Abstract

Relative intensity fluctuations in single-mode class B lasers, i.e., a laser diode (LD) and a microchip $\mathrm{Nd}:{\mathrm{YVO}}_4$ 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

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