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17 January 1989 Two-Wave Mixing Photorefractive Diffraction Efficiency
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In this paper, a new figure of merit for steady-state diffraction efficiency for two-wave mixing in photorefractive materials is presented which includes total incident energy and absorption losses. The parameter is appropriate for use in systems where the reading and writing beams are the same and where efficient use of a fixed light budget is a design requirement. Design relationships between the exponential gain, I', the beam ratio, m , energy coupling, absorption, and Fresnel reflectance and transmittance are explored. Experimental results using BaTiO3 at X = 514.5 nm bear out analysis. The results provide a straightforward guide to the optical designer who wishes to use the coupling capabilities of photorefractive media in an optical system or subsystem.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. C. Gilbreath and F M Davidson "Two-Wave Mixing Photorefractive Diffraction Efficiency", Proc. SPIE 0968, Ceramics and Inorganic Crystals for Optics, Electro-Optics, and Nonlinear Conversion, (17 January 1989);

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