CN114976843A - Tunable dual-wavelength output slab laser - Google Patents
Tunable dual-wavelength output slab laser Download PDFInfo
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- CN114976843A CN114976843A CN202210816150.4A CN202210816150A CN114976843A CN 114976843 A CN114976843 A CN 114976843A CN 202210816150 A CN202210816150 A CN 202210816150A CN 114976843 A CN114976843 A CN 114976843A
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/1001—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by controlling the optical pumping
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10061—Polarization control
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/109—Frequency multiplication, e.g. harmonic generation
Abstract
The invention relates to the field of high-power solid lasers, in particular to a tunable dual-wavelength output slab laser, which comprises a seed optical isolation and shaping module, a slab four-way amplification module and a tunable module, wherein the seed optical isolation and shaping module is matched with a transmission light path of the slab four-way amplification module and the tunable module; the seed light isolation and shaping module generates seed light and shapes the seed light into a rectangular light spot matched with the batten four-way amplification module, the shaped seed light enters the batten four-way amplification module to be amplified, and the amplified seed light enters the adjustable resonance module to be subjected to wavelength adjustment. The invention realizes the high-beam-quality hundred picosecond single longitudinal mode laser output with tunable repetition frequency, energy and wavelength, realizes the four-pass amplification of the seed light through the lath four-pass amplification module, effectively improves the power and the beam quality of the seed light, and reduces the influence of the thermal lens effect on the laser.
Description
Technical Field
The invention relates to the field of high-power solid lasers, in particular to a tunable dual-wavelength output slab laser.
Background
The laser pulse with high pulse energy and short pulse width has wide application prospect in the fields of laser processing, laser ignition, laser radar and the like. In the field of laser radars, a sub-nanosecond laser source can be used to achieve centimeter-level distance accuracy. In addition, in laser radar applications, high pulse energy is beneficial for improving echo intensity and long-range ranging. The short cavity q-switching technique is a promising short-period laser generation technique. However, the small mode volume in a short length laser cavity limits the increase in pulse energy. Master Oscillator Power Amplifier (MOPA) technology is used to amplify the output energy of a short pulse width laser pulse.
For MOPA technology, the thermal lens effect of the gain module is unavoidable, but the thermal lens effect may deteriorate laser performance and even cause damage to optical elements. The seed light employs multiple stages of amplification, spreading the thermal load across the amplification stages, and adding adjustment elements between the amplification stages to compensate for thermal lens effects. In addition, in order to obtain a high gain coefficient, the pump energy of the gain module is usually very high, and an Amplified Spontaneous Emission (ASE) effect is easily generated. The slab laser has a larger heat dissipation area and a smaller thermal effect, so that the slab laser becomes one of the most effective ways to obtain high-power and high-beam-quality laser output. And the slab laser can realize multi-pass amplification, thereby further improving the gain coefficient.
Disclosure of Invention
Aiming at the technical problem that the existing laser is greatly influenced by the thermal lens effect, the invention provides a tunable dual-wavelength output slab laser, which realizes a simple structure of high repetition frequency and high-energy slab laser four-pass amplification through a four-pass amplification module, and realizes the tunability of energy and wavelength through designing a frequency doubling system and an energy adjusting system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: a tunable dual-wavelength output slab laser is characterized by comprising a seed optical isolation and shaping module, a slab four-way amplification module and a tunable module, wherein the seed optical isolation and shaping module, the slab four-way amplification module and the tunable module are matched in transmission light path; the seed light isolation and shaping module generates seed light and shapes the seed light into a rectangular light spot matched with the batten four-way amplification module, the shaped seed light enters the batten four-way amplification module for amplification, and the amplified seed light enters the adjustable resonance module for wavelength adjustment.
Seed optical isolation and plastic module is including the single mode laser instrument of indulging, first plastic mirror, second plastic mirror, first speculum and the second mirror that sets gradually, and the central point setting of the single mode laser instrument of indulging, first plastic mirror, second plastic mirror and first speculum is on same water flat line, and first speculum is relative with second mirror central point, and seed light is exported by the second mirror and gets into the lath four ways and enlarge the module.
And a first isolator is arranged between the single longitudinal mode laser and the first shaping mirror, and the single longitudinal mode laser, the first isolator and the first shaping mirror are arranged on the same horizontal line.
The first shaping mirror is a spherical plano-concave cylindrical lens, the second shaping mirror is a spherical plano-convex cylindrical lens, and the distance between the first shaping mirror and the second shaping mirror is 139-141 mm.
