Study of Degenerate Four-Wave Mixing in Germanium and Rhenate-Doped Potassium Chloride at Carbon Dioxide Laser Wavelengths

摘要

Theoretical and experimental studies of degenerate four-wave mixing (DFWM) by three different mechanisms are presented. These are the nonlinear index of refraction of a lossless, Kerr-like medium, the saturable absorption of a resonant optical transition, and the formation of a free-carrier grating.