CN103427327A - Broadband Ti:sapphire tunable Raman laser - Google Patents
Broadband Ti:sapphire tunable Raman laser Download PDFInfo
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- CN103427327A CN103427327A CN2012101482407A CN201210148240A CN103427327A CN 103427327 A CN103427327 A CN 103427327A CN 2012101482407 A CN2012101482407 A CN 2012101482407A CN 201210148240 A CN201210148240 A CN 201210148240A CN 103427327 A CN103427327 A CN 103427327A
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Abstract
The invention provides a broadbandTi:sapphire tunable Raman laser. According to the broadband Ti:sapphire tunable Raman laser, a green laser is composed of a laser total-reflection mirror, an acousto-optic Q switch, a semiconductor laser module, a harmonic wave sheet, a frequency doubling crystal and a green laser output mirror. An LDA pump laser gain material is used for generating 1064mm laser. A 532mm laser is generated through the frequency doubling crystal. Pumping is conducted by the 532mm laser on a Ti:sapphire crystal, so that 1000nm-1100nm wave length is generated. A Raman reflecting mirror and a Raman output mirror constitute a resonance cavity. The laser generates simulated Raman scattering under the feedback action of the resonance cavity after passing through a Raman crystal. Through selection of a prism pair and a reflecting mirror, the wave length continuous tunable function is achieved. After the laser passes through the Raman crystal, due to the Raman effect, the frequency shift function is achieved. Finally, long wave length beyond the spectral line of emission of the Ti:sapphire laser is output. The broadband Ti:sapphire tunable Raman laser expands the output wave length range of the Ti:sapphire laser.
Description
Technical field
The present invention relates to the technical field of solid state laser, is a kind of wavelength continuously adjustable specifically, realizes the tunable Raman laser of broadband titanium jewel of ti sapphire laser spectral line of emission long wavelength's in addition output.
Background technology
Stimulated Raman Scattering also can realize the conversion of laser light wave frequency, it is one of important means of Laser-Nonlinear frequency translation, Y F Chen in 2004 be published on Optics Letters article " Compact efficient all solid state eye safe laser with self-frequency conversion in a Nd:YVO4 crystal, " utilize the 1342nm spectral line of Nd:YVO4 to produce the wave band of laser of 1525nm from Raman, when the Q switching modulating frequency is 20kHz, obtained the 1525nm Laser output of 1.2W during pump power 13.5W, the article " Compact efficient Q-switched eye-safe laser at 1525 nm with a double-end diffusion-bonded Nd:YVO4 crystal as a self-Raman medium " that Y TChang in 2009 is published on Optics Express has been reported and has been utilized the Nd:YVO4 composite crystal at pump power 17.2W, in the situation of modulating frequency 40kHz, obtained the 1525nm Laser output of 2.23W, light-light transfer ratio 13%.2007, the people such as Scott M.Spuler in 2007 are published in the Raman laser of 1.5 mu m wavebands of the 17.5W of the article " Raman shifter optimized for lidar at a 1.5 μ m wavelength, Applied Optics " on Applied Optics.Within 2008, A.J.Lee utilizes 880nm diode-end-pumped, Nd:GdVO
4From Raman, frequency multiplication in LBO, obtained the 586.5nm gold-tinted Laser output of 2.51W, but above research all is aimed at the frequency displacement that the laser of fixed band produces fixed band, and its output wavelength is untunable.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of wavelength continuously adjustable, realizes the tunable Raman laser of broadband titanium jewel of ti sapphire laser spectral line of emission long wavelength's in addition output.
