The steady-state and dynamic behavior of absorption and phase gratings in semi-insulating
GaAs and InP have been studied by four-wave mixing. These measurements permit …

The time responses of the photorefractive effect in semi-insulating InP doped with Fe and
CdTe doped with In are measured. Using microjoule infrared pulses, gratings can be written …

Making use of the photorefractive effect, we have developed a versatile method of imaging
various crystal properties of semi‐insulating compound semiconductors. The magnitude and …

We describe a new method for photorefractive response time measurement in fast
photorefractive crystals based on continuous phase modulation in two-wave mixing. We …

The photorefractive effect has been observed for the first time in semi-insulating InPe: Fe
and Ga~ sCr. Thes~ m~ terials are sensitive and versatile recording media for high bit rate …

The nonequilibrium occupation of multiple defect states in inhomogeneously illuminated
crystals is demonstrated to have dramatic and previously unexpected consequences for the …

A simple polarization technique for separate measurement of absorption and phase gratings
in photorefractive crystals, that allowed us to demonstrate experimental evidence of …

Three image processing experiments were performed by degenerate four‐wave mixing in
photorefractive GaAs. The experiments were imaging by phase conjugation, edge …

Two-wave mixing gain in photorefractive GaAs: Cr using the moving grating technique has
been measured. The results compare well to theory when a value of τ di/τ 2 measured by …

The development of a theory of four-wave mixing in photo-refractive crystals is described.
This theory is solved in the undepleted pumps approximation with linear absorption and …