Patent ID: 8873041

Claim:
A Raman spectroscopy system comprising: an illumination system configured to direct multiple beams of light onto a same spot on a sample, each beam of light characterized by a spectral linewidth centered on a different frequency, the illumination system including a diode laser configured to produce a first beam of light, of the multiple beams of light, the first beam of light characterized by a first spectral linewidth centered on a first frequency of either about 785 nm or about 830 nm, and a neodymium-doped yttrium aluminum garnet laser configured to produce a second beam of light, of the multiple beams of light, the second beam of light characterized by a second spectral linewidth centered on a second frequency of about 1064 nm, a first lens system configured to focus the first beam of light to the spot on the sample, the first lens system being configured to direct the first beam of light along a first optical path defined between the first lens system and the spot, and a second lens system configured to focus the second beam of light to the spot on the sample, the second lens system being configured to direct the second beam of light along a second optical path defined between the second lens system and the spot, the first and second optical paths being different; and a detection system configured to receive scattered light from the sample and produce multiple Raman spectra, one spectrum for each beam of light incident on the sample, the detection system including a first optical detector and a second optical detector, where the first optical detector comprises a silicon-based detector and the second optical detector comprises an indium-gallium-arsenide detector.