用于千瓦级薄片激光器的Yb:LuAG的热学和激光特性

Thermal and laser properties of Yb:LuAG for kW thin disk lasers.

作者信息

Beil Kolja, Fredrich-Thornton Susanne T, Tellkamp Friedjof, Peters Rigo, Kränkel Christian, Petermann Klaus, Huber Günter

机构信息

Institute of Laser-Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.

出版信息

Opt Express. 2010 Sep 27;18(20):20712-22. doi: 10.1364/OE.18.020712.

DOI:10.1364/OE.18.020712

PMID:20940967

Abstract

Thin disk laser experiments with Yb:LuAG (Yb:Lu(3)Al(5)O(12)) were performed leading to 5 kW of output power and an optical-to-optical efficiency exceeding 60%. Comparative analyses of the laser relevant parameters of Yb:LuAG and Yb:YAG were carried out. While the spectroscopic properties were found to be nearly identical, investigations of the thermal conductivities revealed a 20% higher value for Yb:LuAG at Yb(3+)-doping concentrations of about 10%. Due to the superior thermal conductivity with respect to Yb:YAG, Yb:LuAG offers thus the potential of improved performance in high power thin disk laser applications.

摘要

利用镱掺杂的钇镥铝石榴石（Yb:Lu(3)Al(5)O(12)）进行了薄片激光器实验，实现了5千瓦的输出功率以及超过60%的光光效率。对Yb:LuAG和Yb:YAG的激光相关参数进行了对比分析。虽然发现它们的光谱特性几乎相同，但对热导率的研究表明，在约10%的Yb(3+)掺杂浓度下，Yb:LuAG的热导率比Yb:YAG高20%。由于Yb:LuAG相对于Yb:YAG具有更高的热导率，因此它在高功率薄片激光器应用中具有性能提升的潜力。