Author Affiliations
Abstract
1 School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
2 College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
A high-average-power, high-repetition-rate dual signal optical parametric oscillator based on periodically poled MgO-doped lithium niobate (PPMgLN) with a phase-reversed grating is reported. The pump laser is an acousto-optically Q-switched Nd:YVO4 laser with a maximum average power of 7.6 W. When the repetition rate is 50 kHz and the pulse width of the pump source is 23 ns, the maximum average dual signal output power is about 1.9 W, leading to a conversion efficiency of 25%. Over a 30-min interval, the instability of the signal power measured is less than 0.5%.
准相位匹配 光学参量振荡 双信号光运转 190.2620 Harmonic generation and mixing 190.4410 Nonlinear optics, parametric processes 190.4970 Parametric oscillators and amplifiers Chinese Optics Letters
2010, 8(5): 505
1 合肥工业大学 仪器科学与光电工程学院,安徽 合肥 230009
2 天津大学 精密仪器与光电子工程学院,天津 300072
利用声光调Q Nd:YVO4激光器输出的1064 nm激光抽运周期极化掺氧化镁LiNbO3(PPMgLN)晶体,实现了角度调谐的双信号光运转准相位匹配(QPM)光参量输出。PPMgLN晶体长50 mm,具有周期相位反转结构,极化周期29.6 μm,相位反转周期6.808 mm,利用外加电场极化法制作,极化沿晶体的z向进行。在晶体外部旋转角度为0°-8°范围内,实现了双信号光波在1474.8-1479 nm和1489.5-1495.2 nm波段的快速调谐输出。对角度调谐准相位匹配进行了相应的理论分析,理论结果与实验值较为一致。
非线性光学 光学参量产生 准相位匹配 双信号光运转 角度调谐
