CN110768092A - A laser regenerative amplifier based on acousto-optic effect - Google Patents
A laser regenerative amplifier based on acousto-optic effect Download PDFInfo
- Publication number
- CN110768092A CN110768092A CN201911028348.0A CN201911028348A CN110768092A CN 110768092 A CN110768092 A CN 110768092A CN 201911028348 A CN201911028348 A CN 201911028348A CN 110768092 A CN110768092 A CN 110768092A
- Authority
- CN
- China
- Prior art keywords
- optical
- cavity
- acousto
- laser
- splitter
- 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.)
- Granted
Links
- 230000000694 effects Effects 0.000 title claims abstract description 30
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 339
- 230000003321 amplification Effects 0.000 claims abstract description 60
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 60
- 230000008929 regeneration Effects 0.000 claims abstract description 49
- 238000011069 regeneration method Methods 0.000 claims abstract description 49
- 230000010287 polarization Effects 0.000 claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 229910052714 tellurium Inorganic materials 0.000 claims description 63
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical group [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 63
- 239000013078 crystal Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008207 working material Substances 0.000 description 1
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
- H01S3/10—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
-
- 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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
- H01S3/0813—Configuration of resonator
- H01S3/0815—Configuration of resonator having 3 reflectors, e.g. V-shaped resonators
-
- 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
- H01S3/1024—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 for pulse generation
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
技术领域technical field
本发明属于激光再生放大领域，更具体地，涉及一种基于声光效应的激光再生放大器。The invention belongs to the field of laser regeneration and amplification, and more particularly, relates to a laser regeneration amplifier based on acousto-optic effect.
背景技术Background technique
1985年出现的啁啾脉冲放大技术，提高了激光脉冲峰值功率，激光进入高强度发展阶段，超短脉冲，高能量激光是现在强物理场的重要光源，再生放大技术是实现超短脉冲高能量输出的必要手段。The chirped pulse amplification technology that appeared in 1985 has improved the peak power of laser pulses, and the laser has entered a stage of high-intensity development. Ultra-short pulses, high-energy lasers are now an important light source for strong physical fields, and regenerative amplification technology is to achieve ultra-short pulses with high energy. necessary means of output.
再生放大技术可以采用电光效应或者声光效应控制光脉冲的入腔与出腔，电光效应速度更快，但施加电压很高，目前低电压电光效应阈值较低，仍然处于研究阶段；声光效应相比于电光效应速度较慢，但所加电压不必太高。The regenerative amplification technology can use electro-optic effect or acousto-optic effect to control the entry and exit of optical pulses. The electro-optic effect is faster, but the applied voltage is very high. At present, the threshold of low-voltage electro-optic effect is low, and it is still in the research stage; acousto-optic effect Compared with the electro-optic effect, the speed is slower, but the applied voltage does not have to be too high.
在再生放大领域，光脉冲入腔后往返多次，实现多次能量放大，脉冲放大到一定程度时，通过电光效应或声光效应控制，脉冲出腔完成再生放大过程。但在一定条件下，光脉冲放大存在饱和情况，且重复频率越高时，饱和越快，单脉冲能量无法达到很高。In the field of regenerative amplification, the optical pulse goes back and forth several times after entering the cavity to achieve multiple energy amplification. When the pulse is amplified to a certain level, the pulse is controlled by the electro-optic effect or the acousto-optic effect, and the pulse exits the cavity to complete the regeneration and amplification process. However, under certain conditions, there is saturation in optical pulse amplification, and the higher the repetition frequency, the faster the saturation, and the single-pulse energy cannot reach very high.
同时，在再生放大领域，为了防止光脉冲出腔时原路返回对元器件造成损伤，解决该问题的方法目前主要有两个，方法一，在进入离开腔体的光路上添加必要偏振隔离元件以及偏振控制元件，使得脉冲出腔时，控制偏振态与入腔时不同，通过偏振隔离元件时无法原路返回；方法二，在激光再生放大腔体中加入两个电光效应或声光效应装置，光脉冲从装置一中入腔，从装置二中出腔，入腔与出腔的光路不同防止光路原路返回。两种方式都增加了器件的复杂度，方法二同时增加了脉冲入腔/出腔控制难度。At the same time, in the field of regenerative amplification, in order to prevent damage to components caused by the return of the optical pulse out of the cavity, there are currently two main methods to solve this problem. The first method is to add necessary polarization isolation elements on the optical path entering and leaving the cavity. and a polarization control element, so that when the pulse leaves the cavity, the control polarization state is different from that when it enters the cavity, and it cannot return to the original path when passing through the polarization isolation element;
发明内容SUMMARY OF THE INVENTION
针对现有技术的缺陷，本发明的目的在于提供一种基于声光效应的激光再生放大器，旨在解决现有的再生放大方法为了防止光脉冲原路返回而增加器件复杂度的问题。Aiming at the defects of the prior art, the purpose of the present invention is to provide a laser regeneration amplifier based on acousto-optic effect, which aims to solve the problem that the existing regeneration and amplification method increases the complexity of the device in order to prevent the optical pulse from returning to the original path.
为实现上述目的，本发明提供了一种基于声光效应的激光再生放大器，包括：激光再生放大腔体、声光合束/分束器、任意波形信号发生器、第一激光工作模块和第二激光工作模块；In order to achieve the above purpose, the present invention provides a laser regeneration amplifier based on acousto-optic effect, comprising: a laser regeneration amplifier cavity, an acousto-optic beam combiner/beam splitter, an arbitrary waveform signal generator, a first laser working module and a second laser working module. Laser working module;
工作状态下，任意波形信号发生器将第一声波和第二声波加载在声光合束/分束器后，光束经过声光合束/分束器发生声光相互作用形成“Y”字型光路；激光再生放大腔体包括第一反射镜，第二反射镜和第三反射镜，“Y”字型光路包括腔体光干路、第一光支路和第二光支路；激光再生放大腔体的第一反射镜位于腔体光干路的一端，第二反射镜位于第一光支路的另一端；第三反射镜位于第二光支路的另一端；第一光支路的一端、第二光支路的一端和腔体光干路的另一端构成节点；声光合束/分束器位于节点处；声光合束/分束器与第二反射镜之间的距离和声光合束/分束器与第三反射镜之间的距离相等；第一激光工作模块位于声光合束/分束器与第二反射镜之间；第二激光工作模块位于声光合束/分束器与第三反射镜之间；In the working state, the arbitrary waveform signal generator loads the first acoustic wave and the second acoustic wave on the acousto-optic beam combiner/beam splitter, and the beam passes through the acousto-optic beam combiner/beam splitter to generate acousto-optic interaction to form a "Y"-shaped optical path. ; The laser regeneration and amplification cavity includes a first reflection mirror, a second reflection mirror and a third reflection mirror, and the "Y"-shaped optical path includes the cavity optical trunk, the first optical branch and the second optical branch; the laser regeneration and amplification The first reflection mirror of the cavity is located at one end of the optical trunk of the cavity, the second reflection mirror is located at the other end of the first optical branch; the third reflection mirror is located at the other end of the second optical branch; One end, one end of the second optical branch and the other end of the cavity optical trunk form a node; the acousto-optic beam combiner/beam splitter is located at the node; the distance between the acousto-optic beam combiner/beam splitter and the second mirror and the acoustic The distance between the optical beam combiner/beam splitter and the third mirror is equal; the first laser working module is located between the acousto-optic beam combiner/beam splitter and the second mirror; the second laser working module is located between the acousto-optic beam combiner/beam splitter between the reflector and the third reflector;
激光再生放大腔体用于通过提供激光往返路径实现激光放大；声光合束/分束器加载声波，光束经过声光合束/分束器与声波发生声光作用，实现合束或分束；任意波形信号发生器用于将第一频率或第二频率的声波加载在声光合束/分束器上，控制光束的传输方向；第一激光工作模块和第二激光工作模块用于对光束增益放大；The laser regeneration amplifier cavity is used to realize laser amplification by providing a round-trip path for the laser; the acousto-optic beam combiner/beam splitter loads the acoustic wave, and the beam passes through the acousto-optic beam combiner/beam splitter to have acousto-optic effect with the sound wave to realize beam combining or beam splitting; any The waveform signal generator is used to load the acoustic wave of the first frequency or the second frequency on the acousto-optic beam combiner/beam splitter to control the transmission direction of the beam; the first laser working module and the second laser working module are used to amplify the beam gain;
其中，在腔体光干路上传输的光束具有声光合束/分束器件的e偏振态；在第一光支路和第二光支路上传输的光束具有声光合束/分束器件的o偏振态。Among them, the light beam transmitted on the cavity optical trunk has the e-polarization state of the acousto-optic beam combining/beam splitting device; the light beam transmitted on the first optical branch and the second optical branch has the o polarization state of the acousto-optic beam combining/beam splitting device state.