The slab four-way amplification module comprises a first spatial filter, a first polaroid, a slab amplifier, a first reflection module and a second reflection module, the central points of the first spatial filter, the first polaroid and the slab amplifier are arranged on the same horizontal line, the first reflection module and the second reflection module are matched with a transmission light path of the slab amplifier, and seed light enters the tunable module after being output by the first polaroid.
The first reflecting module comprises a third reflecting mirror and a fourth reflecting mirror, and the third reflecting mirror and the fourth reflecting mirror correspond to the central point of the fourth reflecting mirror; the second reflecting module comprises a fifth reflecting mirror, a sixth reflecting mirror, a second spatial filter, a quarter glass sheet and a zero degree reflecting mirror, the central points of the slab amplifier, the fifth reflecting mirror and the sixth reflecting mirror correspond to each other, and the central points of the sixth reflecting mirror, the second spatial filter, the quarter glass sheet and the zero degree reflecting mirror are arranged on the same horizontal line.
The second isolator is arranged between the first space filter and the first polaroid, the centers of the first space filter, the second isolator and the first polaroid are arranged on the same horizontal line, the first space filter comprises a plano-convex lens I and a plano-convex lens II, and the distance between the plano-convex lens I and the plano-convex lens II is 1120 mm.
The slab amplifier is a double-end pump, the input surface of the double-end pump is plated with a 1064 nm high-transmittance film, and the side surface of the double-end pump is plated with SiO 2 Film on SiO 2 The film is plated with a layer of 808 nm high-permeability film.
The tunable module comprises a second polaroid, an adjustable half glass slide, a third polaroid, a first collimating mirror, a second collimating mirror and a frequency doubling system, wherein the central points of the second polaroid, the adjustable half glass slide, the third polaroid, the first collimating mirror, the second collimating mirror and the frequency doubling system are arranged on the same horizontal line.
The frequency doubling system comprises a movable bottom plate, a frequency doubling crystal and a color separating mirror, wherein the frequency doubling crystal and the color separating mirror are arranged on the movable bottom plate, and the centers of the second collimating mirror, the frequency doubling crystal and the color separating mirror are arranged on the same horizontal line.
According to the invention with the structure, the seed light circular light spot is shaped into the uniform rectangular light spot through the seed light isolation and shaping module so as to meet the damage threshold of the incidence surface of the four-range amplification batten. Meanwhile, the seed light is processed through the lath four-way amplification module, the four-way amplification of the seed light is realized, the power and the beam quality of the seed light are effectively improved, and the influence of the thermal lens effect on the laser is reduced. In addition, the first spatial filter and the second spatial filter are matched to ensure high-beam-quality output, and the frequency doubling system is used for switching the frequency doubling of the output laser, so that the application scenes of the laser beam laser system are effectively widened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is a seed optical isolation and shaping module, 2 is a slab four-way amplification module, 3 is a tunable module, 1-1 is a single longitudinal mode laser, 1-2 is a first isolator, 1-3 is a first shaping mirror, 1-4 is a second shaping mirror, 1-5 is a first reflector, 1-6 is a second reflector, 2-1 is a first spatial filter, 2-2 is a second isolator, 2-3 is a first polarizer, 2-4 is a slab amplifier, 2-5 is a third reflector, 2-6 is a fourth reflector, 2-7 is a fifth reflector, 2-8 is a sixth reflector, 2-9 is a second spatial filter, 2-10 is a quarter glass, 2-11 is a zero degree reflector, 3-1 is a second polarizer, 3-2 is an adjustable half glass slide, 3-3 is a third polaroid, 3-4 is a first collimating mirror, 3-5 is a second collimating mirror, 3-6 is a movable bottom plate, 3-7 is a frequency doubling crystal, and 3-8 is a color separating mirror.
Detailed Description
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, a tunable dual-wavelength output slab laser includes a seed optical isolation and shaping module 1, a slab four-way amplification module 2, and a tunable module 3, where transmission optical paths of the seed optical isolation and shaping module 1, the slab four-way amplification module 2, and the tunable module 3 are matched.