The technical scheme that the present invention takes for the technical problem existed in the solution known technology is:
The tunable Raman laser of broadband of the present invention titanium jewel, comprising: the laser total reflection mirror, acoustooptic Q-switching, semiconductor laser module, humorous wave plate, frequency-doubling crystal, the green glow outgoing mirror, focus lamp, titanium gem crystal, the Raman speculum, the Raman crystal, the Raman outgoing mirror, humorous prism to titanium jewel completely reflecting mirror, wherein laser total reflection mirror, acoustooptic Q-switching, semiconductor laser module, humorous wave plate, frequency-doubling crystal and green glow outgoing mirror form green (light) laser, the output high-power quasi continuous green light, after green glow output, through focus lamp, focus in titanium gem crystal, produce the spontaneous radiation of 700nm-1100nm, and produce the Laser emission of 1000nm-1100nm under the effect of Raman outgoing mirror and titanium jewel completely reflecting mirror, by humorous prism, to reaching titanium jewel completely reflecting mirror, wavelength is selected, make the output wave band of laser adjustable continuously in the scope of 1000nm-1100nm, Raman speculum and Raman outgoing mirror form resonant cavity, laser is through the Raman crystal and under the feedback effect of resonant cavity, produce stimulated Raman Scattering, make the output shift of spectral line of laser arrive titanium jewel emission spectrum wave band in addition, the Raman laser produced is exported by the Raman outgoing mirror.
The present invention also can be by the following technical solutions:
The described broadband tunable Raman laser of titanium jewel is pulsed mode.
The described broadband tunable Raman laser of titanium jewel is continuously-running duty.
Described Raman crystal is YVO
4Crystal, Ba (NO
3)
2Crystal, KGW crystal or LiIO
3Any among crystal.
Described Raman crystal is arranged in resonant cavity.
Described Raman crystal is arranged on outside resonant cavity.
The dispersion system that described prism forms the equilateral prism by more than two.
Advantage and good effect that the present invention has are:
The tunable Raman laser of broadband of the present invention titanium jewel, utilize LDA pumping laser gain substance, produce 1064nm laser, produce 532nm laser by frequency-doubling crystal, 532nm laser carries out pumping to titanium gem crystal, produce the wavelength of 1000nm-1100nm, by prism to the selection with speculum, play the effect of wavelength continuously adjustable, after the Raman crystal, because Raman effect plays the frequency displacement effect, finally realize the output of the long wavelength beyond the ti sapphire laser spectral line of emission, the expansion of this laser the output wavelength scope of ti sapphire laser.
The accompanying drawing explanation
Fig. 1 is the index path of the tunable Raman laser of broadband titanium jewel of the present invention.
Embodiment
Referring to drawings and Examples, the present invention will be described in detail.
Fig. 1 is the index path of the tunable Raman laser of broadband titanium jewel of the present invention.
As shown in Figure 1, the tunable Raman laser of broadband of the present invention titanium jewel, comprising: laser total reflection mirror 1, acoustooptic Q-switching 2, semiconductor laser module 3, humorous wave plate 4, frequency-doubling crystal 5, green glow outgoing mirror 6, focus lamp 7, titanium gem crystal 8, Raman speculum 9, Raman crystal 10, Raman outgoing mirror 11, humorous prism is to 12 and titanium jewel completely reflecting mirror 13, and wherein the laser total reflection mirror 1, acoustooptic Q-switching 2, semiconductor laser module 3, humorous wave plate 4, frequency-doubling crystal 5 and green glow outgoing mirror 6 form green (light) laser, the output high-power quasi continuous green light, after green glow output, through focus lamp 7, focus in titanium gem crystal, produce the spontaneous radiation of 700nm-1100nm, and produce the Laser emission of 1000nm-1100nm under the effect of Raman outgoing mirror 11 and titanium jewel completely reflecting mirror 13, by humorous prism to 12 and 13 pairs of wavelength of titanium jewel completely reflecting mirror selected, make the output wave band of laser adjustable continuously in the scope of 1000nm-1100nm, Raman speculum 9 and Raman outgoing mirror 11 form resonant cavity, laser is through Raman crystal 10 and under the feedback effect of resonant cavity, produce stimulated Raman Scattering, make the output shift of spectral line of laser arrive titanium jewel emission spectrum wave band in addition, the Raman laser produced is by 11 outputs of Raman outgoing mirror.
Titanium jewel tunable Raman laser in broadband is pulsed mode or continuously-running duty.
The Raman crystal is YVO
4Crystal, Ba (NO
3)
2Crystal, KGW crystal or Li IO
3Any among crystal.
The Raman crystal can be arranged in resonant cavity, also can be arranged on outside resonant cavity.
The dispersion system that prism forms the equilateral prism by more than two.
