High-efficiency 1064 nm nonplanar ring oscillator Nd:YAG laser with diode pumping at 885 nm

被引:27
|
作者
Deng, Weiping [2 ,3 ]
Yang, Tao [1 ]
Cao, Jianping [1 ]
Zang, Erjun [1 ]
Li, Liufeng [2 ]
Chen, Lisheng [2 ]
Fang, Zhanjun [1 ]
机构
[1] Natl Inst Metrol, Beijing 100013, Peoples R China
[2] Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
ND-YAG LASER; EMISSION; NOISE; HEAT;
D O I
10.1364/OL.43.001562
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We experimentally demonstrate a monolithic single-frequency nonplanar ring oscillator (NPRO) laser pumped by diode lasers from a thermally excited ground level directly into a metastable level of Nd3+:YAG gain medium. Continuous-wave output power of 4.54 W is obtained at 1064 nm with 7.6 W input at 885 nm, and the slope efficiency is 76.9% at incident power above 2 W. Compared with the 50.7% slope efficiency obtained using 808 nm pumping for the same NPRO, this direct pumping shows a potential advantage in improving the energy efficiency. The observation is consistent with an analysis of the heat generation in both direct and traditional pumping schemes. The power fluctuation is measured to be within 0.8% at 3 W output during a 10 h period. (c) 2018 Optical Society of America
引用
收藏
页码:1562 / 1565
页数:4
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