Frequency shifters for photorefractive crystals.

  title={Frequency shifters for photorefractive crystals.},
  author={J. P. Huignard and J P Herriau},
  journal={Applied optics},
  volume={24 24},
In wave mixing experiments with photorefractive crystals such as Bi12 (Si; Ge; Ti) O20 the efficiency of the interaction is greatly improved when recording with a moving grating: nearly degenerate two-wave or four-wave mixing with an externally applied field. The resolution of Kukhtarev's equations with a moving grating has shown a resonance effect which… CONTINUE READING