Remote optical measurement probe

Details Remote optical measurement probe Remote optical measurement probe

1993-10-15

1994-12-27

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With raman type light scattering

2504581, 356318, G01J 344, G01N 2165, G01N 2164

Patent

active

053770048

ABSTRACT:
A holographic probe facilitates the measurement of radiative effects such as Raman scattering or fluorescence of a remotely disposed sample. Improving upon prior-art techniques, the probe teaches a substantially in-line path between the sample and an output optic wherein a narrowband reflective element, preferably holographically recorded, is used to fold excitation energy from an illumination path into the collection path and reject any Rayleigh scattering received from the sample. The improved configuration further allows a dispersive filtering element to be placed in the illumination path, which may be used in conjunction with spatial filtering to reject non-excitation wavelengths.

REFERENCES:
patent: 5112127 (1992-05-01), Carrabba et al.
patent: 5166813 (1992-11-01), Metz
Barbillat, J.; Delhaye, M.; Dhamelincourt, P.j "Confocal Raman Mapping", pp. 1514-1515, 1992.
Dilar Raman Probe Brochure, undated.

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