Multi-wavelength Raman light detection for detecting a species

US8279437B2 · kind B2 · utility

Assignee

• HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

• Min Hu · Singapore, SG
• Alexandre M. Bratkovski · Mountain View, US
• Huel Pei Kuo · Cupertino, US
• Jingjing Li · Palo Alto, US
• Zhiyong Li · Foster City, US
• Fung Suong Ou · Palo Alto, US
• Michael Josef Stuke · Palo Alto, US
• Michael Renne Ty Tan · Menlo Park, US
• Shih-Yuan Wang · Palo Alto, US
• Wei Wu · Palo Alto, US

Key dates

• Filing date: Jul 14, 2010
• Grant date: Oct 2, 2012
• Expiry date: Apr 7, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/651
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for detecting at least one species using Raman light detection includes at least one laser source for illuminating a sample containing the at least one species. The apparatus also includes a modulating element for modulating a spatial relationship between the sample and the light beams to cause relative positions of the sample and the light beams to be oscillated, in which Raman light at differing intensity levels are configured to be emitted from the at least one species based upon the different wavelengths of the light beams illuminating the sample. The apparatus also includes a Raman light detector and a post-signal processing unit configured to detect the at least one species.