Crystal Growth, Spectroscopic Characterization
and Laser Operation of Tm³⁺ and Ho³⁺ Codoped LiLuF₄ Crystal¹

C. C. Zhao^{a, b}, Y. Hang^a, *, L. H. Zhang^a, X. M. He^a, J. G. Yin^{a, b},
J. Gong^{a, b}, T. Yu^c, and W. B. Chen^c

^a Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics,
Chinese Academy of Sciences, Shanghai 201800, China

^b Graduate School of Chinese Academy of Sciences, Beijing 100039, China

^c Research Center of Space Laser Information Technology, Shanghai Institute of Optics and Fine Mechanics,
Chinese Academy of Sciences, Shanghai 201800, China

*e-mail: yhang@siom.ac.cn

Received September 11, 2011; in final form, September 22, 2011; published online December 28, 2011

Abstract—Laser crystal Tm³⁺ and Ho³⁺ codoped LiLuF₄ with high optical quality was grown by Czochralski
technique. Its absorption and fluorescence spectra were investigated. A continuous wave output power of
1.12W at 2066 nm was obtained with a slope efficiency of 24% by use of diode pumping. In the Q-switched
mode, a slope efficiency of 18.9% and a maximum average power of 0.65 W were obtained.

DOI: 10.1134/S1054660X12020296

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