We present a two-beam coupling configuration in photorefractive BaTiO_3 that provides a
low-noise amplification of the signal to be detected. A two-wave mixing gain of 100 is …

We describe a pulse readout technique for high gain and a high signal-to-noise ratio (SNR)
in signal beam amplification by two-beam coupling in a photorefractive BaTiO_3 crystal. The …

Photorefractive light amplification by forward four-wave mixing in BaTiO3 - ScienceDirect Skip
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We demonstrate a new method of light amplification based on forward four-wave mixing in
photorefractive BaTiO_ 3. A single pump beam of combined (ordinary and extraordinary) …

We present and experimentally demonstrate a new method for enhancing the signal-to-
background ratio of two-wave mixing in photorefractive crystals. The method uses a mutually …

In this article we demonstrate viable photorefractive image amplification in BaTiO3 at
extremely low light levels. Uniform image amplification was observed over a range of …

Based on the feature that a signal grating has faster formation rate than noise gratings, we
have demonstrated that in the presence of a beam with a frequency different from that of the …

We present theoretical and experimental analyses of the signal-to-noise ratio (SNR) of
photorefractive two-wave mixing detection that uses BaTiO_3. The influence of beam …

A scheme is described for removal of beam fanning, which is noise in the amplified image,
by two-beam coupling in a photorefractive BaTiO 3 crystal. The large time constant of the …

Coherent image amplification by two-wave coupling in a crystal of photorefractive BaTiO3 is
analyzed. This amplifier is optimized with respect to such operational characteristics as gain …