In embodiments of the invention, 1064nm laser total reflection mirror 1, acoustooptic Q-switching 2, semiconductor laser module 3, humorous wave plate 4, frequency-doubling crystal 5 and green glow outgoing mirror 6 form green (light) laser, wherein semiconductor laser module 3 is the 50W1064nm laser module, 1064nm laser total reflection mirror 1 is coated with the high-reflecting film of 1064nm, acoustooptic Q-switching 2 is 27MHz, the acoustooptic Q-switching of radio-frequency power 50W, humorous wave plate 4 is coated with the film system that 1064nm is thoroughly high and the 532nm height is anti-, frequency-doubling crystal 5 is ktp crystal, and specification is 4x4x8mm
3Cutting angle is θ=90 °, ψ=23.6 °, the two-sided anti-reflection film that is coated with 1064nm and 532nm, the focal length of focus lamp 7 is 75mm, be coated with the anti-reflection film of 532nm, the FOM value of titanium gem crystal 8 is 300, with Brewster angle cutting, Raman speculum 9 and Raman outgoing mirror 11, formed the Raman laserresonator, Raman crystal 10 is YVO
4Crystal, its Raman frequency shift amount is 860cm
-1, Raman speculum 9 is coated with the anti-reflection film of 1000nm-1100nm and the 1150nm high-reflecting film to 1250nm, and Raman outgoing mirror 11 is coated with the film system of 1050nm to the transmitance 5% of 1250nm.By humorous prism to 12 and 13 pairs of wavelength of titanium jewel completely reflecting mirror selected, can make in the scope of output wave band 1000nm-1100nm of laser adjustable continuously, laser process Raman crystal 10 is under the feedback effect of the resonant cavity of Raman speculum 9 and Raman outgoing mirror 11 formations, produce stimulated Raman Scattering, make the output shift of spectral line of laser arrive titanium jewel emission spectrum wave band in addition, producing 1150nm is exported by Raman outgoing mirror 11 to the Raman laser of 1250nm, the frequency spectrum of its output is the spectral line scope that the titanium jewel self can not produce, expanded the tunable range of ti sapphire laser.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention with preferred embodiment openly as above, yet, not in order to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (7)
1. the tunable Raman laser of broadband titanium jewel, is characterized in that, comprising: laser total reflection mirror (1), acoustooptic Q-switching (2), semiconductor laser module (3), humorous wave plate (4), frequency-doubling crystal (5), green glow outgoing mirror (6), focus lamp (7), titanium gem crystal (8), Raman speculum (9), Raman crystal (10), Raman outgoing mirror (11), humorous prism is to (12) and titanium jewel completely reflecting mirror (13), wherein laser total reflection mirror (1), acoustooptic Q-switching (2), semiconductor laser module (3), humorous wave plate (4), frequency-doubling crystal (5) and green glow outgoing mirror (6) form green (light) laser, the output high-power quasi continuous green light, after green glow output, through focus lamp (7), focus in titanium gem crystal, produce the spontaneous radiation of 700nm-1100nm, and produce the Laser emission of 1000nm-1100nm under the effect of Raman outgoing mirror (11) and titanium jewel completely reflecting mirror (13), by humorous prism, (12) and titanium jewel completely reflecting mirror (13) are selected wavelength, make the output wave band of laser adjustable continuously in the scope of 900nm-1000nm, Raman speculum (9) and Raman outgoing mirror (11) form resonant cavity, laser is through Raman crystal (10) and under the feedback effect of resonant cavity, produce stimulated Raman Scattering, make the output shift of spectral line of laser arrive titanium jewel emission spectrum wave band in addition, the Raman laser produced is exported by Raman outgoing mirror (11).
2. the tunable Raman laser of broadband according to claim 1 titanium jewel, it is characterized in that: titanium jewel tunable Raman laser in broadband is pulsed mode.
3. the tunable Raman laser of broadband according to claim 1 titanium jewel, it is characterized in that: titanium jewel tunable Raman laser in broadband is continuously-running duty.
4. the tunable Raman laser of broadband according to claim 1 titanium jewel, it is characterized in that: the Raman crystal is YVO
4Crystal, Ba (NO
3)
2Crystal, KGW crystal or LiIO
3Any among crystal.
5. according to the tunable Raman laser of the described broadband of claim 1 or 4 titanium jewel, it is characterized in that: the Raman crystal is arranged in resonant cavity.
