Holographic recording with orthogonally polarized beams in a cesium-doped (K 0.5 Na 0.5 ) 0.2 (Sr 0.75 Ba 0.25 ) 0.9 Nb 2 O 6 crystal
2001
Holographic recording with orthogonally polarized beams in a
cesium-doped KNSBN
[(K0.5Na0.5)0.2(Sr0.75Ba0.25)0.9Nb2O6]
crystal has been studied. It was found that this kind of
photorefractive crystal possesses high linear dichroism, which makes it
suitable for use in polarization holography. The diffraction
efficiency as a function of the polarization orientation of the
reference beam and as a function of the fringe modulation at the
optimum polarization orientation of the reference beam is
experimentally investigated. Theoretical fitting based on Kahmann
models was performed and agrees well with the experimental data. In
the experiments, both polarization holography and conventional
holography are used to record a binary object. The reconstruction
shows that polarization holography with Ce:KNSBN is highly effective,
exhibiting high diffraction efficiency and reduced fanning
noise.
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