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LD泵浦翠绿宝石晶体实现760 nm、10.5 W激光输出

10.5 W Laser Output at 760 nm From LD Pumped Alexandrite Crystal

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摘要

翠绿宝石是性能优良的宽带可调谐激光晶体,具有荧光寿命长、饱和能量密度高、吸收带宽较宽以及热力学性能优良等诸多优点。翠绿宝石晶体独特的吸收带表明除了使用闪光灯泵浦,还可以使用蓝光激光二极管(LD)、绿光激光器、黄光激光器、红光LD等多种可见光光源作为泵浦源。其中,基于日渐成熟的高功率红光LD泵浦源的翠绿宝石激光器具有效率高、体积小等优势,逐渐成为固体激光领域的研究热点。利用两台光纤耦合输出的638 nm高功率LD作为泵浦源,使用双端偏振泵浦结构对翠绿宝石晶体进行抽运,实现了中心波长为760 nm、功率达10.5 W的可见光波段激光输出,光-光转换效率为20%。这是目前国内利用红光LD泵浦翠绿宝石晶体实现的最高输出功率。

Abstract

Alexandrite is an excellent broadband tunable laser crystal with many advantages, such as long fluorescence lifetime, high saturation energy density, wide absorption bandwidth, and excellent thermodynamic properties. The unique absorption band of alexandrite crystals shows that besides flash lamp, many visible light sources such as the blue laser diode (LD), green laser, yellow laser, and red LD can be used as pump sources. Among them, the alexandrite laser based on the mature high-power red LD pump source has the advantages of high efficiency and small volume, and has gradually become a hot topic in the field of solid-state laser. Using two fiber-coupled 638 nm high-power LDs as the pump source, a double-ended polarization pumping structure is used to pump the alexandrite crystal to achieve a visible light waveband laser output with a center wavelength of 760 nm and a power of 10.5 W. The optical-to-optical conversion efficiency is 20%. This is currently the highest output power realized by red-diode-pumped alexandrite crystals in domestic researches.

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中图分类号:TN248

DOI:10.3788/CJL202047.1015001

所属栏目:快报

基金项目:国家自然科学基金、教育部联合基金、山东省重点研发计划、山东省自然科学基金、山东大学卓越团队基金、山东大学基本科研业务费、山东大学杰出中青年基金、山东大学齐鲁青年启动基金;

收稿日期:2020-06-24

修改稿日期:2020-07-27

网络出版日期:2013-10-01

作者单位    点击查看

关晨:山东大学信息科学与工程学院山东省激光技术与应用重点实验室, 山东 青岛 266237
丛振华:山东大学信息科学与工程学院山东省激光技术与应用重点实验室, 山东 青岛 266237
刘兆军:山东大学信息科学与工程学院山东省激光技术与应用重点实验室, 山东 青岛 266237
张行愚:山东大学信息科学与工程学院山东省激光技术与应用重点实验室, 山东 青岛 266237
王世武:青岛海泰光电技术有限公司, 山东 青岛 266000
聂奕:青岛海泰光电技术有限公司, 山东 青岛 266000
赵智刚:山东大学信息科学与工程学院山东省激光技术与应用重点实验室, 山东 青岛 266237

联系人作者:刘兆军(zhaojunliu@sdu.edu.cn); 赵智刚(zhaojunliu@sdu.edu.cn);

备注:国家自然科学基金、教育部联合基金、山东省重点研发计划、山东省自然科学基金、山东大学卓越团队基金、山东大学基本科研业务费、山东大学杰出中青年基金、山东大学齐鲁青年启动基金;

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引用该论文

Guan Chen,Cong Zhenhua,Liu Zhaojun,Zhang Xingyu,Wang Shiwu,Nie Yi,Zhao Zhigang. 10.5 W Laser Output at 760 nm From LD Pumped Alexandrite Crystal[J]. Chinese Journal of Lasers, 2020, 47(10): 1015001

关晨,丛振华,刘兆军,张行愚,王世武,聂奕,赵智刚. LD泵浦翠绿宝石晶体实现760 nm、10.5 W激光输出[J]. 中国激光, 2020, 47(10): 1015001

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