Patent ID: 9664621
Date: 2017-05-30
CPC Classifications: G01J,G01N

Claim:
1. A polarization selective surface enhanced Raman spectroscopy (SERS) system comprising: a SERS sensing substrate comprising at least three nanofingers arranged as a SERS multimer to exhibit a plurality of polarization-dependent plasmonic modes; a stimulus source to illuminate the SERS multimer with a stimulus signal having a polarization state to preferentially stimulate a selected one of the plurality of polarization-dependent plasmonic modes of the SERS multimer; and a Raman detector to detect a Raman scattering signal emitted by an analyte in a vicinity of the SERS multimer, the Raman scattering signal having a polarization state associated with the selected one of the plurality of polarization-dependent plasmonic modes, the Raman detector to discriminate between the polarization state of the Raman scattering signal and a different polarization state of a background noise signal.