Relative intensity fluctuations in single-mode class B lasers, i.e., a laser diode (LD) and a microchip Nd YVO4 solid-state laser (SSL), were examined. Experimental observations revealed significant difference in the characteristics of the LD and the SSL. A stochastic laser model and the Fokker–Planck equation approach were used, and reduced moment equations were developed. A close agreement was achieved between the theoretical and experimental results. As indicated by the theoretical analysis, the intrinsic parameter of the lasers; i.e., the time ratio between the lifetimes of the carrier density (population inversion) and the photons, is crucial to fluctuation dynamics.
© 2002 Optical Society of America
(140.3460) Lasers and laser optics : Lasers
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3580) Lasers and laser optics : Lasers, solid-state
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
Tsong-Shin Lim, Jyh-Long Chern, and Kenju Otsuka, "Relative intensity fluctuations of single-mode class B lasers," Opt. Lett. 27, 1037-1039 (2002)