Characteristics of single longitudinal mode oscillation of the 2 μm Tm,Ho:YLF microchip laser

被引:32
作者
Nagasawa, C
Suzuki, T
Nakajima, H
Hara, H
Mizutani, K
机构
[1] Tokyo Metropolitan Univ, Dept Elect Engn, Hachioji, Tokyo 1920397, Japan
[2] IHI Co Ltd, Koto Ku, Tokyo 1358732, Japan
[3] Leadintex Inc, Chuo Ku, Tokyo 1030011, Japan
[4] Commun Res Labs, Koganei, Tokyo 1848795, Japan
关键词
microchip laser; Tm; Ho : YLF laser; eye-safe laser; coherent lidar; Doppler lidar;
D O I
10.1016/S0030-4018(01)01599-1
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The lasing condition and frequency stability of the single longitudinal mode oscillation of a diode laser pumped 2 mum Tm,Ho:YLF microchip laser at room temperature are reported. It is shown that the microchip laser with an output mirror of 99.0% reflectivity had better single longitudinal mode performance than that with an output mirror of 99.5% reflectivity. The frequency tuning rate when varying the crystal temperature was estimated to be 1.9 GHz/degreesC. Frequency stability of the microchip laser is examined by the self-beating heterodyne detection method for several delay times between 0.48 and 4.8 mus. It is indicated that the spectral fluctuation is in proportion to the delay time and the increasing rate is 23 kHz/mus. (C) 2001 Published by Elsevier Science B.V.
引用
收藏
页码:315 / 319
页数:5
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