A Comparative Study on Diode-Pumped Single-Frequency
Tm:YAG and Tm:GdVO₄ Lasers¹

F. Chen*, L. X. Yu, X. L. Liu, B. Q. Yao, G. Li, C. H. Zhang, Y. Z. Wang, and Y. L. Ju

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China

*e-mail: chenfej@163.com

Received July 19, 2011; in final form, July 27, 2011; published online November 28, 2011

Abstract—In this paper, we present experimental results concerning on the laser characteristics of Tm:YAG
laser and Tm: GdVO₄ laser. At room temperature, the maximum output power of Tm:YAG laser and Tm:GdVO₄
laser is 210 and 145 mW, respectively. High efficiency can be achieved for both lasers at room temperature.
Nevertheless, compared with Tm:GdVO₄ laser, Tm:YAG laser can operate on single frequency with high power
easily. As much as 60 mW of 2013.9 nm single-longitudinal-mode (SLM) laser was achieved for Tm:YAG laser.
For Tm:GdVO₄ laser 51 mW of 1919.7 nm SLM laser was achieved. The SLM Tm:YAG laser is better for using
as a seed laser for coherent wind measurements and differential absorption LIDAR systems.

DOI: 10.1134/S1054660X12010045

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