CN116131076A - All-solid-state four-way structure vortex beam power amplifier - Google Patents
All-solid-state four-way structure vortex beam power amplifier Download PDFInfo
- Publication number
- CN116131076A CN116131076A CN202310217365.9A CN202310217365A CN116131076A CN 116131076 A CN116131076 A CN 116131076A CN 202310217365 A CN202310217365 A CN 202310217365A CN 116131076 A CN116131076 A CN 116131076A
- Authority
- CN
- China
- Prior art keywords
- vortex
- light
- gain medium
- amplified
- seed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
-
- 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
- H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
- H01S3/2308—Amplifier arrangements, e.g. MOPA
- H01S3/2325—Multi-pass amplifiers, e.g. regenerative amplifiers
- H01S3/2341—Four pass amplifiers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
- Lasers (AREA)
Abstract
The invention discloses an all-solid-state four-way structure vortex beam amplifier. According to the invention, through the design of pump shaping and a four-way structure main oscillation power amplification light path, the seed vortex light beam passes through the gain crystal four times and is matched with the shaped annular pump light beam mode, so that the power amplification of vortex light beams with different orders is realized. The system provided by the invention has the advantages of simple structure and strong stability, and the power amplification ratio is obviously improved compared with that of a vortex beam main oscillation power amplification system with a straight-through structure, so that a new light source scheme is provided for the technical fields of remote laser radar, laser processing and the like with higher requirements on vortex beam power.
Description
Technical Field
The invention belongs to the technical field of lasers, and relates to an all-solid-state four-way structure vortex beam power amplifier.
Background
Vortex beam (vortex beam) is a novel structured light field carrying orbital angular momentum (orbital angular momentum, OAM) with complex amplitude comprising a helical phase term
(l is topology payload, ">
Angular coordinates), each photon carries an OAM size of +.>
(/>
To reduce the planck constant), also known as the order of the vortex beam. The unique characteristic of vortex light beam makes it have wide application background in the fields of super-large capacity optical communication, laser radar, optical micromanipulation, high-dimensional information storage, quantum technology and other leading-edge technology. At present, scholars at home and abroad develop a great deal of research work aiming at vortex beam generation technology, and the generation mode of the vortex beam generation technology can be divided into two types of extraluminal mode conversion and intracavity direct generation. However, due to the low anti-damage threshold of the modulation device, the power of the vortex beam generated at present is smaller, and the output power is lower when the order is higher, so that the practical application of the vortex beam in the scenes of remote laser radar, laser processing and the like which need higher laser power is limited to a certain extent, and therefore, how to realize the power amplification of the vortex beam is one of technical bottlenecks to be broken through at present. The main oscillation power amplification (Master Oscillator Power Amplifier, MOPA) technology is a technology of injecting seed light into a gain medium under the action of pump light, thereby implementing power amplification of the seed light to generate high-power laser, and the amplified laser has the same frequency and mode characteristics as the seed light. However, the existing MOPA technology is mostly used for power amplification of a fundamental mode gaussian beam, and a straight-through or double-pass structure is often adopted, so that the problems of high difficulty in mode matching, low energy extraction efficiency and the like exist in power amplification of structural beams with complex transverse mode distribution such as vortex beams and the like. In order to realize the power amplification of vortex beams with larger multiplying power, a mode that a plurality of gain media are cascaded and a plurality of pumps act simultaneously is often adopted, the problems of complex structure, higher cost and the like are existed,
disclosure of Invention
In view of this, the invention provides an all-solid-state four-way structure vortex beam power amplifier. The invention skillfully designs a four-way MOPA amplifier for amplifying the power of a vortex beam, which leads an injected seed vortex beam to sequentially pass through a single gain medium under the pumping action four times by introducing a Faraday rotator and a polarization optical device, and simultaneously uses a cone lens and a collimation beam expansion lens group to shape a pumping beam, thereby realizing the mode matching between the various-order seed vortex beams and the pumping beam in a four-way optical path in the single gain medium and finally realizing the high-magnification power amplification of the seed vortex beam.
