Stable high-power Er:YAG ceramic single-frequency laser at 1645 nm

被引：9
|
作者：
Wang, Lei [1 ]
Ye, Qing [2 ]
Gao, Mingwei [2 ]
Gao, Chunqing [2 ]
Wang, Sijia [1 ]
机构：
[1] China Acad Space Technol, Qian Xuesen Lab Space Technol, Beijing 100094, Peoples R China
[2] Beijing Inst Technol, Sch Optoelect, Beijing 100081, Peoples R China
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 13期
基金：
中国国家自然科学基金;
关键词：
NONPLANAR RING OSCILLATOR; ROOM-TEMPERATURE; MU-M; HIGH-EFFICIENCY; OUTPUT; DIODE; YAG;
D O I：
10.1364/OE.24.014966
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A stable high-power single-frequency laser at 1645 nm from a monolithic Er:YAG ceramic nonplanar ring oscillator (NPRO) was demonstrated. 10.7 W single-frequency laser output was obtained with a slope efficiency of 61.2% and an optical efficiency of 52.1% with respect to incident pump power. The laser always stably operated in single-frequency mode with the pump power increasing from threshold to maximum pump power. When the crystal's set temperature changed from 17.2 degrees C to 26.6 degrees C, the Er:YAG ceramic NPRO had stable single-frequency laser output, and the widest continuous tuning range without mode-hoping was 4.5 GHz. The linewidth of the single-frequency laser was 5.75 kHz. The beam quality M-2 factors were 1.23 and 1.24 in x and y directions, respectively. (C) 2016 Optical Society of America
引用
收藏
页码：14966 / 14973
页数：8
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