Energy exchange between optical waves due to self-diffraction by photorefractive gratings in a CdTe crystal

Photorefractive Properties of CdTe:Sn

“…We believe the two-photon absorption, which should be isotropic in the crystal of cubic symmetry, is the reason of the detected depletion. The contribution of the two-photon absorption has been observed earlier in GaAs and CdTe crystals in the experiments with pulsed radiation [16,17].…”

Optical multistability from four-wave mixing in a resonant medium

“…[3,4]). Works [5,6] are devoted to theoretical and experimental studies of OB and hysteresis at six-wave mixing in a CdS crystal on fifth-order nonlinearity. OB at FWM was considered in photorefractive crystals [ 7 ] as well as in a two-level resonant medium as a purely phase modulation approximation [8].…”