This is the first characterization of both positive and negative charge carriers as well as deep
traps in any crystal sufficient to predict photorefractive behavior for all beam geometries on …

We present the results of a comparative experimental study of optical and photorefractive
properties at room temperature of four nominally undoped, single‐crystal, commercially …

We have measured the temperature dependence of the electron mobility in a single crystal
of photorefractive n-type cubic Bi_12SiO_20 by using a holographic time-of-flight technique …

Dark decay of photorefractive gratings and persistent photocurrents in Bi12SiO20 are
interpreted using a model of the photorefractive effect which includes shallow traps as well …

We report the measurement of diffusion transport length LD, quantum efficiency φ for
photoelectron generation, and the Debye screening length and associated trap density NA …

We find that the temporal shape and speed of dark decays of photorefractive gratings
depend on the light intensity used to write the grating. We attribute this to the fact that the …

The dynamic behavior of the complementary space-charge gratings formed in a
Bi_12SiO_20 crystal through prolonged recording at 780 nm is used to determine a number …

The time development of a photorefractive grating created by intersecting 30 ps (532 nrn)
beams in a well-characterized Bi12Si020 crystal (in a static field around 1 kV/em) …

We employ an optical technique requiring no electrodes to measure three parameters
characterizing photorefractive traps in nominally undoped n-type bismuth silicate at 515-and …

Photon‐induced local departures from charge neutrality are the origin of the photorefractive
effect. When a periodic photorefractive grating is stored in the material, one can associate …