The invention relates to an all-solid-state four-way structure vortex beam power amplifier which comprises shaping of pump light and amplification of vortex beams with different orders, wherein shaping of the pump light is realized through a conical lens and a collimation and beam expansion lens group, so that the pump light is matched with a vortex beam mode of a seed vortex beam, the energy extraction efficiency and the power amplification effect which are as large as possible are obtained, and an incident horizontal linear polarization seed vortex beam to be amplified is enabled to pass through a single gain medium four times through a Faraday rotator and a polarization optical device, and finally the vortex beam with amplified power is output.
The invention relates to an all-solid-state four-way structure vortex beam power amplifier which comprises a pumping source, a collimation beam expansion lens group, a conical lens, a seed vortex light source, two 45-degree dichroics, a gain medium, two polarization beam splitting prisms, a quarter wave plate, a half wave plate, a Faraday rotator and two reflectors. Wherein:
the pump source is used for generating pump light and providing energy injection for the gain medium;
the beam expansion collimating lens group consists of two lenses, is arranged in a laser light path behind the pumping source and is used for focusing the pumping beam to the center of the gain medium after being collimated;
the cone lens is arranged in a laser light path between the two lenses of the collimating lens group and is used for shaping the pumping beam into an annular beam;
the seed vortex light source is used for generating various vortex light beams with different orders and providing seed vortex light beams to be amplified for the amplifier;
the two 45-degree bicolor mirrors are placed at 45 degrees and are high in transmission to the incident pump light and high in reflection to the seed vortex light beam and the amplified light beam, wherein the first 45-degree bicolor mirror is placed in a pump laser light path behind the collimation and beam expansion lens group and is used for coupling pump light into the gain medium, and the second 45-degree bicolor mirror is placed in a laser light path behind the gain medium and is used for coupling residual pump light absorbed by the gain medium out of the amplifier;
the gain medium is arranged in a laser light path between the two 45-degree bicolor mirrors and is used for absorbing the energy of the pumping light and amplifying the power of the seed vortex light beam;
the two polarization beam splitting prisms are high in transmittance to the horizontal linear polarized light beam (p light) and high in reflection to the vertical linear polarized light beam (s light) and are used for orthogonal polarization beam splitting, wherein the first polarization beam splitting prism is arranged in a laser light path behind the seed vortex light source, and the first polarization beam splitting prism, the Faraday rotator and the half wave plate form an optical isolator together and is used for transmitting the incident horizontal linear polarized seed vortex light beam and reflecting the vortex light beam amplified by the gain medium four times; the second polarization beam splitting prism is arranged in a laser light path behind the Faraday rotator and the half wave plate and is used for transmitting the injected seed vortex beam and the vortex beam amplified by the gain medium for four times and reflecting the amplified beam amplified by the gain medium for the second time;
the Faraday rotator is arranged in a laser light path behind the first polarization beam splitting prism and is used for clockwise rotating 45 degrees of incident linearly polarized light;
the half wave plate is arranged in a laser light path behind the Faraday rotator, and a fast axis is arranged at 22.5 degrees with a horizontal plane and is used for acting together with the Faraday rotator to keep polarization unchanged for the horizontally linearly polarized light which is incident in the normal direction and convert the horizontally linearly polarized light which is incident in the opposite direction into the vertically linearly polarized light;
the quarter wave plate is arranged in a reflected laser light path of the second 45-degree dichroic mirror, and a fast axis of the quarter wave plate is arranged at 45 degrees with a horizontal plane and is used for changing the polarization state of the incident light after returning;
the two reflectors are high in reflection of the amplified vortex light beams, the first reflector is arranged in a laser light path behind the quarter wave plate and used for reflecting one-way and three-way amplified vortex light beams, and the second reflector is arranged in a laser light path behind the second polarized light splitting prism and used for reflecting two-way amplified vortex light beams.
