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Brief Communications

Divergence of the radiation from a Raman laser with a slowly relaxing active medium

S. B. Kormer, V. D. Nikolaev, V. D. Urlin


Abstract: A theoretical analysis is made of the formation of the angular characteristic of the output radiation from a liquid-nitrogen Raman laser. It is shown that the main mechanism of formation of optical inhomogeneities in the active medium of this laser is the accumulation of vibrationally excited molecules having a high polarizability during the stimulated Raman scattering process. The calculated angular distribution of the output energy agrees with the experimental results.

UDC: 621.378.9:535.375

PACS: 42.55.Mv, 42.65.Cq

Received: 09.06.1978

 English version: Soviet Journal of Quantum Electronics, 1979, 9:2, 220–222