the substrate 6.
The laser oscillation cavity formed by the laser high-reflection film on the bottom surface of the circular disc 7 and the output coupling mirror 8 comprises any one of the following structures:
1. the output coupling mirror 8 is arranged opposite to the circular disc 7, and the output coupling mirror 8 is perpendicular to the lower surface of the circular disc 7;
2. the cavity mirror is internally provided with a high-reflection mirror 11, the output coupling mirror 8 and the high-reflection mirror 11 are respectively obliquely arranged with the round disc 7, and the laser forms a certain angle with the lower surface of the round disc 7.
In summary, the laser component of the disk gain medium structure of the embodiment of the invention is a novel side pumping disk laser technology, adopts a simple conical mirror conversion technology to convert fiber coupled output laser into annular laser, and pumps along the side of a circular disk after being folded by nearly 90 degrees, thereby having the advantages of simple pumping structure, convenient debugging and maintenance and the like.
In order to more clearly demonstrate the technical scheme and the technical effects provided by the invention, the following detailed description of the embodiments of the invention is given by way of specific examples.
Example 1
As shown in fig. 1:
an annular beam radial pumping disk laser is shown in FIG. 1:
the optical fiber coupling output semiconductor laser 1, the pump light 2 sent out is collimated by the lens 3, then is converted into an annular light beam by the conical mirror 4, and is focused by the lens 5, so that the annular light beam is generated, is incident on the bottom surface of the circular disc 7, is reflected by the side conical surface of the circular disc 7 and then is transmitted to the center along the radius of the circular disc, and the high-efficiency absorption pumping is realized. The substrate 6 is a support or heat sink for the circular disk 7. And 8 is an output coupling mirror. Typically, the bottom surface of the laser diode 7 is coated with a laser highly reflective film, which forms a pair of cavity mirrors together with the coupling mirror 8, through which the laser beam oscillates under the pumping action, and outputs a laser beam 9.
In the invention, the disc has a certain diameter (generally 5-50 mm), and the pump light enters the gain medium from the side surface of the disc and then propagates along the radial direction of the disc, so that the invention has a larger absorption length and can realize single high-efficiency absorption pumping. By optimizing parameters such as doping concentration and diameter, or by adopting nonlinear doping in the radial direction, uniform pumping can be realized. Compared with a multi-path pumping mode, the pumping mode has the advantages of simple structure, convenience in assembly and adjustment and the like; compared with the side pumping mode, the laser device does not need to design complex pumping optical elements around the disc, only needs to convert the lasers of the optical fiber coupling-out semiconductor lasers with various power levels into a ring shape, and enters the disc from the side coupling, and almost no enough space around the disc is required to contain enough laser diodes. Compared with the side pump, the side pump has the advantages of simple structure, convenient assembly and adjustment, high pumping power and the like.
In the present invention, the circular disk 7 and the substrate 6 may have various structures. As shown in fig. 2 (a) to (d). In the figure, yb is taken as an example of the gain medium, YAG is taken as an example of the pump light, 940nm is taken as an example, and 1030nm is taken as an example of the output laser light. In practice the gain medium material is not limited to this illustrationExamples include, but are not limited to, nd: YAG, tm: YAG, ho: KYW, yb: CALGO, cr: znSe, yb: luScO 3 And Yb: lu 2 O 3 The pump light wavelength is correspondingly changed according to different gain media. When the circular disc is thick, the substrate 6 may not be needed, and a simple scheme as shown in fig. 2 (a) may be considered, and the circular disc is sequentially Yb, YAG region 71 and YAG region 72 from the center to the outside, for laser gain and athermal pump optical coupling, respectively. The upper surface of the round disc crystal is coated with 1030nm laser antireflection film 73, and the lower surface is coated with laser high reflection film and pumping light antireflection film 74. The composite circular disc is directly cooled by the cooling medium 10. When the power is increased, a scheme shown in fig. 2 (b) can be considered, and a YAG end cap 75 is bonded above the circular disc shown in fig. 2 (a), so that the spontaneous emission loss is increased and ASE is suppressed. In this configuration a 1030nm laser antireflection film 73 is coated on the upper surface of a YAG end cap 75. With further power boosting, the solution shown in fig. 2 (c) can be considered, where a composite circular disc is bonded with a transparent heat sink 62 of sapphire or diamond, etc. The sapphire or diamond heat sink is transparent to the pump light, has high heat conductivity coefficient and is a very excellent heat sink material. However, this solution places high demands on the bonding process. Fig. 2 (d) is a more easily implemented solution, where the composite circular disc is welded on the heat sink 63 made of heat conductive material such as tungsten copper, so as to achieve efficient heat dissipation.
In the present invention, the laser oscillation cavity based on the circular disc 7 may have various structural forms. Of these, two typical cavity types are shown in fig. 3a and 3 b. In fig. 3a, 8 is a laser output coupling mirror, the upper surface of the circular disc crystal is coated with a laser antireflection film 73, and the lower surface is coated with a laser high reflection film and a pump light antireflection film 74. Wherein the laser high reflection film is used as a high reflection mirror in the cavity mirror. The laser is perpendicular to the output coupling mirror and the high reflection mirror. The solution shown in fig. 3b is also considered, 8 being the laser output coupling mirror and 11 being the high-reflection mirror in the cavity mirror. The laser light is reflected at the lower surface 74 of the gain circular disc and the laser light is at an angle to the lower surface, and accordingly, a high reflectivity of the laser light plated on the lower surface of the laser light is required at this angle.
In the invention, the laser oscillation cavity based on the circular disc 7 can also be used as an amplifier structure. As shown in fig. 4, laser 12 is injected into the laser amplifier, and the laser forms a certain angle with the lower surface of the circular disc 7, and the laser is reflected by the lower surface of the disc to realize power amplification.
The technical key point of the invention is an annular beam pumping structure, the optical fiber coupling output laser is converted into annular laser by adopting a simple conical mirror conversion technology, and the annular laser is pumped along the side of a circular disc after being folded by approximately 90 degrees, and compared with a plurality of Cheng Bengpu discs, the annular beam pumping structure has the advantages of simple pumping structure, convenient debugging and maintenance and the like. Compared with a side pumping structure proposed by Boeing company, a mature optical fiber coupling module can be utilized, and pumping power is not limited by side space. The annular beam radial pumping structure is the key point that this patent needs protection.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. The information disclosed in the background section herein is only for enhancement of understanding of the general background of the invention and is not to be taken as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.

