A 532 nm single-frequency laser generated from a V-type oscillator configuration with a wedged Nd:YVO₄ crystal and a KTP crystal is reported. An a-cut, 2.at% Nd:YVO₄ crystal with a wedge angle of 10 and a KTP nonlinear crystal composes a novel birefringent filter. By adjusting the incident angle of the fundamental mode in the KTP, the laser can change from single-mode operation to two-mode oscillation. The maximum single-frequency output power of lasers with a 5 mm long KTP and a 7 mm long KTP are 284 and 148 mW, respectively, at pump powers of 2 and 1.1 W. The corresponding optical-to-optical conversion efficiencies are 14.2% and 13.5%. For the laser configuration with a 5 mm long KTP, the single-frequency operation at a pump power of 2 W is maintained within the temperature range of 18 C to 24 C, and the measured wavelength drift rate with the temperature is approximately 0.071 nm C⁻¹.

据报道，532 nm 单频激光器由 V 型振荡器配置产生，具有楔形 Nd:YVO ₄晶体和 KTP 晶体。A 型切割，2.at% Nd:YVO ₄楔角为 10°的晶体和 KTP 非线性晶体构成了一种新型的双折射滤光片。通过调整KTP中基模的入射角，激光器可以从单模工作转变为双模振荡。5 mm长KTP和7 mm长KTP激光器的最大单频输出功率分别为284和148 mW，泵浦功率为2 W和1.1 W，对应的光光转换效率为14.2%和 13.5%。对于具有 5 mm 长 KTP 的激光器配置，在 2 W 泵浦功率下的单频操作保持在 18 C 至 24 C 的温度范围内，并且测得的波长随温度漂移率约为 0.071 nm C ^-1。