Rough surface scattering using a source able to produce an incident beam with controlled polarization and coherence
Por:
Bruce, Neil C., Rodriguez-Herrera, Oscar G., Ramirez, Claudio N., Rosete-Aguilar, Martha
Publicada:
10 feb 2021
Resumen:
We present a comparison of the first numerical and experimental results
for the scattering of light from rough surfaces using a recently
developed variable coherence polarimetry source that permits obtaining
information on the object without having to scan over incidence or
scatter angle. We present, for the first time, we believe, the
application of this source to a 1D rough surface and show how to analyze
the scattered field to retrieve useful information about the surface.
This source uses a liquid-crystal phase modulator to control the
polarization as well as the coherence of the beam illuminating the rough
surface. Changing the polarization state distribution at the source
plane, by controlling the phase distribution on a spatial light
modulator, gives a scan of two source spots over the rough surface. The
scattered beam is analyzed with a Stokes polarimeter. The Kirchhoff
approximation is used to calculate the scattered Stokes vector using the
experimental incident Stokes vector and intensity distribution as a
source. Good agreement is obtained between the numerical and
experimental results, for a simple calculation of the number of
intensity maxima obtained as the two first-order source spots are
scanned across the sample. (C) 2021 Optical Society of America
Filiaciones:
Bruce, Neil C.:
Univ Nacl Autonoma Mexico, Inst Ciencias Aplicadas & Tecnol, Ciudad De Mexico 04510, Mexico
Rodriguez-Herrera, Oscar G.:
Univ Nacl Autonoma Mexico, Inst Ciencias Aplicadas & Tecnol, Ciudad De Mexico 04510, Mexico
Ramirez, Claudio N.:
Univ Nacl Autonoma Mexico, Inst Ciencias Aplicadas & Tecnol, Ciudad De Mexico 04510, Mexico
Rosete-Aguilar, Martha:
Univ Nacl Autonoma Mexico, Inst Ciencias Aplicadas & Tecnol, Ciudad De Mexico 04510, Mexico
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