Submillimeter Wavelength Scattering from Random Rough Surfaces

Published: August 09, 2017


Erich N. Grossman, Richard A. Chamberlin, David R. Novotny, Joshua A. Gordon, Nina P. Basta


We describe bistatic scattering measurements on eight reference targets constructed from Al2O3 grit of various sizes embedded in an absorptive epoxy matrix. These samples' surface topographies were measured using focus-variation microscopy, and their autocorrelation lengths and root-mean-square (RMS) roughness levels extracted. Bistatic scattering measurements were then performed in the principal plane over the 325-500 GHz range and at 650 GHz, using either a vector network analyzer or a narrow band source and detector respectively, in both s an p polarizations, and at incidence angles of 25o, 45o, and 65o. The samples' root-mean-square (RMS)roughness levels cover the range of 36-280 υm, corresponding to 0.39<ς/λ<0.81 . Their autocorrelation lengths cover the range of 0.10
Citation: IEEE Transactions on Terahertz Science and Technology
Volume: 7
Issue: 5
Pub Type: Journals


terahertz, millimeter-wave, submillimeter, scattering, bistatic
Created August 09, 2017, Updated November 10, 2018