Abstract

A simple theory is presented to study the operation state of a two-section semiconductor laser by the consideration of the difference between the two photon densities in the two sections. It is shown that the ratio of the two photon densities in the two sections can be 1.6 or even larger and is a function of the reflectivity of the laser facets. This photon-density ratio affects the photon-density level of bistable or pulsation operation, as well as the width of the bistable-operation range of the laser. However, the threshold condition and the stable-operation criterion of the laser are not affected.

© 1995 Optical Society of America

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