Non-uniformities in Thick Dichromated Gelatin Transmission Gratings
- 1 September 1987
- journal article
- research article
- Published by Taylor & Francis in Journal of Modern Optics
- Vol. 34 (9) , 1211-1225
- https://doi.org/10.1080/09500348714551101
Abstract
The angular characteristics of transmission gratings are studied for the case when three parameters, namely the dielectric-constant modulation, the average dielectric constant and the grating vector vary with distance in the grating. The diffraction efficiency is worked out with the aid of a coupled-wave theory for linear and quadratic variation of the parameters. Gratings recorded in thick (≈ 60 µm) dichromated gelatin plates are measured. The spatial variations of the parameters are deduced by comparing the experimental and theoretical results.Keywords
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