Enhanced Backscattering from Rough Surfaces.
Periodic rept. no. 1,
IMPERIAL COLL OF SCIENCE AND TECHNOLOGY LONDON (UNITED KINGDOM)
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Further photoresist surfaces have been prepared, but are not yet fully characterized by Talysurf and optical microscopy. Results of infra-red 10.6 microns scattering for I sub ss, I sub sp, I sub pp and I sub ps from one of these surfaces are given overleaf. This is the first really conclusive piece of evidence that we are getting significantly different behaviour for s and p incident polarizations. Curves are given for angles of incidence of 0 and 30 deg. Note the tendency of the cross-polarized return to maximize towards backscatter and the quite different shapes of the I sub ss and I sub pp curves at 30 deg angle of incidence. Although the rms surface height approx 1 micron is very much less than one wavelength, the Rayleigh parameter R 4 pi sigma sub hlambda is not small in the perturbation sense.