CN103001112A - All-solid-state quadruple-harmonic ultraviolet laser - Google Patents
All-solid-state quadruple-harmonic ultraviolet laser Download PDFInfo
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- CN103001112A CN103001112A CN2012102344620A CN201210234462A CN103001112A CN 103001112 A CN103001112 A CN 103001112A CN 2012102344620 A CN2012102344620 A CN 2012102344620A CN 201210234462 A CN201210234462 A CN 201210234462A CN 103001112 A CN103001112 A CN 103001112A
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Abstract
The invention provides an all-solid-state quadruple-harmonic ultraviolet laser. The all-solid-state quadruple-harmonic ultraviolet laser comprises an end holophote, a laser gain medium, a Q-adjusting switch, a first intermediate lens, a double-frequency doubling crystal, a second intermediate lens, a quadruple-frequency doubling crystal, and an output lens. A fundamental wave pulse of high-peak power is generated via a Q-adjusting mode. The fundamental wave pulse generates second harmonic in the double-frequency doubling crystal, and the second harmonic is emitted into the quadruple-frequency doubling crystal to generate quadruple-harmonic ultraviolet laser ultraviolet laser. By the design that the second harmonic is focused and passes through the quadruple-frequency doubling crystal back and forth, control of the spot radius of the second harmonic is realized, high-efficient quadruple-harmonic ultraviolet laser output can be obtained by fully utilizing second harmonic power, and the effects of simple structure and low cost are realized.
Description
Technical field
The present invention relates to a kind of all solid state quartic-harmonic ultraviolet laser.
Background technology
Under current international background, laser is more and more extensive in the application of the aspects such as materials processing.And the shorter Ultra-Violet Laser of wavelength has more significantly advantage with respect to the laser of other wavelength, as has a high photon energy, good material's absorption properties, better focusing power and " cold working " etc., so ultraviolet laser has widely application prospect in fields such as the little processing of precise materials, photoetching.The whole world increases day by day to the demand of ultraviolet laser at present, and application is also in continuous expansion.
At present, obtain pulse four-time harmonic laser and mainly adopt the cavity external frequency multiplication technology.This method with second harmonic by focusing system and a quadruple frequency crystal or adopt powerful first-harmonic to obtain the four-time harmonic Ultra-Violet Laser through the technology path of two frequency-doubling crystals, quadruple frequency crystal successively.Be characterized in that second-harmonic power density is large, cause that easily plane of crystal damages.For remedying this shortcoming, need to improve the plane of crystal coating quality; Or the technology of employing crystal automated movement, namely in use for some time crystal is carried out change place and work long hours to realize it.This technology has strict demand to automatic mobile device, and whole system is complicated, expensive.
Shenzhen big nation laser CN100421316C of company Chinese patent utilizes multiple echo method to obtain pulse four-time harmonic Ultra-Violet Laser.Second harmonic commute frequency multiplication on quadruple frequency crystal that this method utilizes intracavity frequency doubling to obtain, produce the output of high power four-time harmonic Ultra-Violet Laser, the problem of this method is that second harmonic is resonance not, its spot radius constantly becomes large in the commute process, causes not being converted to the power density of second harmonic of four-time harmonic along with commute significantly descends.So along with the increase of second harmonic through the number of times of quadruple frequency crystal, second harmonic is converted to the efficient decrease of four-time harmonic at every turn, therefore this technology still can not take full advantage of second-harmonic power, thereby has limited the four-time harmonic power output.And refrative cavity is adopted in above-mentioned used first-harmonic resonance chamber, can bring like this problem of astigmatism; Use simultaneously that eyeglass is more, cavity configuration is complicated, be unfavorable for the installation and debugging of light path.In its optimal way, second harmonic is 20% to the maximum to the conversion efficiency of four-time harmonic, and its pump light is not reported to the conversion efficiency of four-time harmonic.
For these problems, we develop a kind of compact conformation, be easy to Installation and Debugging and can realize that the second harmonic spot radius is controlled and can take full advantage of the efficient quartic-harmonic ultraviolet laser of second-harmonic power, its second harmonic is 43.6% to the maximum to the conversion efficiency of four-time harmonic, and pump light is 11% to the maximum to the conversion efficiency of four-time harmonic.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, develop and a kind ofly can realize that the second harmonic spot radius is controlled, take full advantage of second-harmonic power, compact conformation, be convenient to Installation and Debugging, stable output, cost is relatively cheap, light conversion efficiency is high quartic-harmonic ultraviolet laser.
