Abstract
The Short term frequency stability characteristics of 2 µm single frequency Solid-state lasers was investigated. The two laser systems of 2 µm single longitudinal mode oscillation Tm, Ho:YLF microchip laser and Ho:YAG NPRO laser were designed and constructed. The Short term frequency stability of these two laser were measured with the fiber delay self-beating heterodyne method. The 3dB width of the relative frequency fluctuation of Tm, Ho:YLF microchip laser and Ho:YAG NPRO laser were measured to be 895 and 736 Hz with 500 m fiber optical (2.5 µs delay). The proportional relation between the lasing fluctuation and the delay time were 358 and 263 Hz/µs, respectively. The vibration experiment was presented and it indicated that the NPRO Ho:YAG was more terrible to the influence of vibration, which is important in the practical application of wind measurement lidar.
Published Version
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