Influence of beam-coupling on photorefractive parametric oscillation in a dc-field-biased Bi12SiO20 crystal
Pedersen, Henrik C.
Webb, David J.
Johansen, Per M.
arxiv: Physics::Accelerator Physics
The influence of beam coupling on photorefractive parametric oscillation generated in a Bi12SiO20 crystal is investigated experimentally by comparing two configurations with and without the presence of beam coupling. It is shown that beam coupling has a great influence; for example, the transversal split of the K/2 subharmonic grating is seen only in the beam-coupling geometry. A case that resembles K/4 subharmonic generation can, however, still be found in the absence of beam coupling.
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