46 W腔内光参量振荡高重复频率2 μm激光器

彭跃峰; 谢刚; 王卫民; 武德勇

中国激光, 2009, 36 (1): 33, 网络出版: 2009-02-10

46 W腔内光参量振荡高重复频率2 μm激光器

Intracavity Optical Parametric Oscillator High-Repetition-Rate 2 μm Laser with 46 W Output Power

论文大纲

彭跃峰 ^*谢刚王卫民武德勇

作者单位

中国工程物理研究院应用电子学研究所, 四川绵阳 621900

激光器 2 μm激光器 KTP晶体光参量振荡 lasers 2 μm laser KTP crystal optical parametric oscillator

摘要

报道了采用1064 nm激光抽运KTP晶体内腔光参量振荡（OPO）技术实现高重复频率、高效率2 μm激光输出的实验结果。理论计算了KTP OPO双谐振抽运阈值, 提出了内腔KTP OPO设计思路。激光器采用两块相同的KTP晶体光轴相向放置以补偿走离效应, KTP晶体按φ=0°,θ=53°切割以获得近简并波长2.128 μm激光输出。在808 nm激光二极管抽运功率为470 W, 声光Q开关工作频率为7.5 kHz的条件下, 获得平均功率46.5 W, 波长2.128 μm激光输出, 光-光转换效率为9.89％, 斜率效率为14.5％, 光束质量M2<2.8。

Abstract

The experimental results of high-repetition-rate and high-efficiency 2 μm laser is demonstrated on intracavity optical parametric oscillator (OPO) in KTP pumped by 1064 nm laser. The pumping threshold of KTP doubly resonant OPO is calculated, and the design method of intracavity KTP OPO is proposed. Walk-off compensation is realized by a pair of identical KTP crystals. When cut at φ=0°,θ=53°, a KTP OPO could get output at near degeneration wavelength of 2.128 μm. The average output power of 46.5 W at 2.128 μm is obtained under the condition of 470 W laser diode pump power at 808 nm and the acoustic-optical Q-switching repetition rate of 7.5 kHz. The optical-optical efficiency is 9.89% , the slope efficiency is 14.5% and the M2 of the output beam is less than 2.8.

参考文献

[1] . S.Lai, P.B.Phua, R.F.Wu et al.. 120-W continuous-wave diode-pumped Tm∶YAG laser[J]. Opt. Lett., 2000, 25(21): 1591-1593.

[2] . . Highly efficient high-power thulium-doped germanate glass fiber laser[J]. Opt. Lett., 2007, 32(6): 638-640.

[3] . Honea, Raymond J. Beach, Steven B. Sutton et al.. 115-W Tm∶YAG diode-pumped solid-state lLaser[J]. IEEE J.Quantum Electron., 1997, 33(9): 1592-1600.

[4] . Jackson, Alex Sabella, Alex Hemming et al.. High-power 83 W holmium-doped silica fiber laser operating with high beam quality[J]. Opt. Lett., 2007, 32(3): 241-243.

[5] . Multiwatt high-reperition-rate 2-μm output from an intracavity KTiOPO4 optical parametric oscillator[J]. Appl. Opt., 2000, 39(9): 1435-1439.

[6] . B.Phua, K.S.Lai, R.F.Wu. Coupled tandem optical parametric oscillator(OPO):an OPO within an OPO[J]. Opt. Lett., 1998, 23(16): 1262-1264.

[7] 鲁燕华, 王卫民, 彭跃峰等.内腔式NdYAG激光抽运KTP双谐振光学参量振荡器[J].中国激光, 2006, 33(增刊):189～191

Lu Yanhua, Wang Weimin, Peng Yuefeng et al.. Intracavity KTP doubly resonant optical parametric oscillator pumped by Nd∶YAG laser[J]. Chinese J.Lasers,2006,33(Suppl.):189～191

[8] 谢刚, 彭跃峰, 鲁燕华等. 23.6 W高效率2 μm激光器[J].中国激光, 2007,34(11):1488～1491

Xie Gang, Peng Yuefeng, Lu Yanhua et al.. High efficiency 23.6 W, 2 μm laser[J]. Chinese J.Lasers,2007,34(11):1488～1491

彭跃峰, 谢刚, 王卫民, 武德勇. 46 W腔内光参量振荡高重复频率2 μm激光器[J]. 中国激光, 2009, 36(1): 33. Peng Yuefeng, Xie Gang, Wang Weimin, Wu Deyong. Intracavity Optical Parametric Oscillator High-Repetition-Rate 2 μm Laser with 46 W Output Power[J]. Chinese Journal of Lasers, 2009, 36(1): 33.

46 W腔内光参量振荡高重复频率2 μm激光器

关于本站 Cookie 的使用提示

全站搜索

46 W腔内光参量振荡高重复频率2 μm激光器

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索