Holographic-recording improvement in a bismuth silicon oxide crystal by the moving-grating technique

Z. Q. Wang, W. Allan Gillespie, Colin M. Cartwright

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Abstract

We investigate the enhancement of the diffraction efficiency of dynamic gratings recorded in a bismuth silicon oxide crystal at large modulation by the moving-grating technique. The optimum fringe velocity for maximum diffraction efficiency and the degree of enhancement of the diffraction efficiency at optimum fringe velocity are experimentally found to be dependent on the fringe modulation. We apply this technique to real-time incoherent correlation using bismuth silicon oxide. There are two main advantages in using moving gratings: First, the signal-to-noise ratio can be improved considerably because of the improved diffraction efficiency. Second, the resonant effect reduces the effect of environmental disturbances on the peak-correlation intensity, which is significant when the threshold detection level of the correlator is set.
Original languageEnglish
Pages (from-to)7627-7633
Number of pages7
JournalApplied Optics
Volume33
Issue number32
DOIs
StatePublished - 10 Nov 1994

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gratings
diffraction
bismuth oxides
silicon oxides
modulation
augmentation
crystals
correlators
signal to noise ratios
disturbances
recording
thresholds

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Wang, Z. Q.; Gillespie, W. Allan; Cartwright, Colin M. / Holographic-recording improvement in a bismuth silicon oxide crystal by the moving-grating technique.

In: Applied Optics, Vol. 33, No. 32, 10.11.1994, p. 7627-7633.

Research output: Contribution to journalArticle

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Holographic-recording improvement in a bismuth silicon oxide crystal by the moving-grating technique. / Wang, Z. Q.; Gillespie, W. Allan; Cartwright, Colin M.

In: Applied Optics, Vol. 33, No. 32, 10.11.1994, p. 7627-7633.

Research output: Contribution to journalArticle

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Wang ZQ, Gillespie WA, Cartwright CM. Holographic-recording improvement in a bismuth silicon oxide crystal by the moving-grating technique. Applied Optics. 1994 Nov 10;33(32):7627-7633. Available from, DOI: 10.1364/AO.33.007627