Continuous wave generation of coherent vibrational anti-stokes s

Details Continuous wave generation of coherent vibrational anti-stokes s Continuous wave generation of coherent vibrational anti-stokes s

1976-12-22

1978-03-07

Evans, F. L.

Optics: measuring and testing

Oil testing

356106S, G01J 344

Patent

active

040777197

ABSTRACT:
A method and apparatus for spectroscopic material analysis are provided. Two coherent, continuous beams of monochromatic 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.

REFERENCES:
patent: 3563656 (1971-02-01), Helms
patent: 3913033 (1975-10-01), Tuccio et al.
Wynne, IBM Technical Disclosure Bulletin, vol. 15, No. 5, Oct. 1972, pp. 1469 and 1470.
Moore et al., Analytical Chemistry, vol. 45, No. 12, Oct. 1973, pp. 2009-2014.

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