优选地，基于声光效应的激光再生放大器还包括偏振控制器，放置于腔体光干路；或腔体光干路、第一光支路和第二光支路；或第一光支路和第二光支路；放置于所述腔体光干路的偏振控制器用于透过具有声光合束/分束器的e偏振态的光束；放置于所述腔体光支路的偏振控制器用于透过具有声光合束/分束器的o偏振态的光束。Preferably, the laser regenerative amplifier based on the acousto-optic effect further includes a polarization controller, which is placed on the cavity optical trunk; or the cavity optical trunk, the first optical branch and the second optical branch; or the first optical branch and the second optical branch; the polarization controller placed in the cavity optical trunk is used to transmit the light beam of the e-polarization state with the acousto-optic beam combiner/beam splitter; the polarization control placed in the cavity optical branch The o-polarizer is used to transmit light beams of o polarization state with acousto-optical combiners/splitters.
优选地，任意波形信号发生器加载第一频率声波和第二频率声波时，具有声光合束/分束器e偏振态的光束进入腔体光干路，经声光合束/分束器后产生偏转角不同的两束具有声光合束/分束器o偏振态衍射光分别进入第一光支路和第二光支路，实现分束。Preferably, when the arbitrary waveform signal generator is loaded with the sound wave of the first frequency and the sound wave of the second frequency, the light beam with the e-polarization state of the acousto-optic beam combiner/beam splitter enters the cavity optical trunk path, and is generated by the acousto-optic beam combiner/beam splitter The two beams with different deflection angles have acousto-optic beam combiner/beam splitter o polarization state diffracted light respectively enter the first optical branch and the second optical branch to realize beam splitting.
优选地，任意波形信号发生器加载第一频率声波和第二频率声波时，具有声光合束/分束器o偏振态的两光束分别进入第一光支路和第二光支路，经声光合束/分束器后，在腔体光干路上形成一束具有声光合束/分束器e偏振态的光束，实现合束。Preferably, when the arbitrary waveform signal generator is loaded with the first frequency sound wave and the second frequency sound wave, the two light beams with the acousto-optic beam combiner/beam splitter o polarization state enter the first optical branch and the second optical branch respectively, After the optical beam combiner/beam splitter, a beam with the e-polarization state of the acousto-optic beam combiner/beam splitter is formed on the optical trunk path of the cavity to realize beam combining.
优选地，任意波形信号发生器加载第一频率声波时，进入第一光支路的具有声光合束/分束器o偏振态的光束，经过声光合束/分束器发生偏转，形成具有声光合束/分束器e偏振态的光束进入腔体光干路。Preferably, when the arbitrary waveform signal generator is loaded with the sound wave of the first frequency, the light beam with the polarization state of the acousto-optic beam combiner/beam splitter entering the first optical branch is deflected through the acousto-optic beam combiner/beam splitter to form an acoustic-optic beam combiner/beam splitter. The beam of the e-polarization state of the optical combiner/beam splitter enters the cavity optical trunk.
优选地，具有声光合束/分束器o偏振态光束进入腔体光干路，声光合束/分束器交替加载第一频率和第二频率的声波，经声光合束/分束器的光束交替进入第一光支路和第二光支路。Preferably, there is an acousto-optic beam combiner/beam splitter o-polarized light beam enters the cavity optical trunk, the acousto-optic beam combiner/beam splitter alternately loads the acoustic waves of the first frequency and the second frequency, and the acousto-optic beam combiner/beam splitter The light beams alternately enter the first optical branch and the second optical branch.
优选地，具有声光合束/分束器o偏振态光束进入腔体光干路，同时加载在声光合束/分束器上的第一频率和第二频率的声波功率不相等时，进入第一光支路的光束与进入第二光支路的光束能量占比不同。Preferably, the o-polarized light beam with the acousto-optic beam combiner/beam splitter enters the cavity optical trunk, and when the acoustic wave power of the first frequency and the second frequency loaded on the acousto-optic beam combiner/beam splitter are not equal, it enters the first frequency and the second frequency. The energy ratio of the light beam of one optical branch is different from that of the light beam entering the second optical branch.
优选地，偏振控制器为布鲁斯特片。Preferably, the polarization controller is a Brewster plate.
优选地，声光合束/分束器为氧化碲晶体。Preferably, the acousto-optic beam combiner/beam splitter is a tellurium oxide crystal.
通过本发明所构思的以上技术方案，与现有技术相比，能够取得以下有益效果：Through the above technical solutions conceived by the present invention, compared with the prior art, the following beneficial effects can be achieved:
(1)本发明提供的基于声光效应的激光再生放大器，具有三个脉冲输入输出端口，根据控制声光合束/分束器上加载特定频率的声波，可以实现不同的端口输入与输出，功能实现灵活多变，且解决了现有再生放大器外部需设置偏振控制器以防止光脉冲原路返回的问题。(1) The laser regeneration amplifier based on the acousto-optic effect provided by the present invention has three pulse input and output ports. According to the control of the acousto-optic beam combiner/beam splitter to load a sound wave of a specific frequency, different port input and output can be realized. The implementation is flexible and changeable, and solves the problem that a polarization controller needs to be set outside the existing regenerative amplifier to prevent the optical pulse from returning to the original path.
(2)本发明利用声光合束/分束器，光脉冲能量可分离至第一光支路和第二光支路中各自进行再生放大，输出时再将两支路光脉冲合为一个光脉冲，整个过程相当于实现了在高重复频率的条件下提升了光脉冲的作用。(2) The present invention utilizes an acousto-optic beam combiner/beam splitter, and the optical pulse energy can be separated into the first optical branch and the second optical branch for regeneration and amplification respectively, and then the two branch optical pulses are combined into one light when outputting The whole process is equivalent to realizing the effect of improving the light pulse under the condition of high repetition rate.
