SCANNER FOR SPATIALLY OFFSET RAMAN SPECTROSCOPY

摘要

Apparatus for carrying out spatially offset Raman spectroscopy (SORS) is described. The apparatus comprises a rotatable prism arranged such that a spatial offset between an entry region and a collection region at a sample is dependent upon an angle of rotation of the prism.

主权项

1. Apparatus for carrying out spatially offset Raman spectroscopy on a sample, comprising:
a light source arranged to form a beam of probe light directed along an optical path to an entry region on the sample; collection optics arranged to receive said probe light from a collection region on the sample following subsurface scattering of said probe light within the sample; a spectral analyser arranged to detect Raman scattering spectral features in the probe light received through the collection optics; and a rotatable prism disposed in the optical path, the rotatable prism being arranged such that a spatial offset between the entry region and the collection region is dependent upon the angle of rotation of the prism.