CN105655859A - Device for fully extracting stored energy of laser amplifier to acquire high-energy laser pulse output - Google Patents
Device for fully extracting stored energy of laser amplifier to acquire high-energy laser pulse output Download PDFInfo
- Publication number
- CN105655859A CN105655859A CN201610217853.XA CN201610217853A CN105655859A CN 105655859 A CN105655859 A CN 105655859A CN 201610217853 A CN201610217853 A CN 201610217853A CN 105655859 A CN105655859 A CN 105655859A
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- China
- Prior art keywords
- polarizer
- laser
- light
- amplifier
- reflecting mirror
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Classifications
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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
-
- 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
- H01S3/10084—Frequency control by seeding
Abstract
The invention discloses a device for fully extracting stored energy of a laser amplifier to acquire a high-energy laser pulse output, relates to a stored energy extraction technology for the laser amplifier, and aims to solve the problem that the conventional solid pulse laser device cannot effectively improve the laser output energy and power. Seed light is transmitted by a polarizing device I and then is divided into reflected light and transmitted light via a polarizing device II; the reflected light is incident into the amplifier, and the transmitted light is transmitted by the polarizing device II after being reflected by a reflector I and a reflector II, and then is incident into the amplifier; the light emergent from the amplifier is divided into reflected light and transmitted light through a polarizing device IV after being transmitted by a polarizing device III; the transmitted light is transmitted by the polarizing device IV again after being reflected by a reflector III and a reflector IV. According to the device disclosed by the invention, the energy extraction efficiency of the laser device is effectively improved, and the damage risk of a single laser bundle is reduced; the device is simple, feasible, and reliable in performance and has the advantages of small size and low cost.
Description
Technical field
The present invention relates to a kind of solid state laser, obtain the technology of high energy laser pulse output particularly to a kind of abundant extraction laser amplifier energy storage, belong to laser field.
Background technology
Have high pulse energy, narrow pulse width, high-peak power solid state laser have a wide range of applications in fields such as laser radar, laser impact intensified, Strong-field physics, laser inertial confinement fusions. In order to obtain the output of narrow pulse width laser, tune Q and locked mode are modes two kinds main, and the laser pulse width of its acquisition is generally in nanosecond (10-9S) to femtosecond (10-15S) magnitude, but single pulse energy is generally MJ (mJ) even receives Jiao (nJ), thus limit its application. Pulse laser in order to obtain large energy exports, and people generally require and adopt laser amplifier that the light source pulse obtained is amplified. But owing to the pulse width of pulse laser is narrower, and gain medium is highly susceptible to the damage influence of light laser, the output energy of narrow laser pulse and power and can only be limited at certain level. Output energy and power for improving laser, increase the bore of gain media to reduce in the way of energy (power) density is the most extensively to take, but this method is added significantly to the construction cost of laser instrument on the one hand, on the other hand, for solid laser medium, the size of medium can not unconfined increase. It addition, pulse laser is narrower due to pulsewidth, can not effectively extract the energy storage in amplifier so that the slatterning all in vain of the energy storage in amplifier. Therefore, fully extracting laser amplifier energy storage, thus obtaining high energy laser pulse output, for improving the energy extraction efficiency of existing laser instrument, the output intensity increasing laser pulse has very high using value.
Summary of the invention
The invention aims to solve existing solid pulse laser cannot the problem of effectively improving laser output energy and power, it is provided that a kind of abundant extraction laser amplifier energy storage obtains the device of high energy laser pulse output.
A kind of abundant extraction laser amplifier energy storage of the present invention obtains the device of high energy laser pulse output, including seed light laser instrument 1, polarizer 1, polarizer 23, reflecting mirror 1, reflecting mirror 25, amplifier 6, polarizer 37, polarizer 48, reflecting mirror 39 and reflecting mirror 4 10;
The pulse laser of seed light laser instrument 1 output is incident to the surface of polarizer 23 after polarizer 1 transmission, reflection light and transmission light it is divided into through polarizer 23, wherein reflection light is incident to amplifier 6, after transmission light is reflected mirror 1 and reflecting mirror 25 reflection successively, then through polarizer 23 transmission, then it is incident to amplifier 6;
After polarizer 37 transmission, it is incident to the surface of polarizer 48 from the light of amplifier 6 outgoing, and is divided into reflection light and transmission light through polarizer 48, after wherein transmission light is reflected mirror 39 and reflecting mirror 4 10 reflection successively, then through polarizer 48 transmission.
One bundle of pulsed laser (i.e. seed light) is carried out polarization beam splitting by the present invention, by regulating the light path of a bundle of pulsed laser, it is thus achieved that two bundles have the dipulse of different delayed time. Subsequently, in double-pulse laser injection amplification device, the energy storage that the dipulse of amplifier can fully be extracted in amplifier will be passed sequentially through, then, by the polarized combination of dual-beam, it is thus achieved that the big energy of pulse exports or has the pulse-pair output at different time interval.
