中文摘要：

报道了利用半导体激光器（LD）端面抽运的钒酸钇（Nd∶YVO4）激光器作为抽运源,多周期周期极化铌酸锂（PPLN）为非线性晶体的连续波内腔光学参量振荡器（OPO）及基于此的连续波可调谐橙红光光源。为实现OPO的连续波运转,采用了内腔抽运方式,并对谐振腔进行了合理设计。实验得到调谐范围1406-1513 nm的信号光及3.66-4.1μm的中红外闲频光连续波输出,在10.9 W的LD功率下,最大输出功率分别为输出波长1500 nm处的820 mW和3.86μm处的195 mW,相对LD功率的转换效率分别为7.5%和1.8%。利用BaB2O4（BBO）晶体对OPO的1064 nm抽运光和1.4-1.5μm信号光进行内腔和频,获得了调谐范围606-624 nm的橙红波段连续波输出,最大输出功率为624 nm处的120 mW,转换效率为1.1%。

英文摘要：

We report a continuous-wave tunable optical parametric oscillator（OPO） which is intra-cavity pumped by a laser diode（LD） end-pumped Nd∶YVO4 laser and utilize a periodically-poled lithim niobate（PPLN） crystal as nonlinear medium.Cavities are carefully designed and intra-cavity pumping schemes are adopted to realize continuous-wave operation.1406-1513 nm signal output and 3.66-4.1 μm mid-infrared idler output are obtained with the maximum power of 820 mW at 1500 nm and 195 mW at 3.86 μm,corresponding conversion efficiencies versus 10.9 W LD power are 7.5% and 1.8%.606-624 nm continuous-wave tunable orange-red output is also obtained by intra-cavity sum-frequency generating of 1064 nm pump wave and 1.4-1.5 μm signal wave of the OPO in a BBO crystal.The maximum output power is 120 mW at 624 nm,with conversion efficiency of 1.1%.