Accession Number : ADD012190

Title :   Method and Apparatus for Detecting Singlet State Resonance Fluorescence.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Barrett,Terence W

Report Date : 26 Nov 1985

Pagination or Media Count : 10

Abstract : This patent discloses a method and apparatus for detecting the wavelength of singlet state resonance fluorescence of a sample, wherein the sample is illuminated sequentially with various incident wavelengths. For each wavelength, linearly polarized and circularly polarized components are allowed to pass sequentially by a first polarizer to the sample. The sample emits light as a result of spontaneous molecular energy transitions. Four components of the emitted light are allowed to sequentially pass to a detector by a second polarizer. The intensities of these components are then detected, and these values can be employed to obtain a new ratio for each wavelength at which this ratio equals one is selected as the wavelength of resonance fluorescence. In one example, a computer is provided to control the illumination of the sample and the two polarizers, and also may be utilized to computer the above ratios.

Descriptors :   *PATENTS, *OPTICAL DETECTORS, *FLUORESCENCE, EMISSION SPECTRA, RESONANCE, ILLUMINATION, POLARIZERS, COMPUTER APPLICATIONS, LINEAR POLARIZATION

Subject Categories : Optical Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE