【摘要】 用半导体激光 (LD)抽运的声光调QNd∶YVO4 激光器做抽运源 ,实现了准位相匹配的光参量输出 ,其调谐范围为 1 4 36～ 1 7μm。非线性光学介质是多周期极化的LiNbO3 (PPLN)。光参量振荡阈值 10 3μJ(脉宽 2 2ns) ,在抽运光达到阈值 3 3倍的条件下 ,信号光输出能量 4 2 5 μJ ,斜效率 12 5 %。更多还原

【Abstract】 A widely tunable quasi-phase-matched optical parametric oscillator that uses periodically poled LiNbO 3 with a multigrating structure is reported in this paper. With a 1064 nm acousto-optically Q-switched Nd∶YVO 4 pump laser, a tunable IR output from 1.436 μm to 1.7 μm is obtained. The threshold is 10.3 μJ with pulses repetition rate 10 kHz. The maximum output energy of signal is 4.25 μJ with the conversion efficience of 12.5%.更多还原