To achieve these goals, the present invention adopts following technical scheme (by reference to the accompanying drawings):
1,2,3,4,5,6,7,8 is end total reflective mirror, gain medium, Q-switch, intermediate mirror one, two frequency-doubling crystals, intermediate mirror two, quadruple frequency crystal, outgoing mirror successively in the accompanying drawing; The element that produces second harmonic and four-time harmonic comprises intermediate mirror one (4) successively on light path, two frequency-doubling crystals (5), intermediate mirror two (6), quadruple frequency crystal (7) and outgoing mirror (8), outgoing mirror (8) is planoconcave lens, its radius of curvature is greater than the distance between intermediate mirror two (6) and the outgoing mirror (8), and concave surface is over against quadruple frequency crystal (7), the thoroughly high and harmonic wavelength high-reflecting film of intermediate mirror one (4) plating fundamental wavelength, intermediate mirror two (6) plating first-harmonics, the high anti-and harmonic wavelength high transmittance film of four-time harmonic wavelength, the high anti-and four-time harmonic wavelength high transmittance film of outgoing mirror (8) plating harmonic wavelength;
The utilization high power density first-harmonic that resonance is produced by gain medium (2) between end total reflective mirror (1) and intermediate mirror one (4) is applied to two frequency-doubling crystals (5) and produces second harmonic;
Incide the upper four-time harmonic that produces of described quadruple frequency crystal (7) after the second harmonic process intermediate mirror (6), outgoing mirror (8) reflection also focuses on the second harmonic that is not converted to four-time harmonic, make it again pass through quadruple frequency crystal (7), produce the four-time harmonic of accumulation, then from outgoing mirror (8) coupling output.
The present invention with respect to the innovation that prior art has is: in a kind of all solid state quartic-harmonic ultraviolet laser of the present invention, first-harmonic, second harmonic, four-time harmonic linear pattern light path have formed low-loss coupling, have avoided the astigmatism problem that adopts folding first-harmonic resonance chamber to bring simultaneously fully; Outgoing mirror is that second harmonic can be reflected and focus on to the design of planoconcave lens, the spot radius of second harmonic just can obviously not become large in the commute transmission course like this, realize that the second harmonic spot radius is controlled, the power density that has guaranteed not to be converted into the second harmonic of four-time harmonic can significantly not reduce along with coming back reflective, therefore the shg efficiency of the second harmonic that is not converted to four-time harmonic during at every turn through quadruple frequency crystal also can significantly not descend, under these conditions, reach the purpose that takes full advantage of second-harmonic power, obtain efficient four-time harmonic Laser output.
Adopt optical matrix and Matlab to design a kind of efficient all solid state four-time harmonic laser of semiconductor laser diode pumping.The first-harmonic of high power density incided in the secondary frequency multiplication crystal 5 produce second harmonic, second harmonic is applied on the quadruple frequency crystal 7, outgoing mirror 8 is with non-switched second harmonic reflection meeting quadruple frequency crystal 7, such second harmonic round-trip transmission between intermediate mirror 1 and outgoing mirror 8, second harmonic will repeatedly pass through quadruple frequency crystal 7, produces the four-time harmonic Ultra-Violet Laser of accumulation; The concave surface of outgoing mirror 8 focuses on second harmonic simultaneously, and its concave curvature radius is greater than the distance between intermediate mirror 26 and the outgoing mirror 8, the spot radius that is not converted into like this second harmonic of four-time harmonic can be along with coming back reflective to transmit and significant change, realize that the second harmonic spot radius is controlled, the power density of the second harmonic that is not converted after being focused does not significantly descend, avoid destroying the rete of quadruple frequency crystal 7, guaranteed that simultaneously the shg efficiency the when second harmonic that is not converted passes through quadruple frequency crystal 7 again significantly descends, finally take full advantage of second-harmonic power, obtain efficient four-time harmonic Laser output.
