1.9 ns LD端面泵浦Nd:YVO4/GaAs被动调Q激光器

doi:10.3976/j.issn.1002-4026.2015.02.015

山东科学 ›› 2015, Vol. 28 ›› Issue (2): 87-82.doi: 10.3976/j.issn.1002-4026.2015.02.015

1.9 ns LD端面泵浦Nd:YVO4/GaAs被动调Q激光器

李健，胡文，张志龙，许永娜

山东师范大学物理与电子科学学院，山东省光学与光子器件技术重点实验室,山东济南 250014

收稿日期:2014-12-04 出版日期:2015-04-20 发布日期:2015-04-20
作者简介:李健（1963-）男，教授，研究方向为全固态激光器件与非线性光学。Email：lijian@sdnu.edu.cn
基金资助:
国家自然科学基金（61205174）

1.9 ns LDendpumped passively Qswitched Nd:YVO4 laser with GaAs

LI Jian， HU Wen ， ZHANG Zhi-long ， XU Yong-na

Shandong Provincial Key Laboratory of Optics and Photonic Device, College of Physics and Electronics,Shandong Normal University, Jinan 250014, China

Received:2014-12-04 Online:2015-04-20 Published:2015-04-20

摘要/Abstract

摘要： 研究了激光二极管端面泵浦Nd:YVO4/GaAs被动调Q激光器的输出特性。在连续光运转和调Q运转情况下，得到的激光最高输出斜效率分别为41.5%和11.4%。用一片700 μm厚的GaAs薄片作为饱和吸收体，对1.06 μm激光透过率为6.5%的平面镜作为15 mm谐振腔的耦合输出镜，得到的最短脉宽仅为1.9 ns。在泵浦功率由0.5 W上升到5.6 W的过程中，用T为6.5%和20%的输出镜得到的脉冲重复频率从18.7和23.9 kHz分别上升到53和41.3 kHz。两种输出镜透过率下得到的最大脉冲能量分别为8.5和13.3 μJ，相应的峰值功率高达4.45和4.6 kW。此激光器具有非常高的振幅稳定性，在高泵浦功率下调Q脉冲振幅波动小于3%。

关键词: 被动调Q, Nd:YVO4, LD端面泵浦, 脉冲激光器

Abstract: We addressed the output properties of adiodeendpumped Nd:YVO4/GaAs laser passively Qswitched with GaAs saturable absorber.The maximum output slope efficiencies of the continuous wave (CW)and Qswitching operation were 41.5% and 11.4%. We obtained the shortest pulse width of only 1.9 ns with a 700μm thick GaAs wafer as a satuable absorber and a plane mirror of T=6.5% as a output coupler (OC) of a 15 mm long laser cavity. Pulse repetition frequency acquired by T=6.5% and T=20% OCs respectively increased from 18.7 and 23.9 kHz to 53 and 41.3 kHz in the increasing process of absorbed pumping power from 0.5 to 5.6 W. The biggest pulse energy obtained through these two OCs was 8.5 and 13.3 μJ, whose peak powers were 4.45 and 4.6 kW. This Qswitched Nd:YVO4/GaAs laser had very high amplitude stability, whose Qswitched pulse amplitude fluctuation was less than 3% for high pump power.

Key words: LDendpumped, passively Qswitched, Nd:YVO4, pulsed laser

中图分类号:

O437.4

李健,胡文，张志龙，许永娜. 1.9 ns LD端面泵浦Nd:YVO4/GaAs被动调Q激光器[J]. 山东科学, 2015, 28(2): 87-82.

LI Jian， HU Wen,ZHANG Zhilong,XU Yongna. 1.9 ns LDendpumped passively Qswitched Nd:YVO4 laser with GaAs[J]. SHANDONG SCIENCE, 2015, 28(2): 87-82.

参考文献

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1.9 ns LD端面泵浦Nd:YVO4/GaAs被动调Q激光器

1.9 ns LDendpumped passively Qswitched Nd:YVO4 laser with GaAs

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