Abstract
The generation of a 16 μm laser beam through cascading in a downstream-mixing CO2 gasdynamic laser is studied. To simulate actual lasing action, a generalized, two-dimensional, flow-radiation-coupled power extraction model for a gasdynamic laser is used. Also, to model the cascade process a new four-mode CO2-N2 vibrational kinetic model has been proposed. The steady-state intensity obtained for an exclusive 9.4 μm transition is of the order of 5×107 W/m2. In the cascade mode of operation the steady-state intensities for 9.4 and 16 μm transitions of the order of 5×107 W/m2 and 1.0×106 W/m2, respectively, have been obtained.
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