Inventors:
Min Hu - Sunnyvale CA, US
Alexandre M. Bratkovski - Mountain View CA, US
Huel Pei Kuo - Cupertino CA, US
Jingjing Li - Palo Alto CA, US
Zhiyong Li - Redwood City CA, US
Fung Suong Ou - Palo Alto CA, US
Michael Josef Stuke - Palo Alto CA, US
Michael Renne Ty Tan - Menlo Park CA, US
Shih-Yuan Wang - Palo Alto CA, US
Wei Wu - Palo Alto CA, US
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
G01J 3/44
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.