Reflectance difference spectroscopy
|This article relies largely or entirely upon a single source. (June 2010)|
Reflectance difference spectroscopy is a spectroscopic technique which measures the difference in reflectance of two beams of light that are shone in normal incident on a surface with different linear polarizations. It is also known as reflectance anisotropy spectroscopy (RAS).
It is calculated as:
and are reflectance in two different polarizations.
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