Abstract

Kinetic equations have been formulated and solved to assess the significance of inhomogeneous broadening and rotational relaxation on a class of molecular flow lasers. In particular, criteria for the region of validity of a rate equation formalism are obtained, and the effect of departures from a Boltzmann distribution of rotational states is discussed. This investigation extends previous work by Cool on the gas flow molecular laser to include collisional diffusion in velocity space as well as finite rotational relaxation. Both high and low pressure effects on laser performance characteristics are studied in detail.

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