A method of enhancing the degenerate four-wave mixing (DFWM) conjugate reflectivity in
photorefractive BSO is described, which uses an auxiliary beam of different wavelength to …

We present the results of a theoretical and experimental investigation of the photorefractive
effect under a revolving external electric field in BSO and BTO crystals. We show that the …

Theoretical considerations and experimental results are presented for simultaneous
degenerate multi-wave mixing in photorefractive BSO. Using the same crystal volume and …

This paper dealt with the experimental observation of enhanced four-wave mixing in BSO.
The method used involves sinusoidal phase shift in one of the pump beams. Due to this …

Expressions of the coupling constant for contradirectional two-wave mixing (CTWM) have
been derived. The calculations show that the energy transfer in CTWM has some unique …

Expressions of the coupling constant for contradirectional two-wave mixing (CTWM) have
been derived. The calculations show that the energy transfer in CTWM has some unique …

The large optical nonlinearities of many photorefractive crystais, which can be induced by
moderate light intensities, were the prosperous ground for intensive and diverse activities. I …

Efficient enhancement of the two-wave mixing gain in photorefractive Bi 12 SiO 20 by
applying ac-sinusoidal electric fields at 11 kHz is reported. At a wavelength of 514.5 nm, the …

In general, the application of an electric field to a photorefractive material with optical activity
results in a change in the effective electro-optic coefficient, r eff, which, in turn, alters the …

Nonlinear refraction, nonlinear absorption and optical limiting in photorefractive crystals Bi
12 SiO 20 (BSO) and Bi 12 GeO 20 (BGO) at the wavelengths of 1064 and 532 nm were …