Continuous wave generation of coherent vibrational...

Details Continuous wave generation of coherent vibrational... Continuous wave generation of coherent vibrational...

G - Physics

01

J

73/55

G01J 3/44 (2006.01) G01N 21/00 (2006.01)

Patent

CA 1058417

INVENTION: CONTINUOUS WAVE GENERATION OF COHERENT VIBRATIONAL ANTI-STOKES SPECTRA INVENTORS: JOSEPH J. BARRETT RICHARD F. BEGLEY ABSTRACT OF THE DISCLOSURE A method and apparatus for spectroscopic material analysis are provided. Two coherent, continuous beams of mono- chromatic radiation are directed through a sample of material. A tuning mechanism adjusts the frequency difference between the radiation beams to equal substantially the vibrational frequency of a preselected constituent of the material. Radiation scattered by the material is received by a filtering mechanism adapted to transmit selectively an anti-Stokes signal generated coherently during scattering. The signal is received by a detecting mechanism which indicates the intensity thereof.

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