附图说明Description of drawings
图1是实施例1提供的一种基于声光效应的光脉冲再生放大器；Fig. 1 is a kind of optical pulse regeneration amplifier based on acousto-optic effect provided by embodiment 1;
图2是实施例2提供的一种基于声光效应的光脉冲再生放大器；Fig. 2 is a kind of optical pulse regeneration amplifier based on acousto-optic effect provided by
图3是实施例3提供的一种基于声光效应的光脉冲再生放大器。FIG. 3 is an optical pulse regeneration amplifier based on acousto-optic effect provided in
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
本发明提供了一种基于声光效应的激光再生放大器，包括：激光再生放大腔体、声光合束/分束器、任意波形信号发生器、第一激光工作模块和第二激光工作模块；The invention provides a laser regeneration amplifier based on acousto-optic effect, comprising: a laser regeneration amplifier cavity, an acousto-optic beam combiner/beam splitter, an arbitrary waveform signal generator, a first laser working module and a second laser working module;
工作状态下，任意波形信号发生器将第一声波和第二声波加载在声光合束/分束器后，光束经过声光合束/分束器发生声光相互作用形成“Y”字型光路；激光再生放大腔体包括第一反射镜，第二反射镜和第三反射镜，“Y”字型光路包括腔体光干路、第一光支路和第二光支路；激光再生放大腔体的第一反射镜位于腔体光干路的一端，第二反射镜位于第一光支路的另一端；第三反射镜位于第二光支路的另一端；第一光支路的一端、第二光支路的一端和腔体光干路的另一端构成节点；声光合束/分束器位于节点处；声光合束/分束器与第二反射镜之间的距离和声光合束/分束器与第三反射镜之间的距离相等；第一激光工作模块位于声光合束/分束器与第二反射镜之间；第二激光工作模块位于声光合束/分束器与第三反射镜之间；In the working state, the arbitrary waveform signal generator loads the first acoustic wave and the second acoustic wave on the acousto-optic beam combiner/beam splitter, and the beam passes through the acousto-optic beam combiner/beam splitter to generate acousto-optic interaction to form a "Y"-shaped optical path. ; The laser regeneration and amplification cavity includes a first reflection mirror, a second reflection mirror and a third reflection mirror, and the "Y"-shaped optical path includes the cavity optical trunk, the first optical branch and the second optical branch; the laser regeneration and amplification The first reflection mirror of the cavity is located at one end of the optical trunk of the cavity, the second reflection mirror is located at the other end of the first optical branch; the third reflection mirror is located at the other end of the second optical branch; One end, one end of the second optical branch and the other end of the cavity optical trunk form a node; the acousto-optic beam combiner/beam splitter is located at the node; the distance between the acousto-optic beam combiner/beam splitter and the second mirror and the acoustic The distance between the optical beam combiner/beam splitter and the third mirror is equal; the first laser working module is located between the acousto-optic beam combiner/beam splitter and the second mirror; the second laser working module is located between the acousto-optic beam combiner/beam splitter between the reflector and the third reflector;
激光再生放大腔体用于通过提供激光往返路径实现激光放大；声光合束/分束器加载声波，光束经过声光合束/分束器与声波发生声光作用，实现合束或分束；任意波形信号发生器用于将第一频率或第二频率的声波加载在声光合束/分束器上，控制光束的传输方向；第一激光工作模块和第二激光工作模块用于对光束增益放大；The laser regeneration amplifier cavity is used to realize laser amplification by providing a round-trip path for the laser; the acousto-optic beam combiner/beam splitter loads the acoustic wave, and the beam passes through the acousto-optic beam combiner/beam splitter to have acousto-optic effect with the sound wave to realize beam combining or beam splitting; any The waveform signal generator is used to load the acoustic wave of the first frequency or the second frequency on the acousto-optic beam combiner/beam splitter to control the transmission direction of the beam; the first laser working module and the second laser working module are used to amplify the beam gain;
其中，在腔体光干路上传输的光束具有声光合束/分束器件的e偏振态；在第一光支路和第二光支路上传输的光束具有声光合束/分束器件的o偏振态。Among them, the light beam transmitted on the cavity optical trunk has the e-polarization state of the acousto-optic beam combining/beam splitting device; the light beam transmitted on the first optical branch and the second optical branch has the o polarization state of the acousto-optic beam combining/beam splitting device state.
优选地，基于声光效应的激光再生放大器还包括偏振控制器，放置于腔体光干路；或腔体光干路、第一光支路和第二光支路；或第一光支路和第二光支路；放置于所述腔体光干路的偏振控制器用于透过具有声光合束/分束器的e偏振态的光束；放置于所述腔体光支路的偏振控制器用于透过具有声光合束/分束器的o偏振态的光束。Preferably, the laser regenerative amplifier based on the acousto-optic effect further includes a polarization controller, which is placed on the cavity optical trunk; or the cavity optical trunk, the first optical branch and the second optical branch; or the first optical branch and the second optical branch; the polarization controller placed in the cavity optical trunk is used to transmit the light beam of the e-polarization state with the acousto-optic beam combiner/beam splitter; the polarization control placed in the cavity optical branch The o-polarizer is used to transmit light beams of o polarization state with acousto-optical combiners/splitters.
优选地，任意波形信号发生器加载第一频率声波和第二频率声波时，具有声光合束/分束器e偏振态的光束进入腔体光干路，经声光合束/分束器后产生偏转角不同的两束具有声光合束/分束器o偏振态衍射光分别进入第一光支路和第二光支路，实现分束。Preferably, when the arbitrary waveform signal generator is loaded with the sound wave of the first frequency and the sound wave of the second frequency, the light beam with the e-polarization state of the acousto-optic beam combiner/beam splitter enters the cavity optical trunk path, and is generated by the acousto-optic beam combiner/beam splitter The two beams with different deflection angles have acousto-optic beam combiner/beam splitter o polarization state diffracted light respectively enter the first optical branch and the second optical branch to realize beam splitting.
优选地，任意波形信号发生器加载第一频率声波和第二频率声波时，具有声光合束/分束器o偏振态的两光束分别进入第一光支路和第二光支路，经声光合束/分束器后，在腔体光干路上形成一束具有声光合束/分束器e偏振态的光束，实现合束。Preferably, when the arbitrary waveform signal generator is loaded with the first frequency sound wave and the second frequency sound wave, the two light beams with the acousto-optic beam combiner/beam splitter o polarization state enter the first optical branch and the second optical branch respectively, After the optical beam combiner/beam splitter, a beam with the e-polarization state of the acousto-optic beam combiner/beam splitter is formed on the optical trunk path of the cavity to realize beam combining.
优选地，任意波形信号发生器加载第一频率声波时，进入第一光支路的具有声光合束/分束器o偏振态的光束，经过声光合束/分束器发生偏转，形成具有声光合束/分束器e偏振态的光束进入腔体光干路。Preferably, when the arbitrary waveform signal generator is loaded with the sound wave of the first frequency, the light beam with the polarization state of the acousto-optic beam combiner/beam splitter entering the first optical branch is deflected through the acousto-optic beam combiner/beam splitter to form an acoustic-optic beam combiner/beam splitter. The beam of the e-polarization state of the optical combiner/beam splitter enters the cavity optical trunk.
