无源光学谐振腔的设计加工及其在稳频激光器中的应用

The Design and Realization of High Fineness Passive Optical Resonator and Its Application in Lasers’ Frequency Stability

设计和研制了两台自由光谱区为750MHz，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10W级相位关联连续波1064／532nm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1064nm激光器1min的频率漂移量以及4h内功率波动性分别由未锁定状态的21．82MHz和±0．97％降低到锁定条件下的9．84MHz和±0．32％。

The design and processing of the passive controller have been demonstrated, and two Fabry-Per of 750 MHz and fineness of 300 have been realized. optical resonator with high precision temperature ot （F-P） caviti The two F-P es with the free spectral range （FSR） 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%.