关键词: 自拉曼激光/
连续波/
共振泵浦/
谐振腔结构设计
English Abstract
Research and design of continuous-wave Nd:YVO4 self-Raman laser in-band pumped by a wavelength-locked laser diode
Zhang Xin1,Zhang Yun-Chuan1,
Li Jian1,
Li Ren-Jie1,
Song Qing-Kun1,
Zhang Jia-Le1,
Fan Li1,2
1.College of Physics Science and Technology, Institute of Applied Photonic Technology, Yangzhou University, Yangzhou 225002, China;
2.National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China}
Fund Project:Project supported by the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20130453) and the State Key Laboratory for Solid State Microstructures, Nanjing University, China (Grant No. M29027).Received Date:14 April 2017
Accepted Date:10 July 2017
Published Online:05 October 2017
Abstract:In this paper, a continuous-wave all-solid-state Nd:YVO4 self-Raman laser in-band pumped by a wavelength-locked laser diode at 878.9 nm is theoretically investigated in detail. Considering the thermal lens effect in the laser crystal, cavity mode parameters are calculated for several output couplers with different radii of curvature, by employing the standard ABCD matrix approach and equivalent G parameter method. The influence of cavity structure on the output characteristic of the Raman laser is investigated by analyzing mode matching between the pump and the fundamental beams, as well as the fundamental intensities in the Raman crystal. This provides theoretical explanations for the experimental results, and based on the analysis above, laser cavity is optimized. Finally, a highest Raman output of 5.3 W is obtained at 1175 nm, corresponding to a diode-to-Stokes optical conversion efficiency of 20%.
Keywords: self-Raman laser/
continuous-wave/
in-band pumping/
design of laser cavity