Wherein, the seed optical isolation and shaping module 1 comprises a single longitudinal mode laser 1-1, a first shaping mirror 1-3, a second shaping mirror 1-4, a first reflector 1-5 and a second reflector 1-6 which are arranged in sequence, a first isolator 1-2 is arranged between the single longitudinal mode laser 1-1 and the first shaping mirror 1-3, the central points of the single longitudinal mode laser 1-1, the first isolator 1-2, the first shaping mirror 1-3, the second shaping mirror 1-4 and the first reflector 1-5 are arranged on the same horizontal line, the central points of the first reflector 1-5 and the second reflector 1-6 are opposite, the transmission height of the seed light can be controlled by the first reflector 1-5 and the second reflector 1-6, and the seed light is output by the second reflector 1-6 and enters the batten four-way amplification module 2. The single longitudinal mode laser 1-1 mainly has the function of generating circular single longitudinal mode S-shaped linearly polarized light serving as seed light, and the repetition frequency of the seed light is tunable within the range of 200 Hz to 1 kHz. Seed light generated by the single longitudinal mode laser 1-1 sequentially passes through the first isolator 1-2, the first shaping mirror 1-3 and the second shaping mirror 1-4. The primary function of the first isolator 1-2 is to prevent the mirror-reflected beam of the device and the return light of the slab four-way amplification module 2 from damaging the single longitudinal mode laser 1-1. The first shaping mirror 1-3 is a spherical plano-concave cylindrical lens, the second shaping mirror 1-4 is a spherical plano-convex cylindrical lens, and the distance between the first shaping mirror 1-3 and the second shaping mirror 1-4 is 139 and 141 mm. The first shaping mirror 1-3 and the second shaping mirror 1-4 jointly act to shape the seed light round light spot into a rectangular light spot with the size of 2 mm multiplied by 18 mm to match the incident surface of the four-way amplification slab 2 and meet the damage threshold of the end surface of the four-way amplification slab 2. The shaped seed light is reflected by the second mirror 1-6 into the slab four-way magnification module 2.
The slab four-way amplification module 2 comprises a first spatial filter 2-1, a first polaroid 2-3, a slab amplifier 2-4, a first reflection module and a second reflection module, a second isolator 2-2 is arranged between the first spatial filter 2-1 and the first polaroid 2-3, the central points of the first spatial filter 2-1, the second isolator 2-2, the first polaroid 2-3 and the slab amplifier 2-4 are arranged on the same horizontal line, the first reflection module and the second reflection module are matched with a transmission light path of the slab amplifier 2-4, and seed light enters the tunable module 3 after being output by the first polaroid 2-3. The first spatial filter 2-1 comprises a plano-convex lens I and a plano-convex lens II, the distance between the plano-convex lens I and the plano-convex lens II is 1120 mm, and the first spatial filter 2-1 is mainly used for image transmission and filtering, so that distortion-free transmission of seed light is guaranteed. The shaped seed light is output by the first spatial filter 2-1 and then input into the second isolator 2-2, the second isolator 2-2 mainly functions to prevent the return light from entering the single longitudinal mode laser to damage the laser, and then the shaped seed light enters the slab amplifier 2-4 through the first polarizer 2-3 to be amplified in a single pass. The slab amplifier 2-4 is a double-end pump, the input surface of the double-end pump is plated with a 1064 nm high-transmittance film, and the side surface is plated with a 808 nm high-transmittance film and SiO 2 The film is used for preventing evanescent wave loss, and the main function of the 808 nm high-transmittance film is to facilitate the introduction of pump light into the slab amplifier. The first reflection module comprises a third reflector 2-5 and a fourth reflector 2-6, the third reflector 2-5 and the fourth reflector 2-6 correspond to the central point of the fourth reflector 2-6, and the light path is transmitted among the slab amplifier 2-4, the third reflector 2-5 and the fourth reflector 2-6 along a triangular path; the second reflecting module comprises a fifth reflecting mirror 2-7, a sixth reflecting mirror 2-8, a second spatial filter 2-9, a quarter glass slide 2-10 and a zero degree reflecting mirror 2-11, the central points of the slab amplifier 2-4, the fifth reflecting mirror 2-7 and the sixth reflecting mirror 2-8 correspond, and the sixth reflecting mirror 2-8, the second spatial filter 2-9, the quarter glass slide 2-10 and the zero degree reflecting mirror 2-8 correspondThe centre points of the mirrors 2-11 are arranged on the same horizontal line. The amplified seed light is reflected by the third reflector 2-5 and the fourth reflector 2-6 and enters the slab amplifier 2-4 again for two-pass amplification. The seed light after the second-pass amplification enters a second spatial filter 2-9 for spatial filtering and image transmission after being reflected by a fifth reflector 2-7 and a sixth reflector 2-8, so that the light spots of the seed light are not distorted, and the beam quality of the seed light is optimized. The optimized seed light is output by the second spatial filter 2-9, reflected by the zero degree reflector 2-11 after passing through the quarter glass 2-10, and the quarter glass 2-10 is used for changing the polarization state of the laser light, so that the laser light can be reflected and output through the polaroid 2-3 after being amplified in three-way and four-way. The reflected seed light sequentially passes through a quarter glass 2-10, a second spatial filter 2-9, a sixth reflector 2-8 and a fifth reflector 2-7 and then enters a slab amplifier 2-4 again for three-pass amplification. Through the cooperation of the first spatial filter and the second spatial filter, the invention realizes high-quality light beam output. The seed light amplified in the third range is output by the slab amplifier 2-4, reflected by the fourth reflector 2-6 and the third reflector 2-5, enters the slab amplifier 2-4 again for amplification in the fourth range, and is reflected by the first polarizer 2-3 to enter the tunable module 3. Through the slab four-pass amplification module 2, the invention realizes the four-pass amplification of the shaped seed light, effectively improves the power and the beam quality of the seed light, and simultaneously, the slab amplifier 2-4 effectively reduces the influence of the thermal lens effect on the laser.
