970纳米二极管泵浦Yb:YAG和Yb:LuAG激光器的温度依赖性及优化

Temperature dependence and optimization of 970-nm diode-pumped Yb:YAG and Yb:LuAG lasers.

作者信息

Kasamatsu T, Sekita H, Kuwano Y

机构信息

NEC Corporation, 4-1-1 Miyazaki, Miyamae-ku, Kawasaki, Kanagawa 216, Japan.

出版信息

Appl Opt. 1999 Aug 20;38(24):5149-53. doi: 10.1364/ao.38.005149.

DOI:10.1364/ao.38.005149

PMID:18324010

Abstract

We have investigated the temperature dependence of output performances for 970-nm diode-pumped Yb:YAG (Yb(3+):Y(3)Al(5)O(12)) and Yb:LuAG (Yb(3+):Lu(3)Al(5)O(12)) lasers over the wide temperature range from 80 to 310 K. Temperature-optimized operation was experimentally demonstrated at around 160 K and was theoretically confirmed by taking into account the absorption spectra change of Yb crystals at low temperatures. Cooling the crystal to below 160 K caused a narrowing of the absorption bandwidth and led to a decrease in output power and efficiency.

摘要

我们研究了970纳米二极管泵浦Yb:YAG（Yb(3+):Y(3)Al(5)O(12)）和Yb:LuAG（Yb(3+):Lu(3)Al(5)O(12)）激光器在80至310 K宽温度范围内输出性能的温度依赖性。在约160 K时通过实验证明了温度优化操作，并通过考虑Yb晶体在低温下的吸收光谱变化从理论上得到了证实。将晶体冷却至160 K以下会导致吸收带宽变窄，并导致输出功率和效率降低。