Spectroscopy system for the detection of chemicals

Details Spectroscopy system for the detection of chemicals Spectroscopy system for the detection of chemicals

2006-02-21

2006-02-21

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

C250S459100

Reexamination Certificate

active

07002681

ABSTRACT:
A method of detecting a chemical species at a stand-off distance using a spectroscopy system, the method comprising the steps of providing a modulated light source emitting a first beam of light at a first wavelength incident to the chemical species, the first beam of light causing the chemical species to emit a signal, providing a spectral shifter a second beam of light at a second wavelength, the second beam of light causing a photochemical reaction in the chemical species to shift a spectrum of the light emitted from the chemical species, providing a detector positioned to detect the signal emitted from the chemical species, and providing a data processor system in communication with at least one of the detector and the modulated light source, the data processor system processing the signal to determine the identity of the chemical species.

REFERENCES:
patent: 3768908 (1973-10-01), Zaromb
patent: 4820046 (1989-04-01), Sohma et al.
patent: 5633313 (1997-05-01), Blanchard et al.
patent: 6180415 (2001-01-01), Schultz et al.

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