The tunable module 3 comprises a second polaroid 3-1, a tunable half glass 3-2, a third polaroid 3-3, a first collimating mirror 3-4, a second collimating mirror 3-5 and a frequency doubling system, wherein the central points of the second polaroid 3-1, the tunable half glass 3-2, the third polaroid 3-3, the first collimating mirror 3-4, the second collimating mirror 3-5 and the frequency doubling system are arranged on the same horizontal line. The frequency doubling system comprises a movable bottom plate 3-6, a frequency doubling crystal 3-7 and a color separation mirror 3-8, wherein the frequency doubling crystal 3-7 and the color separation mirror 3-8 are arranged on the movable bottom plate 3-6, and the centers of the frequency doubling crystal 3-7 and the color separation mirror 3-8 are arranged on the same horizontal line. The seed light amplified by the fourth path sequentially comprises a second polaroid 3-1, an adjustable half glass 3-2 and a third polaroid 3-3, wherein the adjustable half glass 3-2 is mainly used for adjusting the polarization angle of the light beam, and the energy of the seed light amplified by the fourth path can be adjusted by matching the adjustable half glass 3-2 with the third polaroid 3-3. The seed light after energy adjustment sequentially enters the first collimating mirror 3-4 and the second collimating mirror 3-5, and the first collimating mirror 3-4 and the second collimating mirror 3-5 mainly act to output laser in a collimating manner so as to realize long-distance transmission of the laser. The collimated seed light enters a frequency doubling system and sequentially passes through a frequency doubling crystal 3-7 and a color separation mirror 3-8, the frequency doubling crystal 3-7 is mainly used for doubling the frequency of the seed light with the wavelength of 1064 nm into seed light with the wavelength of 532nm, and the color separation mirror 3-8 is mainly used for reflecting laser with the wavelength of 1064 nm. In the using process, if the laser needs to output high-power laser with the wavelength of 532nm, the movable bottom plate 3-6 is used for moving the frequency doubling system into the optical path, and if the laser needs to output laser with the wavelength of 1064 nm, the movable bottom plate 3-6 is used for moving the frequency doubling system out of the optical path. According to the invention, the output laser of the laser can be freely switched between the laser with the wavelength of 532nm and the laser with the wavelength of 1064 nm through the frequency doubling system, so that the application scenes of the laser are effectively widened.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A tunable dual-wavelength output slab laser is characterized by comprising a seed optical isolation and shaping module (1), a slab four-way amplification module (2) and a tunable module (3), wherein transmission light paths of the seed optical isolation and shaping module (1), the slab four-way amplification module (2) and the tunable module (3) are matched;
the seed light isolation and shaping module (1) generates seed light, the seed light is shaped into a rectangular light spot matched with the batten four-way amplification module (2), the shaped seed light enters the batten four-way amplification module (2) for amplification, and the amplified seed light enters the adjustable resonance module (3) for wavelength adjustment.
2. The tunable dual wavelength output slab laser as claimed in claim 1, wherein the seed optical isolation and shaping module (1) comprises a single longitudinal mode laser (1-1), a first shaping mirror (1-3), a second shaping mirror (1-4), a first reflector (1-5) and a second reflector (1-6) which are arranged in sequence, the central points of the single longitudinal mode laser (1-1), the first shaping mirror (1-3), the second shaping mirror (1-4) and the first reflector (1-5) are arranged on the same horizontal line, the first reflector (1-5) is opposite to the central point of the second reflector (1-6), and the seed light is output by the second reflector (1-6) to enter the slab four-way amplification module (2).
