Since the observation of an anomalous behavior of barium titanate in a two-beam coupling experiment by Klein and Valley and the observation of asymmetric coupling gain coefficients with respect to the sense of the c axis, we have reported that the anomalous behavior and the nonsymmetric behavior of the coupling gain may be due to the intensity-dependent absorption coefficient. Models have been proposed to explain the anomalous behavior, but the ...
It is shown experimentally that the nonsymmetric behavior of the beam-coupling gain coefficient of BaTiO3 crystals with respect to the sense of the c axis is caused by an intensity-dependent absorption coefficient. It is also found that the actual coupling gain coefficient is dependent of the intensity, even after it is compensated for by the nonsymmetric component. The temperature dependence of the absorption coefficient is measured. ANNOTATION: Reprint: Intensity-Dependent Absorption ...
A transverse-discharge copper-vapor laser has been developed using a fast flat-plate Blumlein pulse forming circuit. A specific laser energy density of 50 micor J/CC has been achieved. This is an order of magnitude higher than that achieved by conventional copper-vapor lasers. The high electric field to number density ratio allows operation with high temperatures of up to 1800 C and high buffer gas pressures above atmospheric pressure. (Keywords: Transverse discharge, ...
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