Showing papers on "Phase conjugation published in 1976"

Theory of nonresonant multistable optical devices

Abstract: We show that a Fabry‐Perot interferometer filled with a Kerr medium has a multiple‐valued transmission‐intensity characteristic. ’’On’’ and ’’off’’ field for bistable operation are estimated, and a simple but accurate approximate theory is described.

Nonlinear dynamic theory for photorefractive phase hologram formation

Abstract: A nonlinear dynamic theory is developed for the formation of photorefractive volume phase holograms. A feedback mechanism existing between the photogenerated field and free-electron density, treated explicitly, yields the growth and saturation of the space-charge field in a time scale characterized by the coupling strength between them. The expression for the field reduces in the short-time limit to previous theories and approaches in the long-time limit the internal or photovoltaic field. Additionally, the phase of the space charge field is shown to be time-dependent.

Study of the equivalent electron drift field characteristics in LiNbO3 by phase holography

Abstract: An analysis of the diffraction efficiency of photorefractive holograms in ferroelectric crystals is shown to provide a novel technique for determining the nature and magnitude of the equivalent electron drift field. For a Fe‐doped lithium niobate crystal (0.05% per mole) we find that the total field consists of an intensity‐independent internal field of 8.5 kV/cm and a photogenerated field given by the conversion factor 1.4 ×106 V cm/W.