The invention has the following beneficial effects:
(1) By designing the four-way structure, the seed vortex light beam passes through the gain medium four times, so that the energy extraction efficiency is effectively improved, and the power amplification of the low-power vortex light beams with different orders can be realized;
(2) The system has the advantages of simple structure, low cost, strong overall system adaptability and high flexibility, and provides a technical solution for generating high-power high-order vortex beams.
Drawings
Fig. 1 is a schematic structural diagram of an all-solid-state four-way scroll beam power amplifier provided by the invention, wherein: 1 is a pumping source; 2. 3 is a lens, and forms a collimation and beam expansion lens group together; 4 is a conical lens; 5. 6 is a 45 DEG dichroic mirror; 7 is a gain medium; 8 is a seed vortex light source; 9. 10 is a polarization beam splitter prism; 11 is Faraday rotator; 12 is a half wave plate; 13 is a quarter wave plate; 14. 15 is a mirror.
Fig. 2 is a graph showing the output power of a 1645nm vortex beam with different orders amplified by using the all-solid-state four-way structure vortex beam power amplifier of the present invention, wherein: the abscissa is the power of the pump light, the ordinate is the power of the amplified vortex light beam, and the upper right corner is the intensity distribution of the amplified vortex light beam.
Detailed Description
The following detailed description refers to the accompanying drawings.
The invention relates to an all-solid-state four-way structure vortex beam amplifier, which is shown in figure 1 in the structure diagram: the device comprises a pumping source (1), a collimation and beam expansion lens group (2, 3), a conical lens (4), 2 45-degree bicolor mirrors (5, 6), a gain medium (7), a seed vortex light source (8), polarization beam splitting prisms (9, 10), a Faraday rotator (11), a half wave plate (12), a quarter wave plate (13) and reflecting mirrors (14, 15). Wherein:
the pump source (1) is used for generating pump light and providing energy injection for the gain medium (7); the beam expansion collimating lens groups (2, 3) are arranged in a laser light path behind the pumping source and are used for focusing the pumping beam on the center of the gain medium after being collimated; the conical lens (4) is arranged in a collimation pumping light path behind the lens (2) in the collimation lens group and is used for shaping the pumping light beam into an annular light beam; the seed vortex light source (8) is used for generating various vortex light beams with different orders and providing seed vortex light beams to be amplified for the amplifier; the two 45-degree dichroic mirrors (5, 6) are placed at 45 degrees and are high in transmission to incident pump light and high in reflection to seed vortex beams and amplified beams, wherein the first 45-degree dichroic mirror (5) is placed in a pump laser light path behind a collimation and beam expansion lens group and is used for coupling pump light into a gain medium, and the second 45-degree dichroic mirror (6) is placed in a laser light path behind the gain medium and is used for coupling residual pump light absorbed by the gain medium out of an amplifier; the gain medium (7) is arranged in a laser light path between the two 45-degree bicolor mirrors (5, 6) and is used for absorbing the energy of the pumping light and amplifying the power of the seed vortex light beam; the two polarization beam splitting prisms (9, 10) are high in transmittance to the horizontal linear polarized light beam (p light) and high in reflection to the vertical linear polarized light beam (s light) and are used for orthogonal polarization beam splitting, wherein the first polarization beam splitting prism (9) is arranged in a laser light path behind the seed vortex light source, and the Faraday rotator (11) and the half wave plate (12) together form an optical isolator and are used for transmitting the incident horizontal linear polarized seed vortex light beam and reflecting the vortex light beam amplified by the gain medium four times; the second polarization beam splitting prism (10) is arranged in a laser light path behind the Faraday rotator (11) and the half wave plate (12) and is used for transmitting the injected seed vortex beam and the vortex beam amplified by the gain medium for four times and reflecting the amplified beam amplified by the gain medium for two times; the Faraday rotator (11) is arranged in a laser light path behind the first polarization beam splitting prism (9) and is used for rotating the incident linearly polarized light clockwise by 45 degrees; the second wave plate (12) is arranged in a laser light path behind the Faraday rotator (11), and a fast axis is arranged at 22.5 degrees with a horizontal plane and is used for acting together with the Faraday rotator (11) to keep polarization unchanged for normal incidence horizontal linear polarized light and convert reverse incidence horizontal linear polarized light into vertical linear polarized light; the quarter wave plate (13) is arranged in a reflected laser light path of the second 45-degree double-color mirror (6), and a fast axis of the quarter wave plate is arranged at 45 degrees with a horizontal plane and is used for changing the polarization state of incident light after returning; the two reflectors (14, 15) are highly reflective to the amplified vortex light beams, the first reflector (14) is arranged in a laser light path behind the quarter wave plate (13) and used for reflecting one-way and three-way amplified vortex light beams, and the second reflector (15) is arranged in a laser light path behind the second polarization splitting prism (10) and used for reflecting two-way amplified vortex light beams.
