We present a fully quantum model to process the intensity noise reduction of a single-frequency intracavity-doubled laser with an electronic feedback loop connected directly to the pump current of a laser diode. Adding an electronic feedback term to the quantum Langevin equations for a free-running single-frequency-doubling laser yields an analytical expression for the intensity noise spectrum of this system. Our previous experimental results with a Nd:YVO<sub>4</sub>/KTP green laser are basically in agreement with the theoretical calculation.
© 2002 Optical Society of America
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
Jing Zhang, Changde Xie, and Kunchi Peng, "Electronic feedback control of the intensity noise of a single-frequency intracavity-doubled laser," J. Opt. Soc. Am. B 19, 1910-1916 (2002)