Description of drawings
Fig. 1 is a kind of all solid state quartic-harmonic ultraviolet laser structural representation of the present invention: 1, and the end total reflective mirror; 2, gain medium; 3, Q-switch; 4, intermediate mirror one; 5, two frequency-doubling crystals; 6, intermediate mirror two; 7, quadruple frequency crystal; 8, outgoing mirror
Fig. 2 is in the optimal way of a kind of all solid state quartic-harmonic ultraviolet laser of the present invention, second harmonic along with equivalence come back reflective transmission apart from its spot radius situation of change;
Fig. 3 is in the optimal way of a kind of all solid state quartic-harmonic ultraviolet laser of the present invention, calculates the four-time harmonic power density of accumulation with the situation of change of second harmonic through the number of times of quadruple frequency crystal;
Fig. 4 is in the optimal way of a kind of all solid state quartic-harmonic ultraviolet laser of the present invention, when q-frequency is 30kHz, and the corresponding second harmonic of different pump powers and four-time harmonic laser power variation situation
Embodiment
The principle of a kind of all solid state quartic-harmonic ultraviolet laser of the present invention as shown in Figure 1, fundamental wave oscillator comprises end total reflective mirror 1, gain medium 2, Q-switch 3, intermediate mirror 1, two frequency-doubling crystals 5, intermediate mirror 26.End total reflective mirror 1 plating fundamental wavelength high-reflecting film, the thoroughly high and harmonic wavelength high-reflecting film of intermediate mirror one 4 plating fundamental wavelengths, intermediate mirror 26 plating first-harmonics, the high anti-and harmonic wavelength high transmittance film of four-time harmonic wavelength, the high anti-and four-time harmonic wavelength high transmittance film of outgoing mirror 8 plating harmonic wavelength.
The semiconductor laser diode end pumping is adopted in the first-harmonic resonance chamber, and the pump light that semiconductor laser diode is launched incides gain medium 2 front ends, gain medium 2 absorptive pumping light through coupled system.After considering the thermal lensing effect of gain medium 2, by optical matrix calculate in the chamber basic mode have in intermediate mirror 26 with a tight waist, so two frequency-doubling crystals 5 are placed near intermediate mirror 26.First-harmonic is in the vibration of end total reflective mirror 1 and intermediate mirror 26 inner sealings, and with the thermal lensing effect balance of gain medium 2, therefore can obtain the first-harmonic pulse of high power density.
The element that produces second harmonic comprises intermediate mirror 1, two frequency-doubling crystals 5 and intermediate mirror 26.The second harmonic that intracavity frequency doubling produces sees through intermediate mirror 6 and incides quadruple frequency crystal 7, and the film because outgoing mirror 8 plating second harmonics are all-trans is not converted into the second harmonic of four-time harmonic after outgoing mirror 8 reflections, returns along original optical path.Like this, second harmonic round-trip transmission between intermediate mirror 1 and outgoing mirror 8 just.Simultaneously, second harmonic focuses on through the concave reflection of outgoing mirror 8 and by its concave surface, so that the second harmonic spot radius in the round-trip transmission process significant change does not occur, realizes that the second harmonic hot spot is controlled.
The element that produces four-time harmonic comprises intermediate mirror 26, quadruple frequency crystal 7 and outgoing mirror 8.The second harmonic that sees through intermediate mirror 26 incides on the quadruple frequency crystal, produces four-time harmonic, and this four-time harmonic is by outgoing mirror 8 coupling outputs.The second harmonic that is not converted into four-time harmonic focuses on through outgoing mirror 8 reflections and by its concave surface, not significant change before its spot radius reflects, so its power density does not also significantly descend, shg efficiency did not obviously descend when second harmonic was again through quadruple frequency crystal 7 like this, and the four-time harmonic that again produces is also by outgoing mirror 8 coupling outputs.Therefore second harmonic focuses on and comes and goes through quadruple frequency crystal 7 through outgoing mirror 8, and second-harmonic power is fully used, and can obtain very high efficiency four-time harmonic Laser output.
A kind of all solid state quartic-harmonic ultraviolet laser of the present invention selects an optimal way to calculate and test.Utilize the Matlab program to calculate, the second harmonic equivalence of reflex time transmission light path back and forth between intermediate mirror 1 and outgoing mirror 8, result of calculation such as Fig. 2.In order to compare, we adopt average eyeglass as outgoing mirror (being the non-focusing second harmonic).As seen from Figure 2, compare with non-focusing second harmonic mode, when adopting planoconcave lens as outgoing mirror (namely focusing on second harmonic), the spot radius of second harmonic changes not obvious in reflection process back and forth, can realize that the second harmonic spot radius is controlled.Fig. 3 calculates the four-time harmonic power density of accumulation with the situation of change of second harmonic through the number of times of quadruple frequency crystal.Adopt when focusing on second harmonic, the four-time harmonic power density that produces accumulation is 6.4 times when adopting non-focusing second harmonic mode.
