Photorefractive parameters of lithium niobate crystals from photoinduced light scattering

Photoinduced light scattering (PILS) in nominally undoped LiNbO3 with the mixed photovoltaic and diffusion charge transports is studied theoretically and experimentally. All parameters describing the holographic behavior of LiNbO3 are received from the angular distribution of the scattering intensity: gain factor Gamma, diffusion field E-D, photovoltaic field E-pv, and frequency detuning Omega tau(di). The technical advantage of this PILS method is the low requirement of mechanical stability.