The present invention can pass through to control the dipulse of the different pulse delay of light path acquisition of two bundle light splitting light beams, it is effectively improved the energy extraction efficiency of amplifier, reduce the damage risk of single beam laser, with adopt prior art obtain equal laser pulse width double to several times energy export compared with, the present invention implements simple and dependable performance; Additionally, device of the present invention also has the advantage of miniaturization, low cost.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of abundant extraction laser amplifier energy storage of the present invention obtains the device of high energy laser pulse output;
Fig. 2 is the oscillogram of seed light laser instrument 1 Output of laser, pulse width 600ps;
Fig. 3 be seed light after polarizer 48 light splitting, be incident to the oscillogram of the two-beam of amplifier 6, the pulse delay of two-beam is about 1ns;
Fig. 4 is pulse delay difference �� t1During=0ns, finally from the oscillogram of the pulse of polarizer 48 outgoing.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described in conjunction with Fig. 1 to Fig. 4, a kind of abundant extraction laser amplifier energy storage described in present embodiment obtains the device of high energy laser pulse output, including seed light laser instrument 1, polarizer 1, polarizer 23, reflecting mirror 1, reflecting mirror 25, amplifier 6, polarizer 37, polarizer 48, reflecting mirror 39 and reflecting mirror 4 10;
The pulse laser of seed light laser instrument 1 output is incident to the surface of polarizer 23 after polarizer 1 transmission, reflection light and transmission light it is divided into through polarizer 23, wherein reflection light is incident to amplifier 6, after transmission light is reflected mirror 1 and reflecting mirror 25 reflection successively, then through polarizer 23 transmission, then it is incident to amplifier 6;
After polarizer 37 transmission, it is incident to the surface of polarizer 48 from the light of amplifier 6 outgoing, and is divided into reflection light and transmission light through polarizer 48, after wherein transmission light is reflected mirror 39 and reflecting mirror 4 10 reflection successively, then through polarizer 48 transmission.
In present embodiment, the seed light of seed light laser instrument 1 output is pulsed light; Polarizer 1 is used for changing the polarization state of seed light (1); Polarizer 23 realizes horizontal polarization light transmission, vertical polarization luminous reflectance; Reflecting mirror 1 and reflecting mirror 25 realize the total reflection of light beam; Amplifier 6 adopts the structure of routine;Polarizer 37 will transmit through that the horizontal polarization light of amplifier 6 transfers orthogonal polarized light to, orthogonal polarized light transfers horizontal polarization light to; Polarizer 48 realizes horizontal polarization light transmission, vertical polarization luminous reflectance; Reflecting mirror 39 and reflecting mirror 4 10 realize the total reflection of light beam.
It is divided into reflection and transmission two-beam through polarizer 23 from the light of polarizer 1 transmission, reflection light is directly entered amplifier 6, transmission light then needs just to enter amplifier 6 after two secondary reflections and a transmission, and the delay inequality of the two-beam entering amplifier 6 isWherein L1For from polarizer 23 to the light path of reflecting mirror 1, L2For from reflecting mirror 1 to the light path of reflecting mirror 25, L3For from reflecting mirror 25 to the light path of polarizer 23, c is the light velocity, delay inequality �� t1Can pass through to regulate the position of reflecting mirror 1 and reflecting mirror 25 or distance realization. In like manner, polarizer 48, reflecting mirror 39 and reflecting mirror 4 10 delay inequality produced isWherein, L1' for the light path of polarizer 48 to reflecting mirror 39, L2' for the light path of reflecting mirror 39 to reflecting mirror 4 10, L3' for the light path of reflecting mirror 4 10 to polarizer 48, delay inequality �� t2Can pass through to regulate the position of reflecting mirror 39 and reflecting mirror 4 10 or distance realization. It is �� t=�� t from the delay inequality of the polarizer 48 finally two-beam of output1+��t2, work as L1+L2+L3=L1'+L2'+L3' time, device realizes pulse output, works as L1+L2+L3��L1'+L2'+L3' time, device realizes pulse-pair output. Adjust polarizer 1 and can change the polarization state of seed light laser instrument 1 Output of laser and the different polarization states energy ratio of injection amplification device 6, and then adjust output energy and the ratio of two pulses.
Detailed description of the invention two: present embodiment is described in conjunction with Fig. 1, present embodiment is the further restriction of the device that a kind of abundant extraction laser amplifier energy storage described in embodiment one obtains high energy laser pulse output, in present embodiment, comprise multiple amplification module in described amplifier 6, and the voltage of multiple amplification module is identical with discharge lag or different.
Detailed description of the invention three: present embodiment is described in conjunction with Fig. 1, present embodiment is the further restriction of the device that a kind of abundant extraction laser amplifier energy storage described in embodiment one obtains high energy laser pulse output, in present embodiment, polarizer 1 and polarizer 37 are 1/2nd wave plates, quarter-wave plate or quartz rotor.
