Effect of the reading beam polarization an the diffraction efficiency of photorefractive volume grating in Ce : KNSBN

摘要

The diffraction efficiency of volume grating written by two-wave mixing in Ce:KNSBN photorefractive crystal as a function of the writing beam ratio for different polarized reading beam is studied. Due to the energy transfer, the diffraction efficiency strongly depends on the polarization and the incident direction of the reading beam. The modified coupled-wave theory fitting results are coincident with the experimental data quite well. [References: 14]