优选地，具有声光合束/分束器o偏振态光束进入腔体光干路，声光合束/分束器交替加载第一频率和第二频率的声波，经声光合束/分束器的光束交替进入第一光支路和第二光支路。Preferably, there is an acousto-optic beam combiner/beam splitter o-polarized light beam enters the cavity optical trunk, the acousto-optic beam combiner/beam splitter alternately loads the acoustic waves of the first frequency and the second frequency, and the acousto-optic beam combiner/beam splitter The light beams alternately enter the first optical branch and the second optical branch.
优选地，具有声光合束/分束器o偏振态光束进入腔体光干路，同时加载在声光合束/分束器上的第一频率和第二频率的声波功率不相等时，进入第一光支路的光束与进入第二光支路的光束能量占比不同。Preferably, the o-polarized light beam with the acousto-optic beam combiner/beam splitter enters the cavity optical trunk, and when the acoustic wave power of the first frequency and the second frequency loaded on the acousto-optic beam combiner/beam splitter are not equal, it enters the first frequency and the second frequency. The energy ratio of the light beam of one optical branch is different from that of the light beam entering the second optical branch.
优选地，偏振控制器为布鲁斯特片。Preferably, the polarization controller is a Brewster plate.
优选地，声光合束/分束器为氧化碲晶体。Preferably, the acousto-optic beam combiner/beam splitter is a tellurium oxide crystal.
实施例1Example 1
图1为实施例1提出的一种基于声光效应的光脉冲再生放大器，包括激光再生放大腔体，氧化碲声光合束/分束器，布鲁斯特偏振片，Nd:YAG激光工作物质；Fig. 1 is a kind of optical pulse regeneration amplifier based on acousto-optic effect proposed in embodiment 1, including laser regeneration amplifying cavity, tellurium oxide acousto-optic beam combiner/beam splitter, Brewster polarizer, Nd:YAG laser working substance;
其中，①为全反镜；②为声光合束/分束器；③为任意波形信号发生器；④为布鲁斯特偏振片(第一光支路，第二光支路均放置)；⑤为Nd:YAG激光工作物质(第一光支路，第二光支路均放置)；⑥为全反镜(第一光支路，第二光支路均放置)；Among them, ① is a total reflection mirror; ② is acousto-optic beam combiner/beam splitter; ③ is an arbitrary waveform signal generator; ④ is Brewster polarizer (the first optical branch and the second optical branch are placed); ⑤ is Nd:YAG laser working substance (the first optical branch and the second optical branch are placed); ⑥ is a total reflection mirror (the first optical branch and the second optical branch are placed);
激光再生放大腔体基本结构为“Y”字型，即光束进入激光再生放大腔体后存在腔体光干路，第一光支路和第二光支路三个部分，第一光支路和第二光支路的相同长度以实现分束光脉冲的同步放大；三个光路的夹角由声光合束/分束器件工作状态决定，构成激光谐振腔体所用的均为全反镜；The basic structure of the laser regeneration and amplification cavity is a "Y" shape, that is, after the light beam enters the laser regeneration and amplification cavity, there is a cavity optical trunk, the first optical branch and the second optical branch three parts, the first optical branch The same length as the second optical branch to achieve synchronous amplification of the split light pulse; the included angle of the three optical paths is determined by the working state of the acousto-optic beam combining/beam splitting device, and all mirrors are used to form the laser resonant cavity;
氧化碲声光合束/分束器位于激光腔体“Y”字型节点的位置；The tellurium oxide acousto-optic beam combiner/beam splitter is located at the "Y"-shaped node of the laser cavity;
布鲁斯特片位于第一光支路和第二光支路，且允许透过的光束为氧化碲声光合束/分束器o偏振态的光束；The Brewster plate is located in the first optical branch and the second optical branch, and the light beam allowed to pass through is the light beam of the o polarization state of the tellurium oxide acousto-optic beam combiner/beam splitter;
进一步地，布鲁斯特片也可位于腔体光干路，允许透过的光束为氧化碲声光合束/分束器的e偏振态的光束；Further, the Brewster plate can also be located in the optical trunk path of the cavity, allowing the transmitted light beam to be the light beam of the e-polarization state of the tellurium oxide acousto-optic beam combiner/beam splitter;
进一步地，布鲁斯特片可位于腔体光干路的光束侧的外部，允许透过的光束为氧化碲声光合束/分束器e偏振态的光束；Further, the Brewster plate can be located outside the beam side of the cavity optical trunk, allowing the transmitted beam to be the beam of the e-polarization state of the tellurium oxide acousto-optic beam combiner/beam splitter;
Nd:YAG激光工作物质位于第一光支路和第二光支路，激光工作物质相同以保证同步放大；The Nd:YAG laser working substance is located in the first optical branch and the second optical branch, and the laser working substance is the same to ensure synchronous amplification;
此时激光再生放大腔体存在三个端口，腔体光干路入腔端口1，第一光支路出腔端口2和第二光支路出腔端口3；At this time, there are three ports in the laser regeneration and amplification cavity, the cavity optical trunk path enters the cavity port 1, the first optical branch exits the
脉冲入腔状态时，氧化碲声光合束/分束器处于未工作状态，不加载频率声波，光脉冲经过氧化碲声光合束/分束器不发生偏转，进入激光再生放大腔体光干路，且光脉冲为氧化碲晶体的e偏振光；When the pulse enters the cavity, the tellurium oxide acousto-optical beam combiner/beam splitter is not working, and the frequency acoustic wave is not loaded. The optical pulse passes through the tellurium oxide acousto-optical beam combiner/beam splitter without being deflected, and enters the optical trunk circuit of the laser regeneration and amplification cavity. , and the light pulse is e-polarized light of tellurium oxide crystal;
脉冲进入腔体后，进入脉冲放大状态，氧化碲声光合束/分束器加载第一频率f1以及第二频率f2的声波，光脉冲经腔体光干路侧全反镜反射后经过氧化碲声光合束/分束器，实现光脉冲能量的平分，一部分能量光脉冲进入第一光支路，另一部分能量光脉冲进入第二光支路，两部分光脉冲分别在各自光支路上与Nd:YAG激光工作物质相互作用实现能量放大，当光脉冲再次通过氧化碲声光合束/分束器时，光脉冲合束，完成一次往返，多次往返实现再生放大；After the pulse enters the cavity, it enters the pulse amplification state, and the tellurium oxide acousto-optical beam combiner/beam splitter loads the acoustic waves of the first frequency f 1 and the second frequency f 2 , and the optical pulse is reflected by the total reflection mirror on the optical trunk side of the cavity and passes through The tellurium oxide acousto-optic beam combiner/beam splitter realizes the equal division of the optical pulse energy, a part of the energy optical pulse enters the first optical branch, the other part of the energy optical pulse enters the second optical branch, and the two parts of the optical pulse are respectively on their respective optical branches. It interacts with the Nd:YAG laser working material to achieve energy amplification. When the optical pulse passes through the tellurium oxide acousto-optic beam combiner/beam splitter again, the optical pulse is combined to complete one round trip, and multiple round trips achieve regeneration and amplification;