Polarizer 1 and polarizer 37 can adopt the conventional polarization rotator parts such as 1/2nd wave plates, quarter-wave plate or quartz rotor to realize.
Detailed description of the invention four: present embodiment is described in conjunction with Fig. 1, present embodiment is the further restriction of the device that a kind of abundant extraction laser amplifier energy storage described in embodiment one obtains high energy laser pulse output, in present embodiment, polarizer 23 and polarizer 48 are polaroid or polarization splitting prism.
The polarized light splitting device that polarizer 23 and polarizer 48 can adopt polaroid or polarization splitting prism etc. conventional realizes.
Claims (4)
1. an abundant extraction laser amplifier energy storage obtains the device that high energy laser pulse exports, it is characterized in that, this device includes seed light laser instrument (1), polarizer one (2), polarizer two (3), reflecting mirror one (4), reflecting mirror two (5), amplifier (6), polarizer three (7), polarizer four (8), reflecting mirror three (9) and reflecting mirror four (10);
The pulse laser that seed light laser instrument (1) exports is incident to the surface of polarizer two (3) after polarizer one (2) transmission, reflection light and transmission light it is divided into through polarizer two (3), wherein reflection light is incident to amplifier (6), after transmission light is reflected mirror one (4) and reflecting mirror two (5) reflection successively, then through polarizer two (3) transmission, then it is incident to amplifier (6);
After polarizer three (7) transmission, the surface of polarizer four (8) it is incident to from the light of amplifier (6) outgoing, and reflection light and transmission light it is divided into through polarizer four (8), after wherein transmission light is reflected mirror three (9) and reflecting mirror four (10) reflection successively, then through polarizer four (8) transmission.
2. a kind of abundant extraction laser amplifier energy storage according to claim 1 obtains the device of high energy laser pulse output, it is characterized in that, comprise multiple amplification module in described amplifier (6), and the voltage of multiple amplification module is identical with discharge lag or different.
3. a kind of abundant extraction laser amplifier energy storage according to claim 1 and 2 obtains the device of high energy laser pulse output, it is characterized in that, polarizer one (2) and polarizer three (7) are 1/2nd wave plates, quarter-wave plate or quartz rotor.
4. a kind of abundant extraction laser amplifier energy storage according to claim 1 and 2 obtains the device of high energy laser pulse output, it is characterized in that, polarizer two (3) and polarizer four (8) are polaroid or polarization splitting prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610217853.XA CN105655859A (en) | 2016-04-08 | 2016-04-08 | Device for fully extracting stored energy of laser amplifier to acquire high-energy laser pulse output |
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| CN201610217853.XA CN105655859A (en) | 2016-04-08 | 2016-04-08 | Device for fully extracting stored energy of laser amplifier to acquire high-energy laser pulse output |
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| CN105655859A true CN105655859A (en) | 2016-06-08 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570272A (en) * | 2011-11-16 | 2012-07-11 | 北京国科世纪激光技术有限公司 | Picosecond laser pulse regenerative amplifier |
| US20140056321A1 (en) * | 2012-08-22 | 2014-02-27 | Xiaoyuan Peng | Optical amplifier and process |
| CN203574219U (en) * | 2013-11-13 | 2014-04-30 | 上海朗研光电科技有限公司 | Separation pulse broadening optical device based on cascaded polarization beam split |
| CN103891064A (en) * | 2011-03-07 | 2014-06-25 | Imra美国公司 | Optical pulse source with increased peak power |
| CN103972779A (en) * | 2014-05-28 | 2014-08-06 | 上海朗研光电科技有限公司 | Polarization combination nonlinear rotary mode locking method |
| CN205452779U (en) * | 2016-04-08 | 2016-08-10 | 吕志伟 | Fully draw device that laser amplifier energy storage obtained output of high -energy laser pulse |
-
2016
- 2016-04-08 CN CN201610217853.XA patent/CN105655859A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103891064A (en) * | 2011-03-07 | 2014-06-25 | Imra美国公司 | Optical pulse source with increased peak power |
| CN102570272A (en) * | 2011-11-16 | 2012-07-11 | 北京国科世纪激光技术有限公司 | Picosecond laser pulse regenerative amplifier |
| US20140056321A1 (en) * | 2012-08-22 | 2014-02-27 | Xiaoyuan Peng | Optical amplifier and process |
| CN203574219U (en) * | 2013-11-13 | 2014-04-30 | 上海朗研光电科技有限公司 | Separation pulse broadening optical device based on cascaded polarization beam split |
| CN103972779A (en) * | 2014-05-28 | 2014-08-06 | 上海朗研光电科技有限公司 | Polarization combination nonlinear rotary mode locking method |
| CN205452779U (en) * | 2016-04-08 | 2016-08-10 | 吕志伟 | Fully draw device that laser amplifier energy storage obtained output of high -energy laser pulse |
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Application publication date: 20160608 |
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