Liu Jianli, Wang Zhiyong, Li Hong, Liu Qin, Zhang Kuanshou
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan, China.
Opt Express. 2011 Mar 28;19(7):6777-82. doi: 10.1364/OE.19.006777.
Based on a polarized and dual-end pumping scheme and a ring resonator, a stable, high power and high beam quality continuous-wave single-frequency Nd:YVO4 green laser directly pumped at 880 nm has been fabricated. A measured maximum output power of 12 W at 532 nm was obtained with a conversion efficiency of 23.1%. The stability of the output was better than ±0.5% and no mode hopping was observed over a period of five hours. The output beam was almost diffraction limited with a measured beam quality of M2(x)=1.03 and M2(y)=1.02. The intensity noise reached the shot noise limit (SNL) for analysis frequencies above 3.5 MHz, and the phase noise was 1.3 dB above the SNL in the range of 2 to 20 MHz.
基于偏振和双端泵浦方案以及环形谐振器，制造出了一种稳定、高功率且高光束质量的连续波单频Nd:YVO4绿光激光器，该激光器由880nm直接泵浦。在532nm处测得的最大输出功率为12W，转换效率为23.1%。输出稳定性优于±0.5%，在五小时内未观察到模式跳变。输出光束几乎为衍射极限，测得的光束质量M2(x)=1.03，M2(y)=1.02。对于高于3.5MHz的分析频率，强度噪声达到散粒噪声极限（SNL），在2至20MHz范围内，相位噪声比SNL高1.3dB。
