1 June 2002 Quantitative measurement for the modulation of photorefractive index gratings
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Abstract
The modulation of a photorefractive index grating, ?n, can be estimated by counting the number of peaks in the curve for the diffraction efficiency as a function of time under the phase matching condition. The accuracy for this method is about 13%. Here a new method is proposed, in which we improve the measurement accuracy to about 1%, by adding the measurement for the diffraction efficiency as a function of the angle mismatch. This precise ?n measurement allows us to quantify photorefractive effects with greater accuracy.
© (2002) Society of Photo-Optical Instrumentation Engineers (SPIE)
Shoang C. Donn, Shoang C. Donn, Chung-Chen Tu, Chung-Chen Tu, Ching-Cherng Sun, Ching-Cherng Sun, Ming-Tsung Chen, Ming-Tsung Chen, } "Quantitative measurement for the modulation of photorefractive index gratings," Optical Engineering 41(6), (1 June 2002). https://doi.org/10.1117/1.1476941 . Submission:
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