The invention relates to an all-solid-state four-way structure vortex beam power amplifier, which comprises the following working processes and principles:
the pump source (1) generates a pump beam, the pump beam is changed into an annular beam after passing through the beam expansion collimating lens groups (2, 3) and the conical lens (4), the annular beam is coupled into the amplifier by the 45-degree bicolor lens (5), the amplifier is focused in the gain medium (7), and the spot size of the annular beam after shaping the pump beam can be changed by adjusting the position of the conical lens, so that the optimal mode matching with the seed vortex beam to be amplified is realized; the gain medium (7) absorbs the pumping light beam to amplify the power of the pumping light beam passing through the seed vortex, the residual pumping light beam is coupled out of the amplifier through the second 45-degree double-color mirror (6), and the seed vortex light beam and the amplified vortex light beam are reflected on the 45-degree double-color mirrors (5, 6); the seed vortex light source (8) can provide horizontal linear polarization vortex light beams with different orders, the polarization states of the horizontal linear polarization vortex light beams are kept unchanged after passing through the polarization beam splitter prism (9), the Faraday rotator (11) and the half wave plate (12) in sequence, the horizontal linear polarization vortex light beams are reflected by the first 45-degree dichroic mirror (5) after being transmitted by the polarization beam splitter prism (10), and then the horizontal linear polarization vortex light beams enter the gain medium (3) to be aligned and mode-matched with the annular pumping light beams, so that first power amplification (one-way amplification) is realized; the horizontal linear polarized vortex beam after one pass amplification is reflected by a second 45-degree double-color mirror (6), passes through a quarter wave plate (13) which is placed with a fast axis and a horizontal plane being 45 degrees, is reflected by a reflecting mirror (14), then passes through the quarter wave plate (13) again and is converted into a vertical linear polarized vortex beam, and passes through a gain medium (3) for the second time to realize the second power amplification (two-pass amplification); the vertically polarized vortex light beam amplified by two-way is reflected by a 45-degree double-color mirror (5) and then reflected by a polarized beam splitter prism (10) to a reflecting mirror (15), and then reflected by the reflecting mirror (15), and returns to a gain medium along the same light path to realize third power amplification (three-way amplification); the vertical polarized vortex light beam amplified by the tee joint is reflected by a reflecting mirror (14) after passing through a quarter wave plate (13), then is converted into a horizontal polarized vortex light beam after passing through the quarter wave plate (13) again, and passes through a gain medium for the fourth time after being reflected by a 45-degree bicolor mirror (6) so as to realize fourth power amplification (four-way amplification); the four-way amplified horizontal linear polarized vortex beam is reflected by a 45-degree dichroic mirror (5), transmitted by a polarization beam splitter prism (10), then converted into vertical linear polarization after passing through a half wave plate (12) and a Faraday rotator (11), reflected by a polarization beam splitter prism (9) and then output from an amplifier, and the whole four-way structure power amplifying process is completed.
