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

Theoretical and experimental investigations were made of a photorefractive nonlinearity of CdTe semiconductor crystals. Photorefractive gratings were formed in undoped CdTe and used to provide efficient energy exchange between nanosecond pulsed light beams (λ ≈ 1.06 μm) characterized by an exchange gain of ~ 0.13 cm ^– 1.