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掠入射Nd:YVO4板条结构皮秒激光放大器的实验研究

Experimental Study of Picosecond Laser Amplifier Based on Grazing Incidence Nd:YVO4 Slab Geometry

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Abstract

The experimental study of the double-pass grazing incidence Nd:YVO4 slab amplifier is carried out based on a saturable absorber and passively Q-switched microchip seed laser. The microchip laser with pulse duration of 90 ps, repetition rate of 100 kHz and beam quality factor M2=1.16 acts as seed laser with varying output power from 100 μW to 10 mW. The new liquid pure metal grease and the traditional thin indium foil are used to conduct as the thermal contact material of the bounce amplifier, respectively. Experimental results show that the liquid pure metal grease conducted as the thermal contact material can significantly reduce the temperature of the slab pump face. An output power of 13 W is obtained with the liquid pure metal grease conducted as the thermal contact material for 10 mW seed power with pump power of 55 W at an optical-optical efficiency of 23%, achieving pulse peak power of 1.2 MW and pulse energy of 130 μJ. The beam quality factor is M2x=1.30,M2y=1.28.

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中图分类号:TN248.1

DOI:10.3788/cjl201643.1101004

所属栏目:激光物理

基金项目:国家自然科学基金(61575172)、浙江省自然科学基金(LZ15F050001)、中国工程物理研究院高能激光科学与技术重点实验室开放基金(2014HEL04)、中央高校基本科研业务费专项资金

收稿日期:2016-07-01

修改稿日期:2016-08-03

网络出版日期:--

作者单位    点击查看

沈利沣:浙江大学现代光学仪器国家重点实验室, 浙江 杭州 310027
姜洪波:浙江大学现代光学仪器国家重点实验室, 浙江 杭州 310027
赵志刚:浙江大学现代光学仪器国家重点实验室, 浙江 杭州 310027
刘 斌:浙江大学现代光学仪器国家重点实验室, 浙江 杭州 310027
王春华:浙江大学现代光学仪器国家重点实验室, 浙江 杭州 310027
项 震:浙江大学现代光学仪器国家重点实验室, 浙江 杭州 310027
刘 崇:浙江大学现代光学仪器国家重点实验室, 浙江 杭州 310027

联系人作者:沈利沣(shenlifengzero@zju.edu.cn)

备注:沈利沣(1991—),男,硕士研究生,主要从事固体激光器方面的研究。

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