Abstract
An experimental study was made of nondegenerate parametric amplification of the ω3→ω2 + ω2 type. Spatial and temporal intensity profiles with different ratios of the seed signal and pump signal energies were formed independently in a high-power two-channel laser-aperture neodymium-glass laser system. Optimal profiling of the intensities of the interacting waves made it possible to achieve 67% conversion of the pump wave energy into parametric waves. The spectral and angular characteristics of the radiation were then the same as the parameters of the seed signal. Careful recording and approximation of the intensity profiles of the interacting waves yielded good agreement between the theory and the experiments.
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