Stable continuous-wave single-frequency intracavity frequency-doubled laser with intensity noise suppressed in audio frequency region

Gao Ying-Hao¹, Li Yuan-Ji^{1, 2, †}, Feng Jin-Xia^{1, 2}, Zhang Kuan-Shou^{1, 2}

Frequency drift of (a) free running laser and (b) stabilized laser in 5 h.