Patent ID: 8279437

Claim:
An apparatus for detecting at least one species using multi-wavelength Raman light detection, said apparatus comprising: at least one laser source for illuminating a sample containing the at least one species with a plurality of light beams having different wavelengths, said plurality of light beams being at least partially distinct with respect to each other; a modulating element for modulating a spatial relationship between the sample and the plurality of light beams to cause relative positions of the sample and the plurality of light beams to be oscillated, wherein Raman light at differing intensity levels are configured to be emitted from the at least one species based upon the different wavelengths of the light beams illuminating the sample; at least one detector for detecting intensity levels of the Raman light emitted from the at least one species as the at least one species is illuminated by the light beams; and a post-signal processing unit configured to process the detected Raman light emission intensities to detect the at least one species.