Compact, hand-held raman spectrometer microsystem on a chip

US7505128B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Anis Zribi · Colorado Springs, US
• Stacey Joy Kennerly · Niskayuna, US
• Glenn Scott Claydon · Wynantskill, US
• Long Que · Rexford, US
• Ayan Banerjee · Fremont, US
• Shankar Chandrasekaran · Viralimalai, IN
• Shivappa Goravar · Bengaluru, IN
• David Cecil Hays · Niskayuna, US

Key dates

• Filing date: Apr 10, 2006
• Grant date: Mar 17, 2009
• Expiry date: Oct 6, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/0221
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An integrated spectrometer instrument, including an optical source formed on a chip, the optical source configured to generate an incident optical beam upon a sample to be measured. Collection optics formed on the chip are configured to receive a scattered optical beam from the sample, and filtering optics formed on the chip are configured to remove elastically scattered light from the scattered optical beam at a wavelength corresponding to the optical source. A tunable filter formed on the chip is configured to pass selected wavelengths of the scattered optical beam, and a photo detector device formed on the chip is configured to generate an output signal corresponding to the intensity of photons passed through the tunable filter.