当光脉冲能量放大到一定程度，进入光脉冲出腔状态，光脉冲进入腔体光干路，氧化碲声光合束/分束器仅仅加载第一频率f1的声波，光脉冲经腔体光干路侧的全反镜反射后再次经过氧化碲声光合束/分束器时，光脉冲全部偏转到第一光支路传输，光脉冲经过第一光支路侧的平面反射镜后再次通过氧化碲声光合束/分束器，此时氧化碲声光合束/分束器为未工作转态，不加载声波，光脉冲通过氧化碲声光合束/分束器不产生偏转，实现光脉冲从第一光支路端口2输出；When the energy of the optical pulse is amplified to a certain extent, it enters the state of the optical pulse exiting the cavity, and the optical pulse enters the optical trunk circuit of the cavity. When the total reflection mirror on the main road side passes through the tellurium oxide acousto-optical beam combiner/beam splitter again, the light pulses are all deflected to the first optical branch for transmission, and the light pulses pass through the plane mirror on the first optical branch side and pass through again. Tellurium oxide acousto-optic beam combiner/beam splitter, at this time, the tellurium oxide acousto-optic beam combiner/beam splitter is in a non-working state, no sound wave is loaded, and the optical pulse passes through the tellurium oxide acousto-optic beam combiner/beam splitter without deflection, realizing the optical pulse output from the first
进一步地，在光脉冲放大状态时，氧化碲声光合束/分束器件加载第一频率f1以及第二频率f2的声波，两个频率声波功率不相同，从而控制进入腔体各支路的能量占比，实现光脉冲能量的分配；Further, when the optical pulse is amplified, the tellurium oxide acousto-optical beam combining/beam splitting device is loaded with sound waves of the first frequency f 1 and the second frequency f 2 , and the powers of the two frequencies of the sound waves are different, so as to control each branch entering the cavity. The energy ratio of , realizes the distribution of light pulse energy;
进一步地，在光脉冲放大状态时，光脉冲每次往返放大进入腔体光干路时，声光合束/分束器交替加载第一频率f1，第二频率f2的声波，以实现光脉冲交替进入第一光支路和第二光支路，为两条支路的激光工作物质的泵浦提供充足的时间；Further, in the optical pulse amplification state, each time the optical pulse is amplified back and forth into the cavity optical trunk, the acousto-optic beam combiner/beam splitter alternately loads the acoustic waves of the first frequency f 1 and the second frequency f 2 to realize the optical The pulses alternately enter the first optical branch and the second optical branch, providing sufficient time for the pumping of the laser working substances of the two branches;
可选择地，在光脉冲出腔状态时，光脉冲进入腔体光干路，此时氧化碲声光合束/分束器仅仅加载第一频率f2的声波，光脉冲经光干路全反镜反射后再次经过氧化碲声光合束/分束器时，光脉冲全部偏转到第二光支路传输，光脉冲经过第二光支路全反镜反射后再次通过氧化碲声光合束/分束器，此时氧化碲声光合束/分束器为未工作转态，不加载声波，光脉冲通过氧化碲声光合束/分束器不产生偏转，实现光脉冲从第二光支路端口3输出。Optionally, when the optical pulse exits the cavity, the optical pulse enters the cavity optical trunk, and the tellurium oxide acousto-optical beam combiner/beam splitter only loads the acoustic wave of the first frequency f 2 , and the optical pulse is fully reflected by the optical trunk. After mirror reflection, when it passes through the tellurium oxide acousto-optic beam combiner/beam splitter again, the light pulses are all deflected to the second optical branch for transmission. At this time, the tellurium oxide acousto-optical beam combiner/beam splitter is in a non-working state, and no sound wave is loaded, and the optical pulse passes through the tellurium oxide acousto-optical beam combiner/beam splitter without deflection, so that the optical pulse is transmitted from the second optical branch port. 3 outputs.
实施例2Example 2
图2为实施例2提供的一种基于声光效应的光脉冲再生放大器，包括激光再生放大腔体，氧化碲声光合束/分束器，布鲁斯特偏振片，Nd:YAG激光工作物质；Fig. 2 is a kind of optical pulse regeneration amplifier based on acousto-optic effect provided by
其中，①为全反镜；②为声光合束/分束器；③为任意波形信号发生器；④为布鲁斯特偏振片(第一光支路，第二光支路均放置)；⑤为Nd:YAG激光工作物质(第一光支路，第二光支路均放置)；⑥为全反镜(第一光支路，第二光支路均放置)；Among them, ① is a total reflection mirror; ② is acousto-optic beam combiner/beam splitter; ③ is an arbitrary waveform signal generator; ④ is Brewster polarizer (the first optical branch and the second optical branch are placed); ⑤ is Nd:YAG laser working substance (the first optical branch and the second optical branch are placed); ⑥ is a total reflection mirror (the first optical branch and the second optical branch are placed);
激光再生放大腔体基本结构为“Y”字型，即光束进入激光再生放大腔体后存在腔体光干路，第一光支路和第二光支路三个部分，第一光支路和第二光支路的相同长度以实现分束光脉冲的同步放大；三个光路的夹角由声光合束/分束器件工作状态决定，构成激光谐振腔体所用的均为全反镜；The basic structure of the laser regeneration and amplification cavity is a "Y" shape, that is, after the light beam enters the laser regeneration and amplification cavity, there is a cavity optical trunk, the first optical branch and the second optical branch three parts, the first optical branch The same length as the second optical branch to achieve synchronous amplification of the split light pulse; the included angle of the three optical paths is determined by the working state of the acousto-optic beam combining/beam splitting device, and all mirrors are used to form the laser resonant cavity;
氧化碲声光合束/分束器位于激光腔体“Y”字型节点的位置；The tellurium oxide acousto-optic beam combiner/beam splitter is located at the "Y"-shaped node of the laser cavity;
布鲁斯特片位于第一光支路和第二光支路，且允许透过的光束为氧化碲声光合束/分束器o偏振态的光束；The Brewster sheet is located in the first optical branch and the second optical branch, and the light beam allowed to pass through is the light beam of the o-polarization state of the tellurium oxide acousto-optic beam combiner/beam splitter;
进一步地，布鲁斯特片也可位于腔体光干路，允许透过的光束为氧化碲声光合束/分束器的e偏振态的光束；Further, the Brewster plate can also be located in the optical trunk path of the cavity, allowing the transmitted light beam to be the light beam of the e-polarization state of the tellurium oxide acousto-optic beam combiner/beam splitter;
进一步地，布鲁斯特片可位于第一光支路端口2的外部，允许透过的光束为氧化碲声光合束/分束器o偏振态的光束；Further, the Brewster plate can be located outside the first
Nd:YAG激光工作物质位于第一光支路和第二光支路，激光工作物质相同以保证同步放大；The Nd:YAG laser working substance is located in the first optical branch and the second optical branch, and the laser working substance is the same to ensure synchronous amplification;
此时激光再生放大腔体存在三个端口，腔体光干路出腔端口1，第一光支路入腔端口2和第二光支路出腔端口3；At this time, the laser regeneration and amplification cavity has three ports, the cavity optical trunk outgoing port 1, the first optical branch
光脉冲入腔状态时，氧化碲声光合束/分束器处于未工作状态，不加载频率声波，此时光脉冲从第一光支路端口2经过氧化碲声光合束/分束器不发生偏转，进入激光再生放大腔体第一光支路，且脉冲偏振为氧化碲晶体的o光，当光脉冲经过第一光支路侧的全反镜反射后经过氧化碲声光合束/分束器，该氧化碲声光合束/分束器加载第一频率f1的声波，光脉冲发生偏转，进入腔体光干路，且光脉冲为氧化碲晶体的e偏振光；When the optical pulse enters the cavity, the tellurium oxide acousto-optical beam combiner/beam splitter is in an inactive state, and the frequency acoustic wave is not loaded. At this time, the optical pulse does not deflect from the first
