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

We study the temporal amplitude stability of a continuous-wave (CW) intracavity frequency-doubled self Raman Nd: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.