Claims (6)

1. A laser assembly of disc gain media construction, the assembly comprising a laser oscillator or laser amplifier:
the laser oscillator comprises an optical fiber coupling output semiconductor laser (1), a lens (3), a conical mirror (4), a lens (5), a circular disc (7) and an output coupling mirror (8) which are sequentially arranged, wherein a circle of conical surface is arranged on the side edge of the circular disc (7);
the pump light (2) emitted by the optical fiber coupling output semiconductor laser (1) is collimated by the lens (3), then is converted into an annular light beam by the conical mirror (4), is focused by the lens (5) to generate an annular light beam, is incident on the bottom surface of the circular disc (7), is reflected by the side conical surface of the circular disc (7) and then is transmitted to the center along the radius of the circular disc (7), so that absorption pumping is realized;
the laser amplifier comprises an optical fiber coupling output semiconductor laser (1), a lens (3), a conical mirror (4), a lens (5) and a circular disc (7), wherein a circle of conical surface is arranged on the side edge of the circular disc (7);
the laser amplifier is injected with laser (12), the laser (12) forms a certain angle with the lower surface of the round disc (7), and the laser (12) realizes power amplification after being reflected by the lower surface of the disc.
2. The laser module of claim 1, wherein the bottom surface of the circular disc (7) is coated with a laser highly reflective film, the highly reflective film and the output coupling mirror (8) together form a pair of cavity mirrors through which laser light is oscillated by pumping, and the laser light (9) is output.
3. The laser assembly of claim 2, wherein the bottom surface of the circular disc (7) is provided with a substrate (6), and the substrate (6) is a support or heat sink for the circular disc (7); alternatively, the substrate (6) is not provided.
4. A laser assembly of a disc gain medium structure according to claim 3, characterized in that the diameter of the circular disc (7) is 5-50 mm.
5. A laser assembly of disc gain medium structure according to claim 4, characterized in that the circular disc (7) and substrate (6) are of any one of the following structures:
1. the middle part of the round disc (7) is Yb, the YAG area (71) and the periphery of the round disc are YAG area (72) which are used for laser gain and athermal pump optical coupling respectively, the upper surface of the round disc (7) is plated with a 1030nm laser antireflection film (73), the lower surface is plated with a laser high reflection and pumping light antireflection film (74), and a cooling medium (10) is arranged below the round disc;
2. on the basis of the first structure, a layer of YAG end cap (75) is bonded above the round disc (7) and is used for increasing spontaneous radiation loss, inhibiting ASE and plating the 1030nm laser antireflection film (73) on the upper surface of the YAG end cap (75);
3. on the basis of the first structure, a substrate (6) is bonded on the lower surface of a circular disc (7), and the substrate (6) adopts a sapphire or diamond transparent heat sink (62);
4. on the basis of the first structure, a substrate (6) is welded on the lower surface of the round disc (7), and the substrate (6) adopts a heat sink (63) made of tungsten-copper heat conducting materials.
6. The laser module according to claim 5, wherein the laser oscillation cavity formed by the laser highly reflective film on the bottom surface of the circular disc (7) and the output coupling mirror (8) comprises any one of the following structures:
1. the output coupling mirror (8) is arranged opposite to the circular disc (7), and the output coupling mirror (8) is perpendicular to the lower surface of the circular disc (7);
2. the cavity mirror is internally provided with a high-reflection mirror (11), the output coupling mirror (8) and the high-reflection mirror (11) are respectively obliquely arranged with the round disc (7), and the laser forms a certain angle with the lower surface of the round disc (7).
CN202310478380.9A 2023-04-28 2023-04-28 Laser assembly with disc gain medium structure Pending CN116598870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310478380.9A CN116598870A (en) 2023-04-28 2023-04-28 Laser assembly with disc gain medium structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310478380.9A CN116598870A (en) 2023-04-28 2023-04-28 Laser assembly with disc gain medium structure

Publications (1)

Publication Number Publication Date
CN116598870A true CN116598870A (en) 2023-08-15

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