光脉冲第一次进入腔体光干路后，进入脉冲放大状态，氧化碲声光合束/分束器件加载第一频率f1以及第二频率f2的声波，光脉冲经腔体光干路侧的全反镜反射后经过氧化碲声光合束/分束器，实现光脉冲能量的平分，一部分能量脉冲进入第一光支路，另一部分能量脉冲进入第二光支路，两部分光脉冲分别在各自支路上与Nd:YAG激光工作物质相互作用实现能量放大，当光脉冲再次通过氧化碲声光合束/分束器时，光脉冲合束，完成一次往返，多次往返实现再生放大；After the optical pulse enters the cavity optical trunk circuit for the first time, it enters the pulse amplification state. The tellurium oxide acousto-optical beam combining/beam splitting device is loaded with acoustic waves of the first frequency f 1 and the second frequency f 2 , and the optical pulse passes through the cavity optical trunk circuit. The total reflection mirror on the side is reflected by the tellurium oxide acousto-optical beam combiner/beam splitter to realize the equal division of the optical pulse energy. One part of the energy pulse enters the first optical branch, the other part of the energy pulse enters the second optical branch, and the two parts of the optical pulse Respectively interact with the Nd:YAG laser working substance on their respective branches to achieve energy amplification. When the optical pulse passes through the tellurium oxide acousto-optical beam combiner/beam splitter again, the optical pulse is combined to complete one round trip, and multiple round trips to achieve regeneration and amplification;
当光脉冲能量放大到经计算后的一定程度，进入脉冲出腔状态，此时光脉冲进入腔体光干路，此时氧化碲声光合束/分束器处于未工作状态，不加载声波，光脉冲经腔体光干路侧全反镜反射后再次经过氧化碲声光合束/分束器时，光脉冲从腔体光干路输出，完成再生放大过程；When the optical pulse energy is amplified to a certain degree after calculation, it enters the pulse out-cavity state, and the optical pulse enters the cavity optical trunk circuit. When the pulse is reflected by the total reflection mirror on the side of the cavity optical trunk and then passes through the tellurium oxide acousto-optic beam combiner/beam splitter again, the optical pulse is output from the cavity optical trunk to complete the regeneration and amplification process;
进一步地，在脉冲放大状态时，氧化碲声光合束/分束器加载第一频率f1以及第二频率f2的声波，两个频率声波功率不相同，从而控制进入腔体每支路的能量占比，实现光脉冲能量的分配；Further, in the pulse amplification state, the tellurium oxide acousto-optical beam combiner/beam splitter is loaded with sound waves of the first frequency f 1 and the second frequency f 2 , and the power of the sound waves at the two frequencies is different, so as to control the sound waves entering each branch of the cavity. Energy ratio to realize the distribution of light pulse energy;
进一步地，在光脉冲放大状态时，光脉冲每次往返放大进入腔体光干路时，声光合束/分束器交替加载第一频率f1，第二频率f2的声波，以实现光脉冲交替进入第一光支路和第二光支路，为两条支路的激光工作物质的泵浦提供充足的时间；Further, in the optical pulse amplification state, each time the optical pulse is amplified back and forth into the cavity optical trunk, the acousto-optic beam combiner/beam splitter alternately loads the acoustic waves of the first frequency f 1 and the second frequency f 2 to realize the optical The pulses alternately enter the first optical branch and the second optical branch, providing sufficient time for the pumping of the laser working substances of the two branches;
可替换地，在光脉冲出腔状态时，光脉冲进入腔体光干路，氧化碲声光合束/分束器仅仅加载第二频率f2的声波，光脉冲经腔体光干路侧的全反镜反射后再次经过氧化碲声光合束/分束器时，光脉冲全部偏转到第二光支路传输，光脉冲经过第二光支路侧的全反镜反射后再次通过氧化碲声光合束/分束器，此时该氧化碲声光合束/分束器为未工作转态，不加载声波，光脉冲通过氧化碲晶体不产生偏转，实现光脉冲从第二光支路出腔端口3输出。Alternatively, when the optical pulse exits the cavity, the optical pulse enters the cavity optical trunk, the tellurium oxide acousto-optical beam combiner/beam splitter only loads the acoustic wave of the second frequency f 2 , and the optical pulse passes through the optical trunk side of the cavity. After being reflected by the total reflection mirror, when it passes through the tellurium oxide acousto-optical beam combiner/beam splitter again, the light pulses are all deflected to the second optical branch for transmission. Optical beam combiner/beam splitter, at this time, the tellurium oxide acousto-optic beam combiner/beam splitter is in an inactive state, no sound wave is loaded, and the optical pulse does not deflect through the tellurium oxide crystal, so that the optical pulse exits the cavity from the second
实施例3Example 3
图3为实施例3提供的一种基于声光合束技术的光脉冲再生放大器，包括激光再生放大腔体，氧化碲声光合束/分束器，布鲁斯特偏振片，Nd:YAG激光工作物质；Fig. 3 is a kind of optical pulse regeneration amplifier based on acousto-optic beam combining technology provided by
其中，①为全反镜；②为声光合束/分束器；③为任意波形信号发生器；④为布鲁斯特偏振片(第一光支路，第二光支路均放置)；⑤为Nd:YAG激光工作物质(第一光支路，第二光支路均放置)；⑥为全反镜(第一光支路，第二光支路均放置)；Among them, ① is a total reflection mirror; ② is acousto-optic beam combiner/beam splitter; ③ is an arbitrary waveform signal generator; ④ is Brewster polarizer (the first optical branch and the second optical branch are placed); ⑤ is Nd:YAG laser working substance (the first optical branch and the second optical branch are placed); ⑥ is a total reflection mirror (the first optical branch and the second optical branch are placed);
激光再生放大腔体基本结构为“Y”字型，即光束进入激光再生放大腔体后存在腔体光干路，第一光支路和第二光支路三个部分，第一光支路和第二光支路的相同长度以实现分束光脉冲的同步放大；三个光路的夹角由声光合束/分束器件工作状态决定，构成激光谐振腔体所用的均为全反镜；The basic structure of the laser regeneration and amplification cavity is a "Y" shape, that is, after the light beam enters the laser regeneration and amplification cavity, there is a cavity optical trunk, the first optical branch and the second optical branch three parts, the first optical branch The same length as the second optical branch to achieve synchronous amplification of the split light pulse; the included angle of the three optical paths is determined by the working state of the acousto-optic beam combining/beam splitting device, and all mirrors are used to form the laser resonant cavity;
氧化碲声光合束/分束器位于激光腔体“Y”字型节点的位置；The tellurium oxide acousto-optic beam combiner/beam splitter is located at the "Y"-shaped node of the laser cavity;
布鲁斯特片位于第一光支路和第二光支路，且允许透过的光束为氧化碲声光合束/分束器o偏振态的光束；The Brewster plate is located in the first optical branch and the second optical branch, and the light beam allowed to pass through is the light beam of the o polarization state of the tellurium oxide acousto-optic beam combiner/beam splitter;
进一步地，布鲁斯特片也可位于腔体光干路，允许透过的光束为氧化碲声光合束/分束器的e偏振态的光束；Further, the Brewster plate can also be located in the optical trunk path of the cavity, allowing the transmitted light beam to be the light beam of the e-polarization state of the tellurium oxide acousto-optic beam combiner/beam splitter;