6. according to the tunable Raman laser of the described broadband of claim 1 or 4 titanium jewel, it is characterized in that: the Raman crystal is arranged on outside resonant cavity.
7. the tunable Raman laser of broadband according to claim 1 titanium jewel, is characterized in that: the dispersion system that prism forms the equilateral prism by more than two.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682186A (en) * | 2015-03-17 | 2015-06-03 | 哈尔滨工程大学 | Laser for realizing 2-micron waveband tuning narrow linewidth laser output |
| CN106169696A (en) * | 2016-08-29 | 2016-11-30 | 暨南大学 | A kind of continuously tunable laser based on stimulated raman scattering |
| CN107069409A (en) * | 2017-01-20 | 2017-08-18 | 西北核技术研究所 | A kind of double-wavelength pulse of exocoel actively Q-switched alternately exports laser aid and method |
| CN110556695A (en) * | 2018-06-03 | 2019-12-10 | 中国科学院大连化学物理研究所 | 2.8 micron wave band wavelength tunable laser |
Citations (3)
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|---|---|---|---|---|
| CN201234058Y (en) * | 2008-06-30 | 2009-05-06 | 山东大学 | Inner chamber type Raman frequency doubling completely solid yellow laser |
| CN102163793A (en) * | 2011-02-25 | 2011-08-24 | 天津梅曼激光技术有限公司 | Multiple extra-cavity frequency conversion ultraviolet laser |
| CN102244345A (en) * | 2011-06-10 | 2011-11-16 | 天津大学 | Tunable titanium jewelry laser of 588nm yellow light pump |
-
2012
- 2012-05-15 CN CN201210148240.7A patent/CN103427327B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201234058Y (en) * | 2008-06-30 | 2009-05-06 | 山东大学 | Inner chamber type Raman frequency doubling completely solid yellow laser |
| CN102163793A (en) * | 2011-02-25 | 2011-08-24 | 天津梅曼激光技术有限公司 | Multiple extra-cavity frequency conversion ultraviolet laser |
| CN102244345A (en) * | 2011-06-10 | 2011-11-16 | 天津大学 | Tunable titanium jewelry laser of 588nm yellow light pump |
Non-Patent Citations (4)
| Title |
|---|
| SCOTT M. SPULER ET. AL: "Raman shifter optimized for lidar at a 1.5μm wavelength", 《APPLIED OPTICS》, vol. 46, no. 15, 20 May 2007 (2007-05-20), pages 2990 - 2995, XP 001541372, DOI: doi:10.1364/AO.46.002990 * |
| Y. F. CHEN: "Compact efficient all-solid-state eye-safe laser with self-frequency Raman conversion in a Nd:YVO4 crystal", 《OPTICS LETTERS》, vol. 29, no. 18, 15 September 2004 (2004-09-15) * |
| Y. T. CHANG ET. AL: "Compact efficient Q-switched eye-safe laser at 1525nm with a double-end diffusion-bonded Nd:YVO4 crystal as a self-Raman medium", 《OPTICS EXPRESS》, vol. 17, no. 6, 3 March 2009 (2009-03-03), pages 4330 - 4335 * |
| 解慧明: "LD侧泵高功率全固态532nm、355nm激光器研究", 《中国博士学位论文全文数据库信息科技辑》, 30 September 2006 (2006-09-30) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682186A (en) * | 2015-03-17 | 2015-06-03 | 哈尔滨工程大学 | Laser for realizing 2-micron waveband tuning narrow linewidth laser output |
| CN106169696A (en) * | 2016-08-29 | 2016-11-30 | 暨南大学 | A kind of continuously tunable laser based on stimulated raman scattering |
| CN107069409A (en) * | 2017-01-20 | 2017-08-18 | 西北核技术研究所 | A kind of double-wavelength pulse of exocoel actively Q-switched alternately exports laser aid and method |
| CN107069409B (en) * | 2017-01-20 | 2020-05-05 | 西北核技术研究所 | Dual-wavelength pulse alternate output laser device and method with external cavity actively adjusting Q |
| CN110556695A (en) * | 2018-06-03 | 2019-12-10 | 中国科学院大连化学物理研究所 | 2.8 micron wave band wavelength tunable laser |
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| CN103427327B (en) | 2016-08-10 |
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