Abstract

An antireflection layer of Fe₂O₃ beneath the photoresist used to record a holographic diffraction grating on a planar waveguide has been shown to result in improved grating depth, and therefore in greater diffraction efficiency, by reducing the effects of standing waves in the film during exposure.

© 1980 Optical Society of America

Improved holography for chirped gratings

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Integrated grating circuit for guided-beam multiple division fabricated by electron-beam direct writing

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Heat treatment for reduction of surface roughness on holographic gratings

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Scattering from high efficiency diffraction gratings

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