Patent ID: 9068883
Filing Date: 2015-06-30
Classification: G01J,G01N,G02B,H01S

Abstract:
1. Apparatus for performing Raman spectroscopy, the apparatus comprising: an ensemble of individually addressable laser emitters, the ensemble being adapted to emit first laser light having a first wavelength and second laser light having a second wavelength, wherein a separation between the first and second wavelengths corresponds to a width of a Raman band of a substance of interest; a Bragg grating element that is adapted to receive the first laser light and the second laser light, the Bragg grating element comprising a three-dimensional bulk of optical material having recorded therein a first Bragg grating having a first period and a second Bragg grating having a second period; and an optical system that is adapted to form a combined beam that contains light at each of the first and second wavelengths.