In summary, various seed vortex beams with different orders can be subjected to mode matching by adjusting the conical lens and the shaped annular pump light, and meanwhile, a special four-way structure designed by orthogonal polarization characteristics is utilized to realize final four-way power amplification.
The practical performance of the all-solid-state four-way structured vortex beam power amplifier of the present invention is described below in conjunction with the examples.
Examples: 1645nm vortex beam power amplifier with all-solid-state four-way structure
In the embodiment, a 1645nm third-order vortex light beam is used as a seed vortex light source, a 1532nm fiber laser is used as a pumping source, an Er-YAG crystal is used as a gain medium, and finally the same-order 1645nm vortex light beam with high gain and power amplified is generated at the output end of the amplifier. The experimental results are shown in fig. 2, wherein: the left column of the graph (a) shows the far field diffraction intensity distribution before and after the third-order vortex beam detected by the CCD is amplified, and the right column shows the far field diffraction intensity distribution after passing through the inclined lens; (b) The power amplification characteristic curve is the power of the third-order vortex beam, the abscissa is the power of the pumping source, and the ordinate is the power of the amplified third-order vortex beam. Fig. 2 shows that the vortex beam amplifier with the all-solid-state four-way structure successfully realizes high-gain power amplification of vortex beams.
It should be noted that the all-solid-state four-way structure vortex beam amplifier is not limited by various devices in the embodiment and is not limited by the selection of a pump source, a seed vortex light source, a gain medium and the like.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides an all-solid-state cross structure vortex light beam power amplifier, possesses pump source, collimation beam expanding lens group, conical lens, seed vortex light source, two 45 dichroics, gain medium, two polarization beam splitting prisms, quarter wave plate, half wave plate, faraday rotator and two speculums, wherein:
the pump source is used for generating pump light and providing energy injection for the gain medium;
the collimating and beam expanding lens group consists of two lenses, is arranged in a laser light path behind the pumping source and is used for focusing the pumping beam into the gain medium after being collimated;
the cone lens is arranged in a laser light path between the two lenses of the collimating lens group and is used for shaping the pumping beam into an annular beam, adjusting the front and back positions of the cone lens, changing the spot size of the annular beam and ensuring the optimal mode matching of the annular pumping beam and the seed vortex beam in the gain medium under the condition of four-way;
the seed vortex light source is used for generating vortex light beams to be amplified with different orders;
the two 45-degree bicolor mirrors are placed at 45 degrees and are high in transmission to the incident pump light and high in reflection to the seed vortex light beam and the amplified light beam, wherein the first 45-degree bicolor mirror is placed in a laser light path behind the collimation and beam expansion lens group to enable the pump light to be coupled into the gain medium, and the second 45-degree bicolor mirror is placed in the laser light path behind the gain medium to enable the residual pump light absorbed by the gain medium to be coupled out of the amplifier;
the gain medium is arranged in a laser light path behind the first 45-degree dichroic mirror and is used for absorbing the energy of the pumping light and amplifying the power of the seed vortex light beam;
the two polarization beam splitting prisms are high in transmittance to the horizontal linear polarized light beam (p light) and high in reflection to the vertical linear polarized light beam (s light) and are used for orthogonal polarization beam splitting, wherein the first polarization beam splitting prism is arranged in a laser light path behind the seed vortex light source, and the first polarization beam splitting prism, the Faraday rotator and the half wave plate form an optical isolator together and is used for transmitting the incident horizontal linear polarized seed vortex light beam and reflecting the vortex light beam amplified by the gain medium four times; the second polarization beam splitting prism is arranged in a laser light path behind the Faraday rotator and the half wave plate and is used for transmitting the injected seed vortex beam and the vortex beam amplified by the gain medium for four times and reflecting the amplified beam amplified by the gain medium for the second time;
