Tunable nearhyphen;infrared radiation by difference frequency mixing in beta barium borate crystal

摘要

Noncollinear difference frequency mixing is reported for the first time in a barium borate crystal that generates nearhyphen;infrared radiation tunable from 2.04 to 3.42 mgr;m. The technique apart from verifying a very simple relation correlating the phasehyphen;matching angle with the noncollinear angle of the interacting beams provides a simple alternative scheme for generating coherent radiation in this important spectral range.