A kind of all solid state quartic-harmonic ultraviolet laser according to the present invention adopts semiconductor laser diode end pumping quadruple experimental provision to test.Fig. 4 is when q-frequency is 30kHz, the corresponding second harmonic of different pump powers and four-time harmonic laser power variation situation.When adopting focusing and non-focusing second harmonic, the peak power output of four-time harmonic is respectively 1.82W and 0.38W.Adopt when focusing on second harmonic, pump light is 11% to the maximum light conversion efficiency of four-time harmonic; Second harmonic can reach 43.6% to the light conversion efficiency of four-time harmonic, when being non-focusing second harmonic mode 3.4 times.Can find out experimental result predicts it is consistent with theoretical calculating.
The present invention with respect to the innovation that prior art has is: in the present invention, first-harmonic, second harmonic, four-time harmonic linear pattern light path have formed low-loss coupling, have avoided the astigmatism problem that adopts folding first-harmonic resonance chamber to bring simultaneously fully; Planoconcave lens can reflect and focus on second harmonic as the design of outgoing mirror, the spot radius of second harmonic just can obviously not become large in the commute transmission course like this, realize that the second harmonic spot radius is controlled, the power density that has guaranteed not to be converted into the second harmonic of four-time harmonic can significantly not reduce along with coming back reflective, therefore the shg efficiency of the second harmonic that is not converted to four-time harmonic during at every turn through quadruple frequency crystal also can significantly not descend, under these conditions, reach the purpose that takes full advantage of second-harmonic power, obtain efficient four-time harmonic Laser output.
The first-harmonic of high power density incided in two frequency-doubling crystals 5 produce second harmonic, second harmonic is applied on the quadruple frequency crystal 7, outgoing mirror 8 is with non-switched second harmonic reflection meeting quadruple frequency crystal 7, such second harmonic round-trip transmission between intermediate mirror 1 and outgoing mirror 8, second harmonic will repeatedly pass through quadruple frequency crystal 7, produces the four-time harmonic Ultra-Violet Laser of accumulation; The concave surface of outgoing mirror 8 focuses on second harmonic simultaneously, and the concave curvature radius of outgoing mirror 8 is greater than the distance between intermediate mirror 26 and the outgoing mirror 8, the spot radius that is not converted into like this second harmonic of four-time harmonic can be along with coming back reflective to transmit and significant change, realize that the second harmonic spot radius is controlled, the power density of the second harmonic that is not converted after being focused does not significantly descend, avoid destroying the rete of quadruple frequency crystal 7, guaranteed that simultaneously the shg efficiency the when second harmonic that is not converted passes through quadruple frequency crystal 7 again significantly descends, take full advantage of second-harmonic power, obtain efficient four-time harmonic Laser output.
Claims (1)
1. all solid state quartic-harmonic ultraviolet laser, it is characterized in that: the element that produces second harmonic and four-time harmonic comprises intermediate mirror one (4) successively on light path, two frequency-doubling crystals (5), intermediate mirror two (6), quadruple frequency crystal (7) and outgoing mirror (8), described outgoing mirror (8) is planoconcave lens, its radius of curvature is greater than the distance between intermediate mirror two (6) and the outgoing mirror (8), and concave surface is over against quadruple frequency crystal (7), the thoroughly high and harmonic wavelength high-reflecting film of described intermediate mirror one (4) plating fundamental wavelength, described intermediate mirror two (6) plating first-harmonics, the high anti-and harmonic wavelength high transmittance film of four-time harmonic wavelength, the high anti-and four-time harmonic wavelength high transmittance film of described outgoing mirror (8) plating harmonic wavelength;
