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本文采用包含有非线性晶体的四镜8字环形谐振腔结构,通过选取输出耦合镜的透射率和分析铽镓石榴石(TGG)晶体热透镜效应的影响,实现了输出功率达双10瓦级具有相位关联特性的单频连续波1 064/532nm双波长激光器。实验中通过采用透射率为4%的输出耦合镜和长度为20 mm的三硼酸锂(LBO)晶体,实现了输出功率分别为11.30 W和11.23 W的1 064/532nm双波长激光输出,线宽分别为165kHz和330kHz,对应的长期功率稳定性在3小时内分别优于±0.68%和±0.56%,光束质量因子M2均小于1.1。该种具有相位关联特性的双波长激光器可以用来制备稳定的双色光阱和泵浦多个光学参量(OPO)实现多组份纠缠态光场的产生。
In this paper, a quadrupole 8-ring resonator with nonlinear crystal is adopted. By choosing the output coupling mirror’s transmissivity and analyzing the thermal lens effect of terbium gallium garnet (TGG) crystal, the output power of double 10-watt Single Frequency Continuous Wave 1 064 / 532nm Dual Wavelength Laser with Phase Correlation. In the experiment, the output of 1 064 / 532nm dual-wavelength laser with output power of 11.30 W and 11.23 W was achieved by using an output coupling mirror with 4% transmittance and lithium boronic acid (LBO) crystal with a length of 20 mm. The linewidth Respectively 165kHz and 330kHz, the corresponding long-term power stability is better than ± 0.68% and ± 0.56% respectively in 3 hours, and the beam quality factor M2 is less than 1.1. This dual wavelength laser with phase correlation can be used to prepare a stable two-color optical trap and pump multiple optical parameters (OPOs) to generate multi-component entangled states.