进一步地，布鲁斯特片可位于第一光支路窗口或第二光支路窗口(需为光脉冲入腔的光支路端口)的外部，允许透过的光束为氧化碲声光合束/分束器o偏振态的光束；Further, the Brewster sheet can be located outside the first optical branch window or the second optical branch window (it needs to be the optical branch port where the optical pulse enters the cavity), and the light beam allowed to pass through is the tellurium oxide acousto-optical combination/split. beam of polarization state of the beamer o;
Nd:YAG激光工作物质位于第一光支路和第二光支路，激光工作物质相同以保证同步放大；The Nd:YAG laser working substance is located in the first optical branch and the second optical branch, and the laser working substance is the same to ensure synchronous amplification;
此时激光再生放大腔体存在三个端口，腔体光干路出腔端口1，第一光支路出腔端口2和第二光支路入腔端口3；At this time, there are three ports in the laser regeneration and amplification cavity, the cavity optical trunk outlet port 1, the first optical
光脉冲入腔状态时，氧化碲声光合束/分束器处于未工作状态，不加载频率声波，此时光脉冲从第二光支路入腔端口3经过氧化碲声光合束/分束器件不发生偏转，进入激光再生放大腔第二光支路且脉冲偏振为氧化碲晶体的o光，当光脉冲经过第二光支路侧的全反镜反射后经过氧化碲声光合束/分束器，此时氧化碲声光合束/分束器加载第二频率f2的声波，光脉冲发生偏转，进入腔体光干路，且光脉冲为氧化碲晶体的e偏振光；When the optical pulse enters the cavity, the tellurium oxide acousto-optical beam combiner/beam splitter is in an inactive state, and the frequency acoustic wave is not loaded. At this time, the optical pulse from the second optical branch into the
光脉冲第一次进入腔体光干路后，进入光脉冲放大状态，氧化碲声光合束/分束器件加载第一频率f1以及第二频率f2的声波，光脉冲经腔体光干路侧的全反镜反射后经过氧化碲声光合束/分束器，实现光脉冲能量的平分，一部分能量光脉冲进入第一光支路，另一部分能量光脉冲进入第二光支路，两部分光脉冲分别在各自支路上与Nd:YAG激光工作物质相互作用实现能量放大，当光脉冲再次通过氧化碲声光合束/分束器时，光脉冲合束，完成一次往返，多次往返实现再生放大；After the optical pulse enters the cavity optical trunk circuit for the first time, it enters the optical pulse amplification state. The tellurium oxide acousto-optical beam combining/beam splitting device is loaded with acoustic waves of the first frequency f 1 and the second frequency f 2 , and the optical pulse passes through the cavity optical trunk. The total reflection mirror on the road side is reflected by the tellurium oxide acousto-optical beam combiner/beam splitter to realize the equal division of the optical pulse energy. Part of the energy optical pulse enters the first optical branch, and the other part of the energy optical pulse enters the second optical branch. Part of the optical pulses interact with the Nd:YAG laser working substance on their respective branches to achieve energy amplification. When the optical pulses pass through the tellurium oxide acousto-optic beam combiner/beam splitter again, the optical pulses are combined to complete one round trip, and multiple round trips are realized. regenerative amplification;
当光脉冲能量放大到经计算后的一定程度，进入光脉冲出腔状态，光脉冲进入腔体光干路，氧化碲声光合束/分束器处于未工作状态，不加载声波，光脉冲经腔体光干路侧全反镜反射后再次经过氧化碲声光合束/分束器时，光脉冲从腔体光干路输出，完成再生放大过程；When the energy of the optical pulse is amplified to a certain degree after calculation, it enters the state of the optical pulse exiting the cavity, the optical pulse enters the optical trunk circuit of the cavity, the tellurium oxide acousto-optical beam combiner/beam splitter is in a non-working state, and the acoustic wave is not loaded, and the optical pulse passes through the cavity. When the optical trunk side of the cavity is reflected by the total reflection mirror and passes through the tellurium oxide acousto-optical beam combiner/beam splitter again, the optical pulse is output from the cavity optical trunk to complete the regeneration and amplification process;
进一步地，在光脉冲放大状态时，氧化碲声光合束/分束器加载第一频率f1以及第二频率f2的声波，两个频率声波功率不相同，从而控制进入腔体每光支路的能量占比，实现光脉冲能量的分配；Further, when the optical pulse is amplified, the tellurium oxide acousto-optical beam combiner/beam splitter is loaded with acoustic waves of the first frequency f 1 and the second frequency f 2 , and the acoustic waves of the two frequencies have different powers, thereby controlling each optical branch entering the cavity. The energy ratio of the path is used to realize the distribution of light pulse energy;
进一步地，在光脉冲放大状态时，光脉冲每次往返放大进入腔体光干路时，声光合束/分束器交替加载第一频率f1，第二频率f2的声波，以实现光脉冲交替进入第一光支路和第二光支路，为两条支路的激光工作物质的泵浦提供充足的时间；Further, in the optical pulse amplification state, each time the optical pulse is amplified back and forth into the cavity optical trunk, the acousto-optic beam combiner/beam splitter alternately loads the acoustic waves of the first frequency f 1 and the second frequency f 2 to realize the optical The pulses alternately enter the first optical branch and the second optical branch, providing sufficient time for the pumping of the laser working substances of the two branches;
可选择地，在光脉冲出腔状态时，光脉冲进入腔体光干路，氧化碲声光合束/分束器仅仅加载第一频率f1的声波，光脉冲经腔体光干路侧全反镜反射后再次经过氧化碲声光合束/分束器时，光脉冲全部偏转到第一光支路传输，光脉冲经过第一光支路侧全反镜反射后再次通过氧化碲声光合束/分束器，此时氧化碲声光合束/分束器为未工作转态，不加载声波，光脉冲通过氧化碲晶体不产生偏转，实现光脉冲从第一光支路端口2输出。Optionally, when the optical pulse exits the cavity, the optical pulse enters the cavity optical trunk, the tellurium oxide acousto-optical beam combiner/beam splitter only loads the acoustic wave of the first frequency f 1 , and the optical pulse passes through the cavity optical trunk side fully. After being reflected by the mirror, when it passes through the tellurium oxide acousto-optic beam combiner/beam splitter again, the light pulses are all deflected to the first optical branch for transmission. /beam splitter, at this time, the tellurium oxide acousto-optical beam combiner/beam splitter is in an inactive state, no sound wave is loaded, and the optical pulse does not deflect through the tellurium oxide crystal, so that the optical pulse is output from the first
综上所述，本发明提供的基于声光效应的激光再生放大器，具有三个脉冲输入输出端口，根据控制声光合束/分束器上加载特定频率的声波，可以实现不同的端口输入与输出，功能实现灵活多变，且解决了现有再生放大器外部需设置偏振控制器以防止光脉冲原路返回的问题。To sum up, the laser regeneration amplifier based on the acousto-optic effect provided by the present invention has three pulse input and output ports. According to the control of the acousto-optic beam combiner/beam splitter to load a sound wave of a specific frequency, the input and output of different ports can be realized. , the function is flexible and changeable, and the problem that a polarization controller needs to be set outside the existing regenerative amplifier to prevent the optical pulse from returning to the original path is solved.
