Abstract
It is well known that stimulated rotational Raman scattering (SRRS) in atmospheric nitrogen presents a. limitation to the propagation of high-intensity laser radiation through long air paths.1-3 A method that has sometimes been proposed to mitigate this problem in laser fusion facilities is to replace part of the air path with a breathable mixture of oxygen and a monatomic gas such as argon. However, some earlier calculations,4 which have now been extended and verified by experiment, indicate that the peak SRRS gain of oxygen in atmospheric air is approximately 77% that of nitrogen in air at the wavelength of Nd:glass lasers, and increases slightly, to about 80%, at the third harmonic.
© 1996 Optical Society of America
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