设计和研制了两台自由光谱区为750 MHz, 精细度300的高精度控温无源光学谐振腔, 分别用于监测自制的双10 W级相位关联连续波1 064/532 nm双波长激光器的单频特性和作为稳频系统的参考腔, 通过将双波长激光器的频率锁定到参考腔, 进一步提升双波长激光器的输出频率和功率稳定性。单频1 064 nm激光器1 min的频率漂移量以及4h内功率波动性分别由未锁定状态的21.82 MHz和±0.97%降低到锁定条件下的9.84 MHz和±0.32%。

The design and processing of the passive optical resonator with high precision temperature controller have been demonstrated, and two Fabry-Perot (F-P) cavities with the free spectral range (FSR) of 750 MHz and fineness of 300 have been realized.The two F-P cavities are utilized in monitoring the single-frequency operation characteristic of a homemade dual-wavelength 1 064/532 nm laser with more than 10 W output power at each wavelength and act as the reference cavity for frequency stabilization system to further enhance frequency and output power stability of the dual-wavelength laser, respectively.With the frequency stabilization system, the frequency shift of the dual-wavelength laser at 1 064 nm in 1 min reduces from 21.82 MHz to 9.84 MHz, and the output power fluctuation within 4h decreases from ±0.97% to ±0.32%.