本发明利用声光合束/分束器，光脉冲能量可分离至第一光支路和第二光支路中各自进行再生放大，输出时再将两支路光脉冲合为一个光脉冲，整个过程相当于实现了在高重复频率的条件下提升了光脉冲能量的作用。The present invention utilizes the acousto-optic beam combiner/beam splitter, and the optical pulse energy can be separated into the first optical branch and the second optical branch for regeneration and amplification respectively. The process is equivalent to realizing the effect of increasing the energy of the light pulse under the condition of high repetition rate.
本领域的技术人员容易理解，以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028348.0A CN110768092B (en) | 2019-10-28 | 2019-10-28 | Laser regenerative amplifier based on acousto-optic effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028348.0A CN110768092B (en) | 2019-10-28 | 2019-10-28 | Laser regenerative amplifier based on acousto-optic effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110768092A true CN110768092A (en) | 2020-02-07 |
| CN110768092B CN110768092B (en) | 2020-10-30 |
Family
ID=69334085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911028348.0A Active CN110768092B (en) | 2019-10-28 | 2019-10-28 | Laser regenerative amplifier based on acousto-optic effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110768092B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230109073A (en) * | 2022-01-12 | 2023-07-19 | 한국전자통신연구원 | laser device and optical apparatus including the same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020048075A1 (en) * | 1999-03-03 | 2002-04-25 | Haas-Laser Gmbh & Co. Kg | Optical modulation device |
| US6807198B1 (en) * | 1999-07-07 | 2004-10-19 | Femtolasers Produktions Gmbh | Laser device |
| US20060274403A1 (en) * | 2003-03-03 | 2006-12-07 | Fastlite | Method and device for controlling the amplitude of the wavelength spectrum of ultra-short light pulses emitted by multiple passage laser amplifiers |
| US7982947B2 (en) * | 2008-01-08 | 2011-07-19 | Applied Energetics, Inc | Regenerative laser amplifier |
| CN102782965A (en) * | 2010-02-17 | 2012-11-14 | 高质激光有限公司 | Laser amplification system and method for generating retrievable laser pulses |
| CN105375251A (en) * | 2015-12-04 | 2016-03-02 | 温州大学 | Waveband wavelength optional human eye safety laser and realization method |
| CN105723194A (en) * | 2013-09-03 | 2016-06-29 | 徕卡显微系统复合显微镜有限公司 | Microscope and acousto-optic beam combiner for microscope |
| CN108832476A (en) * | 2018-06-27 | 2018-11-16 | 武汉市威佳激光有限责任公司 | A kind of multiple channel acousto photoreactivation tune Q light source and Q-regulating method |
-
2019
- 2019-10-28 CN CN201911028348.0A patent/CN110768092B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020048075A1 (en) * | 1999-03-03 | 2002-04-25 | Haas-Laser Gmbh & Co. Kg | Optical modulation device |
| US6807198B1 (en) * | 1999-07-07 | 2004-10-19 | Femtolasers Produktions Gmbh | Laser device |
| US20060274403A1 (en) * | 2003-03-03 | 2006-12-07 | Fastlite | Method and device for controlling the amplitude of the wavelength spectrum of ultra-short light pulses emitted by multiple passage laser amplifiers |
| US7982947B2 (en) * | 2008-01-08 | 2011-07-19 | Applied Energetics, Inc | Regenerative laser amplifier |
| CN102782965A (en) * | 2010-02-17 | 2012-11-14 | 高质激光有限公司 | Laser amplification system and method for generating retrievable laser pulses |
| CN105723194A (en) * | 2013-09-03 | 2016-06-29 | 徕卡显微系统复合显微镜有限公司 | Microscope and acousto-optic beam combiner for microscope |
| CN105375251A (en) * | 2015-12-04 | 2016-03-02 | 温州大学 | Waveband wavelength optional human eye safety laser and realization method |
| CN108832476A (en) * | 2018-06-27 | 2018-11-16 | 武汉市威佳激光有限责任公司 | A kind of multiple channel acousto photoreactivation tune Q light source and Q-regulating method |
Non-Patent Citations (3)
| Title |
|---|
| ENMAO SONG等: "The design of thin disk laser multi-pass amplifier", 《SPIE》 * |
| M.DELAIGUE等: "300 kHz femtosecond Yb KGW regenerative amplifier using an acousto–optic Q-switch", 《APPLIED PHYSICS B》 * |
| 树人: "Nd:YAG再生放大器", 《激光与红外》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230109073A (en) * | 2022-01-12 | 2023-07-19 | 한국전자통신연구원 | laser device and optical apparatus including the same |
| KR102793320B1 (en) | 2022-01-12 | 2025-04-09 | 한국전자통신연구원 | laser device and optical apparatus including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110768092B (en) | 2020-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102528882B1 (en) | Pulsed laser systems with time-modulated rate and/or amplitude | |
| US9158177B2 (en) | Optical systems | |
| CN102709801B (en) | Laser capable of simultaneously outputting nanosecond pulses and pico-second pulses | |
| US8149886B2 (en) | Laser amplifier system and laser amplifier method | |
| WO2009148924A1 (en) | Sequentially-modulated diode-laser seed-pulse generator | |
| US8369004B2 (en) | MOPA light source | |
| US8373924B2 (en) | Frequency-tripled fiber MOPA | |
| CN101154789A (en) | Optical Parametric Amplification System Based on All-Fiber Laser | |
| CN110768092B (en) | Laser regenerative amplifier based on acousto-optic effect | |
| CN205248608U (en) | High power flies a second fiber laser | |
| CN115513756B (en) | A high-power and high-energy femtosecond laser with acousto-optic beam combining and laser beam combining method thereof | |
| KR102235631B1 (en) | Laser Equipment for Outputting Multi-Pulse Width | |
| WO2023206913A1 (en) | Optical path system of pulsed fiber laser, and laser | |
| CN216015994U (en) | Laser device | |
| CN107086431B (en) | Drive the production method and device of the incoherent laser pulse of complicated shape of fusion impact igniting | |
| US20070103684A1 (en) | Phase wavelength and polarization insensitive optical devices | |
| WO2020034803A1 (en) | Gain medium multiplexed thin disk hybrid amplification laser and laser output method therefor | |
| CN114552352A (en) | Time division multiplexing pump source for multi-channel parametric amplification | |
| CN116845682A (en) | Pulse width adjustable optical fiber laser | |
| CN113708204B (en) | Multi-cavity composite pulse laser and multi-cavity composite pulse laser amplifier | |
| CN110165538A (en) | A kind of generation system of high energy dissipation orphan resonance rectangle pulse | |
| CN115084990A (en) | Optical amplifier and pulsed laser device | |
| EP2302746A2 (en) | Method and apparatus for multipass optical amplification | |
| CN105322419B (en) | A kind of pulse optical fiber | |
| CN214379240U (en) | Annular cavity regeneration laser 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |