Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 5, 2006
Patent Application Number
11227432
Date Filed
September 16, 2005
Patent Primary Examiner
Patent abstract
A fluorescence subtracted Raman spectroscopy apparatus uses a wavelength modulated tunable filter as the spectrometer. The wavelength modulation results in an amplitude modulation on the detected optical signal. By using a frequency selective detection technique, the Raman signal is amplified and extracted from the fluorescence background.
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