Beam-coupling experiments are carried out with two BaTiO_3 crystals as a function of the
intensity and wavelength. We demonstrate in these experiments that hole–electron …

Two optical beams can couple in a photorefractive crystal without using the electro-optic
effect. Beam coupling is due to a spatially modulated absorption caused by the …

It is shown experimentally that the nonsymmetric behavior of the beam-coupling gain
coefficient of BaTiO_3 crystals with respect to the sense of the c axis is caused by an …

We report measurements of response time for the intensity-dependent absorption in a single
BaTiO_3 crystal under conditions in which no photorefractive effect can be observed. The …

We present two-beam coupling experiments in the nanosecond regime at 1.06?? µm, using
photorefractive BaTiO_3: Rh.? The maximum observed exponential gain coefficient is 14.2 …

The gain–length product for two-wave mixing in photorefractive BaTiO_3 is calculated as a
function of the angles between a pump beam and a scattered beam and the crystal c axis …

We demonstrate, for the first time to our knowledge, two-beam coupling in BaTiO_3 using
white light. An achromatic grating arrangement in conjunction with a high-pressure mercury …

Photorefractive two-beam coupling and energy transfer in BaTiO3 are studied at multiple
wavelengths using He-Cd, He-Ne, and diode lasers. The photorefractive signal beam gain is …

Hole–electron competition in photorefractive gratings clickable element to expand a topic
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The beam coupling and response time of reduced BaTiO3 are reported. The major carrier
changes from hole to electron after reduction. The electro‐optic gain and effective trap …