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

Analysis of the dynamic characteristics of parasitic oscillation

H. Daido, S. Ido, M. Matoba, S. Nakai, and C. Yamanaka
Appl. Opt. 19(18) 3181-3183 (1980)

Gain Thresholds for Diffuse Parasitic Laser Modes

Arthur N. Chester
Appl. Opt. 12(9) 2139-2146 (1973)

Transverse mode-locking by short pulse injection in large aperture TEA CO₂ oscillators

M. Piché and P.-A. Bélanger
Appl. Opt. 19(1) 127-135 (1980)

Parasitic Suppression in Large Aperture Nd:Glass Disk Laser Amplifiers

J. A. Glaze, S. Guch, and J. B. Trenholme
Appl. Opt. 13(12) 2808-2811 (1974)

TIR-1 carbon dioxide laser system for fusion

V. A. Adamovich, V. N. Anisimov, E. A. Afonin, V. Yu. Baranov, V. L. Borzenko, S. M. Kozochkin, D. D. Malyuta, Yu. A. Satov, A. Yu. Sebrant, Yu. B. Smakovski, A. N. Starostin, A. P. Streltzov, V. M. Petryakov, and S. F. Chalkin
Appl. Opt. 19(6) 918-923 (1980)