A laser-based goniometric optical scatter instrument (GOSI) is available for measuring the bidirectional reflectance distribution function (BRDF), its polarization counterpart (Mueller matrix BRDF), or other light scattering ellipsometry parameters, from a variety of samples or surfaces. Another instrument, the Scanning Optical Scatter Instrument, is being developed to yield the scattering distribution in multiple directions at once, with partial polarimetric capabilities. These facilities are housed in clean environments to maintain sample integrity. See Bidirectional Optical Scattering Facility for details. Other instruments exist within the division under Spectrophotometry.
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