摘要
利用激光二极管端面泵浦Nd∶YAG晶体,通过LBO非线性晶体腔内倍频,利用双折射滤波器进行选频,最终获得稳定的低噪声561 nm激光输出。LBO晶体尺寸为2 mm×2 mm×10 mm,采用Ⅰ类相位匹配切割。抽运功率为4.8W时,低噪声561 nm激光最大输出功率为70 m W,光-光转换效率为1.46%。作为对比,再利用布氏片进行选频,得到的561 nm激光的噪声高于利用双折射滤波器进行选频时的噪声,实验结果与理论分析一致。
Using a laser diode end pumped Nd ： YAG crystal, LBO nonlinear crystal intracavity frequency doubling, birefringent filter（BF） frequency-selecting, a stable 561 nm laser output with low noise is obtained. The size of LBO crystal is 2 mm ×2 mm × 10 mm, and the crystal is cut with type I phase matching. The 561 nm laser maximum output power with low noise is 70 mW when the pump power is 4. 8 W, and the optical to optical conversion efficiency is 1.4%. As a contrast, using frequency-selecting with BP, the obtained noise of 561 nm laser is higher than that by BF. The experimental results and theoretical analysis are consistent.
出处
《激光与红外》
CAS
CSCD
北大核心
2015年第10期1206-1210,共5页
Laser & Infrared
基金
2011年高等学校博士学科点专项科研基金联合项目(No.20112216110006)资助
