Burr, Geoffrey W. and Psaltis, Demetri (1996) Effect of the oxidation state of LiNbO3:Fe on the diffraction efficiency of multiple holograms. Optics Letters, 21 (12). pp. 893-895. ISSN 0146-9592 http://resolver.caltech.edu/CaltechAUTHORS:BURol96
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We show that the oxidation state of Fe in LiNbO3 has two competing effects on the diffraction efficiency of multiple holograms in 90 degree-geometry holographic storage. For crystals with moderate absorption, the saturation space-charge field is larger after high-temperature reduction treatment. However, reduction also increases absorption, which reduces the overall diffraction efficiency. We develop a theoretical model that predicts achievable diffraction efficiency as a function of oxidation state, doping level, photovoltaic field, crystal length, and region of beam overlap. We compare this model with experimental results for achievable diffraction efficiency and erasure-time constant.
|Additional Information:||© 1996 Optical Society of America Received December 8, 1995 This research is supported by Rome Labs and the National Science Foundation Center for Neuromorphic Systems Engineering. We thank Ya-yun Liu for assistance with the high-temperature annealing.|
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|Deposited On:||06 May 2006|
|Last Modified:||26 Dec 2012 08:51|
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