3. The tunable dual wavelength output slab laser according to claim 2, characterized in that a first isolator (1-2) is provided between the single longitudinal mode laser (1-1) and the first shaping mirror (1-3), and the single longitudinal mode laser (1-1), the first isolator (1-2) and the first shaping mirror (1-3) are arranged on the same horizontal line.
4. A tunable dual wavelength output slab laser according to claim 2 or 3, characterized in that the first shaping mirror (1-3) is a spherical plano-concave cylindrical lens, the second shaping mirror (1-4) is a spherical plano-convex cylindrical lens, and the distance between the first shaping mirror (1-3) and the second shaping mirror (1-4) is 139-141 mm.
5. The tunable dual-wavelength output slab laser according to claim 4, wherein the slab four-way amplification module (2) comprises a first spatial filter (2-1), a first polarizer (2-3), a slab amplifier (2-4), a first reflection module and a second reflection module, the central points of the first spatial filter (2-1), the first polarizer (2-3) and the slab amplifier (2-4) are arranged on the same horizontal line, the first reflection module and the second reflection module are matched with the transmission optical path of the slab amplifier (2-4), and the seed light is output by the first polarizer (2-3) and enters the tunable module (3).
6. The tunable dual wavelength output slab laser according to claim 5, wherein the first reflecting module comprises a third mirror (2-5) and a fourth mirror (2-6), the third mirror (2-5) and the fourth mirror (2-6) corresponding to a fourth mirror (2-6) center point;
the second reflection module comprises a fifth reflector (2-7), a sixth reflector (2-8), a second spatial filter (2-9), a quarter glass (2-10) and a zero reflector (2-11), the central points of the slab amplifier (2-4), the fifth reflector (2-7) and the sixth reflector (2-8) are corresponding, and the central points of the sixth reflector (2-8), the second spatial filter (2-9), the quarter glass (2-10) and the zero reflector (2-11) are arranged on the same horizontal line.
7. A tunable dual wavelength output slab laser according to claim 5 or 6, characterized in that a second isolator (2-2) is provided between the first spatial filter (2-1) and the first polarizer (2-3), the centers of the first spatial filter (2-1), the second isolator (2-2) and the first polarizer (2-3) are arranged on the same horizontal line, the first spatial filter (2-1) comprises a plano-convex lens I and a plano-convex lens II, and the distance between the plano-convex lens I and the plano-convex lens II is 1120 mm.
8. The tunable dual wavelength output slab laser according to claim 7, wherein the slab amplifiers (2-4) are double-end pumped, the input face of the double-end pump is coated with a 1064 nm high-transmittance film, the side face is coated with a SiO2 film, and a layer of 808 nm high-transmittance film is coated on a SiO2 film.
9. The tunable dual wavelength output slab laser according to any one of claims 1 or 8, wherein the tunable module (3) comprises a second polarizer (3-1), a tunable half glass (3-2), a third polarizer (3-3), a first collimating mirror (3-4), a second collimating mirror (3-5) and a frequency doubling system, and the central points of the second polarizer (3-1), the tunable half glass (3-2), the third polarizer (3-3), the first collimating mirror (3-4), the second collimating mirror (3-5) and the frequency doubling system are arranged on the same horizontal line.
10. The tunable dual wavelength output slab laser according to claim 9, wherein the frequency doubling system comprises a movable base (3-6), a frequency doubling crystal (3-7) and a color separation mirror (3-8), the frequency doubling crystal (3-7) and the color separation mirror (3-8) being arranged on the movable base (3-6), and centers of the second collimating mirror (3-5), the frequency doubling crystal (3-7) and the color separation mirror (3-8) being arranged on the same horizontal line.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498257A (en) * | 2021-12-09 | 2022-05-13 | 中国电子科技集团公司第五十三研究所 | Four-stroke batten laser amplification system |
| CN117277033A (en) * | 2023-11-17 | 2023-12-22 | 中国工程物理研究院应用电子学研究所 | Panel gain module based on surface pumping multi-angle gating and high-energy laser device |
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2022
- 2022-07-12 CN CN202210816150.4A patent/CN114976843A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498257A (en) * | 2021-12-09 | 2022-05-13 | 中国电子科技集团公司第五十三研究所 | Four-stroke batten laser amplification system |
| CN117277033A (en) * | 2023-11-17 | 2023-12-22 | 中国工程物理研究院应用电子学研究所 | Panel gain module based on surface pumping multi-angle gating and high-energy laser device |
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