Study of Amplitude Noise in a Continuous-Wave Intracavity Frequency-Doubled Raman Laser

摘要

We study the temporal amplitude stability of a continuous-wave (CW) intracavity frequency-doubled self-Raman ${rm Nd}{:}{rm GdVO}_{4}$ laser (yellow laser), and compare this with that of a CW intracavity frequency-doubled Nd-doped laser (green laser). Both experimental and theoretical results indicate that, while at high pump powers the yellow laser shows strong amplitude fluctuations (peak to peak ${>}20{%}$) similar to that in the simple green laser, for lower powers there is a regime where the yellow laser exhibits low (peak to peak ${<}1{%}$) amplitude noise.