激光与光电子学进展, 2017, 54 (11): 111403, 网络出版: 2017-11-17  

千赫兹亚纳秒径向偏振光

Kilohertz Sub-Nanosecond Radially Polarized Light
作者单位
北京工业大学激光工程研究院, 北京 100124
摘要
利用Nd∶YAG/Cr4+∶YAG键合晶体被动调Q和S波片得到亚纳秒径向偏振光。采用峰值功率为30 W、脉宽为120 μs、重复频率为1 kHz的脉冲半导体激光端面抽运方式,得到了脉冲宽度为878 ps、单脉冲能量为76.8 μJ的调Q激光脉冲输出,其重频不稳定性小于±0.003%,幅值不稳定性小于±3%。然后通过在键合晶体后插入偏振片和S波片的方式,得到纯度大于96%、单脉冲能量为27.5 μJ的亚纳秒径向偏振光。
Abstract
Sub-nanosecond radially polarized light is obtained by using passively Q-switching of Nd∶YAG/Cr4+∶YAG bounding crystal and S-waveplate. The pulsed diode laser end pumping method with peak power of 30 W, pulse width of 120 μs, repetition frequency of 1 kHz, is used to obtain Q-switched laser pulse output with pulse width of 878 ps and single pulse energy of 76.8 μJ. The repetition frequency instability is less than ±0.003% and the amplitude instability is less than ±3%. By inserting the polarizer and S-wave plate after bonding crystal, a sub-nanosecond radially polarized light with purity of more than 96% and single pulse energy of 27.5 μJ is obtained.
参考文献

[1] 李政委, 陈檬, 李港. 侧面抽运Nd∶YAG锁模径向偏振光[J]. 中国激光, 2014, 41(1): 0102006.

    Li Zhengwei, Chen Meng, Li Gang. Side-pumped Nd∶YAG mode-locked radially polarized laser[J]. Chinese J Lasers, 2014, 41(1): 0102006.

[2] 夏克贵, 李建郎. 基于键合晶体的径向偏振固体激光器研究进展[J]. 激光与光电子学进展, 2013, 50(8): 080015.

    Xia Kegui, Li Jianlang. Recent development in radially polarized solid-state laser with composite laser crystal[J]. Laser & Optoelectronics Progress, 2013, 50(8): 080015.

[3] Zhan Q. Cylindrical vector beams: from mathematical concepts to applications[J]. Advances in Optics and Photonics, 2009, 1(1): 1-57.

[4] Niziev V G, Nesterov A V. Influence of beam polarization on laser cutting efficiency[J]. Journal of Physics D: Applied Physics, 1999, 32(13): 1455-1461.

[5] Hnatovsky C, Shvedov V, Krolikowski W, et al. Revealing local field structure of focused ultrashort pulses[J]. Physical Review Letters, 2011, 106(12): 123901.

[6] Liu Y, Cline D, He P. Vacuum laser acceleration using a radially polarized CO2 laser beam[J]. Nuclear Instruments & Methods in Physics Research, 1999, 424: 296-303.

[7] Kim J, Kim D C, Back S H, et al. Demonstration of high lateral resolution in laser confocal microscopy using annular and radially polarized light[J]. Microscopy Research and Technique, 2009, 72(6): 441-446.

[8] Hwang D, Ryu S G, Misra N, et al. Nanoscale laser processing and diagnostics[J]. Applied Physics A, 2009, 96(2): 289-306.

[9] Nakano H. Femtosecond and nanosecond laser peening of stainless steel[J]. Journal of Laser Micro, 2010, 5(2): 175-178.

[10] 刘琪, 孟俊清, 祖继锋, 等. 适于空间应用的高重复频率窄脉冲电光调Q激光器[J]. 中国激光, 2017, 44(6): 0601005.

    Liu Qi, Meng Junqing, Zu Jifeng, et al. High repetition frequency narrow pulse electro-optically Q-switched laser for space applications[J]. Chinese J Lasers, 2017, 44(6): 0601005.

[11] Xia K G, Li J L. Radially polarized and passively Q-switched Nd∶YAG laser with composite structure of gain medium[J]. Chinese Optics Letters, 2011, 9(10): 51-53.

[12] 韩侠辉, 夏克贵, 李桂运, 等. 3.2 ns高峰值功率YAG/Nd∶YAG/Cr4+∶YAG键合晶体被动调Q径向偏振微片激光器[J]. 中国激光, 2015, 42(7): 0702010.

    Han Xiahui, Xia Kegui, Li Guiyun, et al. 3.2 ns high peak power radially polarized pulsed output from passively Q-switched microchip laser with composite structure of YAG/Nd∶YAG/Cr4+∶YAG crystal[J]. Chinese J Lasers, 2015, 42(7): 0702010.

[13] Xiao G, Bass M. A generalized model for passively Q-switched lasers including excited state absorption in the saturable absorber[J]. IEEE Journal of Quantum Electronics, 1997, 33(1): 41-44.

[14] Degnan J J. Optimization of passively Q-switched lasers[J]. IEEE Journal of Quantum Electronics, 1995, 31(11): 1890-1901.

[15] 李斌, 丁欣, 孙冰, 等. 激光二极管抽运Nd∶YAG/Nd∶YVO4共轴双晶体Cr∶YAG被动调Q激光器[J]. 中国激光, 2015, 42(4): 0402003.

    Li Bin, Ding Xin, Sun Bing, et al. Laser-diode-pumped coaxial double crystals Nd∶YAG/Nd∶YVO4 Cr∶YAG passively Q-switched laser[J]. Chinese J Lasers, 2015, 42(4): 0402003.

[16] Lin D, Daniel J M, Gecevicˇius M, et al. Cladding-pumped ytterbium-doped fiber laser with radially polarized output[J]. Optics Letters, 2014, 39(18): 5359-5361.

[17] Ng S P, Tang D Y, Qian L J, et al. Satellite pulse generation in diode-pumped passively Q-Switched Nd∶GdVO4 lasers[J]. IEEE Journal of Quantum Electronics, 2006, 42(7): 625-632.

[18] Niu L, Gao C, Zhu S, et al. Single- and dual-pulse oscillation in a passively Q-switched Nd∶YAG microchip laser[J]. Optics Express, 2011, 19(21): 20628-20633.

[19] Dong J, Ueda K, Yang P. Multi-pulse oscillation and instabilities in microchip self-Q-switched transverse-mode laser[J]. Optics Express, 2009, 17(19): 16980-16993.

任俊杰, 高小强, 陈檬. 千赫兹亚纳秒径向偏振光[J]. 激光与光电子学进展, 2017, 54(11): 111403. Ren Junjie, Gao Xiaoqiang, Chen Meng. Kilohertz Sub-Nanosecond Radially Polarized Light[J]. Laser & Optoelectronics Progress, 2017, 54(11): 111403.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!