Patent ID: 8525114
Filing Date: 2013-09-03
Classification: G01J,G01N

Abstract:
1. A method of detecting explosives comprising the steps of: directing at least one laser onto a single spot of a target; emitting a single near infrared absorption wavelength from said at least one laser towards said single spot of said target, wherein said single near infrared absorption wavelength consists of a single near infrared wavelength capable of absorption by a chemical group selected from a group consisting of a nitro group and a carbonyl group on said single spot of said target; emitting a single reference wavelength from said at least one laser towards said single spot of said target, wherein said single reference wavelength consists of a single wavelength that is different from said single near infrared absorption wavelength; colliding said single near infrared absorption wavelength and said single reference wavelength with said target at said single spot of said target; generating a reflected wavelength from both said single near infrared absorption wavelength and said single reference wavelength after said collision of said single near infrared absorption wavelength and said single reference wavelength with said target at said single spot of said target; detecting an intensity of each of said reflected wavelengths; analyzing said intensity of each of said reflected wavelengths; and determining if said target has an explosive compound when said target has molecules of a chemical group selected from a group consisting of a nitro group and a carbonyl group based on said step of analyzing said intensity of each of said reflected wavelengths.