Abstract

The pulsed NH3 laser optically pumped by the TEA CO2 laser is one of the most powerful and efficient sources of coherent radiation in the 11-13-μm mid-IR region. Its performance is often enhanced by the addition of buffer gases, which permits line-tunable operation at high pressures.1,2 In this paper we accurately predict NH3 laser dynamics over a wide range of conditions with a rate-equation model that we have developed. The two major features embodied in the model are the assumption of rapid thermalization of the rotational populations and the absence of vibrational energy transfer between ortho-NH3 and para-NH3.

© 1984 Optical Society of America

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