Tm:GdScO3: A promising crystal for continuous-wave and passively Q-switched laser at 2 μm

被引：12

作者：

Li, Shanming ^{[1
]}

Tao, Siliang ^{[1
]}

Zhang, Shuaiyi ^{[4
]}

Cai, Enlin ^{[4
]}

Fang, Qiannan ^{[1
]}

Zhang, Yuhang ^{[1
,2
]}

He, Mingzhu ^{[1
]}

Chen, Guangzhu ^{[1
]}

Cai, Shuang ^{[1
]}

Liu, Jing ^{[3
]}

Xu, Min ^{[1
]}

Zhao, Chengchun ^{[1
]}

Hang, Yin ^{[1
,2
]}

Ye, Xisheng ^{[3
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Lab Micronano Photon & Optoelect Mat & Devices, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai Key Lab All Solid State Laser & Appl Tec, Shanghai 201800, Peoples R China

[4] Qingdao Univ Sci & Technol, Sch Math & Phys, Lab Qingdao, Shandong Adv Optoelect Mat & Technol Engn, Qingdao 266061, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2022年 / 156卷

基金：

中国国家自然科学基金;

关键词：

Tm3+; 2 mu m; Laser crystal; Q-switched; SPECTROSCOPIC PROPERTIES; GROWTH; SNS2; PERFORMANCE; COMPACT;

D O I：

10.1016/j.optlastec.2022.108628

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Thulium-doped orthorhombic gadolinium scandate, Tm:GdScO3, is promising for efficient linear polarized continuous-wave (CW) and passively Q-switched lasers near 2 mu m. The polarized characteristics of different lasing propagation were verified by both the emission spectra and the laser experiments. Under diode pumping at 793 nm, linear polarized lasers of electric field direction (E) parallel to a- and b-axis are obtained with the maximum output power of 1.87 W and 2.00 W and with the slope efficiency of 27.5 % and 28.4 %, respectively. Stable passive Q-switching of the Tm:GdScO3 laser using SnS2 is demonstrated for the first time, to the best of our knowledge. With different output couplers, the 1.99 mu J/460 ns pulses at similar to 2 mu m were achieved with a maximum average output power of 0.175 W and a peak power of 4.32 W. Tm:GdScO3 is promising to be the candidate for 2 mu m ultrashort lasers.

引用

页数：6

共 33 条

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