the Faraday rotator is arranged in a laser light path behind the first polarization beam splitting prism and is used for clockwise rotating 45 degrees of incident linearly polarized light;
the half wave plate is arranged in a laser light path behind the Faraday rotator, and a fast axis is arranged at 22.5 degrees with a horizontal plane and is used for acting together with the Faraday rotator to keep polarization unchanged for the horizontally linearly polarized light which is incident in the normal direction and convert the horizontally linearly polarized light which is incident in the opposite direction into the vertically linearly polarized light;
the quarter wave plate is arranged in a reflected laser light path of the second 45-degree dichroic mirror, and a fast axis of the quarter wave plate is arranged at 45 degrees with a horizontal plane and is used for changing the polarization state of the incident light after returning;
the two reflectors are high in reflection of the amplified vortex light beams, the first reflector is arranged in a laser light path behind the quarter wave plate and used for reflecting one-way and three-way amplified vortex light beams, and the second reflector is arranged in a laser light path behind the second polarized light splitting prism and used for reflecting two-way amplified vortex light beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310217365.9A CN116131076A (en) | 2023-03-08 | 2023-03-08 | All-solid-state four-way structure vortex beam power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310217365.9A CN116131076A (en) | 2023-03-08 | 2023-03-08 | All-solid-state four-way structure vortex beam power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116131076A true CN116131076A (en) | 2023-05-16 |
Family
ID=86301129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310217365.9A Pending CN116131076A (en) | 2023-03-08 | 2023-03-08 | All-solid-state four-way structure vortex beam power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116131076A (en) |
-
2023
- 2023-03-08 CN CN202310217365.9A patent/CN116131076A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4389617A (en) | Combination ring cavity and backward Raman waveguide amplifier | |
| CN102510000B (en) | High-gain double-stroke traveling-wave amplifier for picosecond laser pulse amplification | |
| CN101154789A (en) | Optical Parametric Amplification System Based on All-Fiber Laser | |
| CN111668691A (en) | High-power high-repetition-frequency hundred picosecond laser | |
| CN114336254B (en) | High-brightness main oscillation power amplification picosecond laser system | |
| CN100340917C (en) | Two-way laser amplifier of excited Brillonin scattering conjugate mirror with high energy and power | |
| CN116131076A (en) | All-solid-state four-way structure vortex beam power amplifier | |
| CN112615238A (en) | Large-energy high-efficiency all-solid-state green laser | |
| CN212304188U (en) | Hundred picoseconds laser | |
| CN212304190U (en) | All-solid-state group beam laser | |
| CN108512027B (en) | Annular cavity amplifying device for picosecond seed laser pulse | |
| CN212342993U (en) | Ultraviolet fiber laser | |
| CN113725711B (en) | Optical vortex optical fiber laser based on double vortex wave plates | |
| CN216598384U (en) | Stimulated Brillouin scattering and stimulated Raman scattering combined compressed ultrashort pulse laser | |
| CN113346345B (en) | Solid laser capable of outputting vector vortex light beams with different modes at two ends | |
| CN113314941A (en) | High-efficiency double-end pumping assembly multi-pass slab laser amplifier | |
| CN216121194U (en) | Annular 4 lead to laser amplifier | |
| CN215645415U (en) | Space stereo multi-pass amplifier for ultrafast pulse laser amplification | |
| CN116865079B (en) | Dual-mode superposition regulation laser | |
| CN202405610U (en) | High-gain double-route traveling-wave amplifier for picosecond laser pulse amplification | |
| CN218005525U (en) | High-stability laser based on SBS standing wave cavity | |
| CN202817481U (en) | High-peak power picosecond laser with flexibly adjustable output pulse number | |
| CN215267057U (en) | Novel solid laser amplifier | |
| CN218828405U (en) | Picosecond seed laser | |
| CN218161199U (en) | FMCW coaxial receiving integrated polarization maintaining optical fiber amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |