Fiber-optic spectroscopic probe with reduced background luminesc

Details Fiber-optic spectroscopic probe with reduced background luminesc Fiber-optic spectroscopic probe with reduced background luminesc

1997-08-26

2000-03-14

Sanghavi, Hemang

Optical waveguides

Miscellaneous

385 12, 356301, 356318, G02B 600, G01J 344

Patent

active

060383631

ABSTRACT:
A fiber-optic spectroscopic probe minimizes unwanted sources of luminescence through the use of one or more non-luminescing beam-redirecting elements operative to aperture share the optical collection path. Preferably, the beam-redirecting element is reflective, and may take the form of a spot mirror on an otherwise optically transparent window to fold at least a portion of the excitation radiation into the optical collection path or a mirror having a centralized aperture may be used to introduce the excitation radiation into the optical collection path. In either case, the excitation radiation may first pass through a dispersive element in a bandpass filter configuration. Several complete fiber-optic-based probe head designs are disclosed along with results indicating reduced luminescence, spurious fluorescence, in particular.

REFERENCES:
patent: 5112127 (1992-05-01), Carrabba et al.
patent: 5377004 (1994-12-01), Owen et al.
patent: 5424825 (1995-06-01), Delhaye et al.
patent: 5615673 (1997-04-01), Berger et al.
patent: 5710626 (1998-01-01), O'Rourke et al.

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