Abstract
A class of stray-light parasitic oscillation problems observed in high-gain laser systems is attacked by the integral equation method of Selden. The feedback fraction product determined by this method is compared with a simple estimate based on the solid angles of the apertures and is found to differ by a factor lying between (2/π)4 and unity. This factor is computed numerically for all two-rectangular-aperture problems and analytically in special cases. We thus determine the static parasitic oscillation threshold for all these problems and deduce the corrections needed for the simple solid-angle method of computation.
© 1980 Optical Society of America
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