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Effect of Anomalous Dispersion on Visual Photoreceptors

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Abstract

A theoretical model of light absorption in a visual photoreceptor is developed using electromagnetic theory and the absorption properties of visual photopigments. We show that the small decrease of refractive index in the region of anomalous dispersion alters the internal-reflection properties of the photoreceptors and hence its absorption spectrum. As little as 0.1% decrease of refractive index is shown to produce a noticeable bump in the absorption spectrum of the photoreceptor at a higher frequency than peak absorption.

© 1972 Optical Society of America

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