The utilization high power density first-harmonic that resonance is produced by gain medium (2) between end total reflective mirror (1) and intermediate mirror one (4) is applied to two frequency-doubling crystals (5) and produces second harmonic;
Incide the upper four-time harmonic that produces of described quadruple frequency crystal (7) after the described second harmonic process intermediate mirror (6), described outgoing mirror (8) reflection also focuses on the second harmonic that is not converted to four-time harmonic, make it again pass through quadruple frequency crystal (7), produce the four-time harmonic of accumulation, the four-time harmonic of described accumulation is from described outgoing mirror (8) coupling output.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348073A (en) * | 2013-08-09 | 2015-02-11 | 中国科学院物理研究所 | Tunable narrow-linewidth DUV (Deep Ultra Violet) laser |
| CN105659447A (en) * | 2013-09-10 | 2016-06-08 | 科磊股份有限公司 | Low noise, high stability, deep ultra-violet, continuous wave laser |
| CN105703212A (en) * | 2016-03-30 | 2016-06-22 | 天津大学 | Tunable blue-cyan laser and laser acquiring method |
| CN109149340A (en) * | 2018-08-16 | 2019-01-04 | 海南师范大学 | It is a kind of can generation wavelength be 228nm deep ultraviolet full solid laser device |
| CN110247294A (en) * | 2019-07-31 | 2019-09-17 | 中国科学院理化技术研究所 | A kind of ultraviolet laser apparatus using laser self frequency-doubling crystal |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060742A (en) * | 1990-10-11 | 1992-04-29 | 中国科学院上海光学精密机械研究所 | Chamber type higher harmonic laser device |
| US5943351A (en) * | 1997-05-16 | 1999-08-24 | Excel/Quantronix, Inc. | Intra-cavity and inter-cavity harmonics generation in high-power lasers |
| US6026101A (en) * | 1996-06-09 | 2000-02-15 | Ricoh Company, Ltd. | Solid-state laser apparatus |
| CN2609238Y (en) * | 2003-01-28 | 2004-03-31 | 福建华科光电有限公司 | Intracavity four frequency multiplier laser |
| CN1536721A (en) * | 2003-04-11 | 2004-10-13 | ��ʽ����Orc������ | Laser device and laser wavelength converter |
| CN2891404Y (en) * | 2006-02-27 | 2007-04-18 | 南开大学 | High-brightness all solid state ultraviolet laser light source |
| CN101106252A (en) * | 2006-07-14 | 2008-01-16 | 北京国科世纪激光技术有限公司 | A coaxial light output multi-wave length laser device |
| CN201191704Y (en) * | 2008-03-11 | 2009-02-04 | 长春新产业光电技术有限公司 | Composite cavity four-frequency-multiplication full-solid laser |
-
2012
- 2012-07-06 CN CN2012102344620A patent/CN103001112A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060742A (en) * | 1990-10-11 | 1992-04-29 | 中国科学院上海光学精密机械研究所 | Chamber type higher harmonic laser device |
| US6026101A (en) * | 1996-06-09 | 2000-02-15 | Ricoh Company, Ltd. | Solid-state laser apparatus |
| US5943351A (en) * | 1997-05-16 | 1999-08-24 | Excel/Quantronix, Inc. | Intra-cavity and inter-cavity harmonics generation in high-power lasers |
| CN2609238Y (en) * | 2003-01-28 | 2004-03-31 | 福建华科光电有限公司 | Intracavity four frequency multiplier laser |
| CN1536721A (en) * | 2003-04-11 | 2004-10-13 | ��ʽ����Orc������ | Laser device and laser wavelength converter |
| CN2891404Y (en) * | 2006-02-27 | 2007-04-18 | 南开大学 | High-brightness all solid state ultraviolet laser light source |
| CN101106252A (en) * | 2006-07-14 | 2008-01-16 | 北京国科世纪激光技术有限公司 | A coaxial light output multi-wave length laser device |
| CN201191704Y (en) * | 2008-03-11 | 2009-02-04 | 长春新产业光电技术有限公司 | Composite cavity four-frequency-multiplication full-solid laser |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348073A (en) * | 2013-08-09 | 2015-02-11 | 中国科学院物理研究所 | Tunable narrow-linewidth DUV (Deep Ultra Violet) laser |
| CN105659447A (en) * | 2013-09-10 | 2016-06-08 | 科磊股份有限公司 | Low noise, high stability, deep ultra-violet, continuous wave laser |
| CN105659447B (en) * | 2013-09-10 | 2019-07-19 | 科磊股份有限公司 | The continuous wave laser of low noise, high stability, deep ultraviolet light |
| CN105703212A (en) * | 2016-03-30 | 2016-06-22 | 天津大学 | Tunable blue-cyan laser and laser acquiring method |
| CN109149340A (en) * | 2018-08-16 | 2019-01-04 | 海南师范大学 | It is a kind of can generation wavelength be 228nm deep ultraviolet full solid laser device |
| CN110247294A (en) * | 2019-07-31 | 2019-09-17 | 中国科学院理化技术研究所 | A kind of ultraviolet laser apparatus using laser self frequency-doubling crystal |
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Application publication date: 20130327 |