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千赫兹亚纳秒径向偏振光

Kilohertz Sub-Nanosecond Radially Polarized Light

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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.

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中图分类号:TN248.1

DOI:10.3788/lop54.111403

所属栏目:激光器与激光光学

基金项目:北京市基金重点项目(KZ201510005001)

收稿日期:2017-06-08

修改稿日期:2017-06-19

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任俊杰:北京工业大学激光工程研究院, 北京 100124
高小强:北京工业大学激光工程研究院, 北京 100124
陈 檬:北京工业大学激光工程研究院, 北京 100124

联系人作者:陈檬(chenmeng@bjut.edu.cn)

备注:任俊杰(1990-),男,硕士研究生,主要从事被动调Q固体激光器方面的研究。

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引用该论文

Ren Junjie,Gao Xiaoqiang,Chen Meng. Kilohertz Sub-Nanosecond Radially Polarized Light[J]. Laser & Optoelectronics Progress, 2017, 54(11): 111403

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

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