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高功率、高效率调Q绿光抽运的钛宝石宽调谐纳秒脉冲激光

High-Power and High-Efficiency Widely Tunable Ti∶sapphire Nanosecond pulsed Laser Pumped by Q-Switched Green Laser

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摘要

自行研制出钛宝石晶体抽运的波长为532 nm的全固态高功率激光器,实现了高功率、高转换效率的可调谐钛宝石激光输出。使用3列重复频率为1 kHz的激光二极管阵列对称式抽运Nd∶YAG晶体,通过调Q及腔内倍频,获得功率为37.8 W、波长为532 nm的抽运光,每个激光二极管的抽运脉冲包络内包含5个调Q脉冲,单脉冲宽度为90 ns,重复频率为5 kHz。采用该绿光抽运钛宝石晶体,获得733.5~871.1 nm波长范围内的连续调谐激光,在771 nm处获得的输出功率最大,为8.26 W,光-光转换效率高达42%,脉冲宽度为14 ns,30 min内输出功率稳定性优于±4.4%。

Abstract

Herein, an all-solid-state widely tunable Ti:sapphire laser pumped by a home-made 532 nm laser with high power and high conversion efficiency is demonstrated. First, a maximum output power of 37.8 W at 532 nm is obtained by Q-switching and intracavity frequency doubling via a Nd∶YAG crystal that is symmetrically pumped by three 1 kHz laser diode (LD) arrays. The envelope of each LD pulse contains five Q-switched pulses with a duration of 90 ns and repetition rate of 5 kHz. Using the green light to pump the Ti∶sapphire crystal, a 733.5-871.1 nm widely tunable laser is then obtained. The maximum output power at 771 nm is 8.26 W, the optical-optical conversion efficiency is 42%, and the pulse duration is 14 ns. Moreover, the output power stability is superior to ±4.4% within 30 min.

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中图分类号:TN248.1

DOI:10.3788/cjl201946.0508018

所属栏目:“超快激光非线性光学”专题

基金项目:国家重点研发项目(2016YFB0402103)、国家重大科研装备研制项目(ZDYZ2012-2)、国家重大科学仪器设备开发专项(2012YQ120048)、国家自然科学重点基金项目(61535013)、中科院关键技术团队项目(GJJSTD20180004)

收稿日期:2019-01-22

修改稿日期:2019-02-20

网络出版日期:2019-02-25

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李隆普:中国科学院理化技术研究所固体激光重点实验室, 北京 100190中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190中国科学院大学, 北京 100049
李玉娇:中国科学院理化技术研究所固体激光重点实验室, 北京 100190中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190中国科学院大学, 北京 100049
宋艳洁:中国科学院理化技术研究所固体激光重点实验室, 北京 100190中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190中国科学院大学, 北京 100049
张申金:中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190
宗楠:中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190
王志敏:中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190
薄勇:中国科学院理化技术研究所固体激光重点实验室, 北京 100190中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190
彭钦军:中国科学院理化技术研究所固体激光重点实验室, 北京 100190
许祖彦:中国科学院理化技术研究所固体激光重点实验室, 北京 100190中国科学院理化技术研究所功能晶体与激光技术重点实验室, 北京 100190

联系人作者:张申金(zhangshenjin@163.com); 宗楠(zongnan@mail.ipc.ac.cn);

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引用该论文

Li Longpu,Li Yujiao,Song Yanjie,Zhang Shenjin,Zong Nan,Wang Zhimin,Bo Yong,Peng Qinjun,Xu Zuyan. High-Power and High-Efficiency Widely Tunable Ti∶sapphire Nanosecond pulsed Laser Pumped by Q-Switched Green Laser[J]. Chinese Journal of Lasers, 2019, 46(5): 0508018

李隆普,李玉娇,宋艳洁,张申金,宗楠,王志敏,薄勇,彭钦军,许祖彦. 高功率、高效率调Q绿光抽运的钛宝石宽调谐纳秒脉冲激光[J]. 中国激光, 2019, 46(5): 0508018

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