Radiant energy – Luminophor irradiation
Patent
1990-11-13
1993-10-12
Fields, Carolyn E.
Radiant energy
Luminophor irradiation
2504591, 356318, G01N 2164
Patent
active
052528340
ABSTRACT:
A short pulse of laser excitation and a synchronized gating time control of a fluorescence spectrograph detector are combined with a microscope, precise focusing and delivery optics, multi-mode illumination means, cooling, and temperature controls to form a new microspectrophotometry system. The gating control can block detection of any unwanted excitation radiation, such as nearly instantaneous (within 10.sup.-12 seconds) emissions after the sample is pulse excited and delayed emissions (after 10.sup.-7 seconds) after the sample is pulse excited. The gating also allows delayed emissions to be separately isolated. The microscopic focusing, pulse excitation and time segregation of detected emissions achieves a new level of precision in the detected structural spectra and property measurements not generally achievable for composite samples by prior art methods and devices.
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Fields Carolyn E.
Jacobson William O.
Union Oil Company of California
Wirzbicki Gregory F.
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