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1 kHz窄脉宽高峰值功率MgO∶LN电光腔倒空Nd∶YAG激光器

MgO∶LN Electro-optic Crystal Cavity-dumped Nd∶YAG Laser for Short Pulse Width and High Peak Power at 1 kHz

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摘要

报道了一种1 kHz窄脉冲宽度、高峰值功率的电光腔倒空1 064 nm全固态激光器.该激光器采用808 nm 脉冲LD侧面泵浦Nd:YAG 晶体棒的双凹型折叠谐振腔结构和同步延迟MgO∶LN晶体横向加压式电光腔倒空技术,通过优化设计谐振腔结构,在脉冲重复频率200 Hz时,获得了最大单脉冲能量46.7 mJ、脉冲宽度4.06 ns、峰值功率11.50 MW的1 064 nm脉冲激光稳定输出,脉冲宽度和能量的峰峰值不稳定度分别为±1.52%和±2.02%;在1 kHz时,最大单脉冲能量达到18.3 mJ,脉冲宽度5.02 ns,峰值功率3.69 MW,脉冲宽度和能量的峰峰值不稳定度分别为±2.75%和±3.52%,激光束因子为3.849和3.868,远场发散角为3.46 mrad和3.55 mrad,束腰直径为1 508.84 μm和1 477.30 μm.

Abstract

An electro-optic cavity-dumped 1064 nm solid state laser with short pulse duration and high peak power at 1 kHz repetition rate was proposed. The Nd∶YAG crystal was side-pumped by an 808 nm pulsed laser diode in a folded biconcave cavity. Transverse voltage addition cavity dumping mechanism realized with a synchronously delayed MgO∶LN crystal was used to generate laser pulses. Output pulses with maximum pulse energy and peak power up to 46.7 mJ and 11.5 MW were obtained, corresponding to 200 Hz repetition rate and 4.06 ns pulse duration at 1 064 nm. Peak to peak instabilities of pulse width and pulse energy were ±1.52% and ±2.02%. At the highest repetition rate of 1 kHz, the measured pulse energy, peak power and pulse duration were 18.3 mJ, 3.69 MW and 5.02 ns. Peak to peak instabilities of pulse duration and pulse energy were ±2.75% and ±3.52%, corresponding to the beam quality factors of 3.849 and 3.868, far field divergence angles of 3.46 mrad and 3.55 mrad, and waist spot diamete of 1 508.84 μm and 1 477.30 μm respectively.

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中图分类号:TN248.1

DOI:10.3788/gzxb20174608.0814001

基金项目:国家自然科学基金(No. 61205114)和陕西省科技统筹创新工程计划项目(No. 2011KTCL01-06)资助

收稿日期:2017-02-27

修改稿日期:2017-04-07

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卢一鑫:西北大学 光子学与光子技术研究所, 光电技术与功能材料省部共建国家重点实验室培育基地, 陕西省全固态激光及应用工程技术研究中心, 西安 710069
白杨:西北大学 光子学与光子技术研究所, 光电技术与功能材料省部共建国家重点实验室培育基地, 陕西省全固态激光及应用工程技术研究中心, 西安 710069
白冰:西北大学 光子学与光子技术研究所, 光电技术与功能材料省部共建国家重点实验室培育基地, 陕西省全固态激光及应用工程技术研究中心, 西安 710069
白晋涛:西北大学 光子学与光子技术研究所, 光电技术与功能材料省部共建国家重点实验室培育基地, 陕西省全固态激光及应用工程技术研究中心, 西安 710069

联系人作者:卢一鑫(bys627@163.com)

备注:卢一鑫(1982-),男,硕士研究生,主要研究方向为全固态激光器技术.

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引用该论文

LU Yi-xin,BAI Yang,BAI Bing,BAI Jin-tao. MgO∶LN Electro-optic Crystal Cavity-dumped Nd∶YAG Laser for Short Pulse Width and High Peak Power at 1 kHz[J]. ACTA PHOTONICA SINICA, 2017, 46(8): 0814001

卢一鑫,白杨,白冰,白晋涛. 1 kHz窄脉宽高峰值功率MgO∶LN电光腔倒空Nd∶YAG激光器[J]. 光子学报, 2017, 46(8): 0814001

被引情况

【1】李建林,雷广智,白杨,白冰,孙延笑. 电光-MoSe2主被动双调Q 946 nm全固态激光器. 光子学报, 2018, 47(5): 514002--1

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