1
Randall V Tarr, Paul G Steffes: Non-invasive blood glucose measurement system and method using stimulated Raman spectroscopy. Georgia Tech Research Corporation, Deveau Colton & Marquis, September 14, 1993: US05243983 (291 worldwide citation)

Stimulated Raman spectroscopy is used to non-invasively measure the concentration of an Raman active molecule, preferably D-glucose in the ocular aqueous humor of living being. The apparatus and method make use of two monochromatic laser beams, a pump laser beam and a probe laser beam. The output po ...


2
Robert R Alfano, Wubao Wang: Method and system for examining biological materials using low power CW excitation raman spectroscopy. The Research Foundation of CUNY, Kriegsman & Kriegsman, November 21, 2000: US06151522 (185 worldwide citation)

A method and system for examining biological materials using low-power cw excitation Raman spectroscopy. In accordance with the teachings of the invention, a low-power continuous wave (cw) pump laser beam and a low-power cw Stokes (or anti-Stokes) probe laser beam simultaneously illuminate a biologi ...


3
Robert E Benner, Joseph D Andrade, Richard A Van Wagenen, Dwayne R Westenskow: Molecular gas analysis by Raman scattering in intracavity laser configuration. University of Utah, Thorpe North & Western, March 10, 1987: US04648714 (163 worldwide citation)

The concentration of multiple polyatomic gases are determined almost simultaneously by Raman scattering. The gas sample is placed in a sampling cell located in the resonance cavity of a laser and a polarized laser beam having sufficient intensity to produce detectable signals of Raman scattered ligh ...


4
Richard A Van Wagenen, Jeffrey D Geisler, Donald E Gregonis, Dennis L Coleman: Multi-channel molecular gas analysis by laser-activated Raman light scattering. Albion Instruments, Knobbe Martens Olson & Bear, November 15, 1988: US04784486 (159 worldwide citation)

The concentration of multiple polyatomic gases are determined simultaneously by Raman light scattering. The gas sample is placed in a sampling cell and a polarized laser beam is passed through the cell, along a longitudinal axis. A portion of the light scattered by the gas sample is captured and det ...


5
Michel Delhaye, Yves J M Moschetto, Paul Dhamelincourt: Apparatus for the non-destructive examination of heterogeneous samples. Institut National de la Sante et de la Recherche Medicale, Robert B Frailey, June 21, 1977: US04030827 (159 worldwide citation)

The present invention relates to an apparatus for the non-destructive examination of an heterogeneous sample by analysis of the Raman radiations scattered by the sample receiving an incident of monochromatic radiation of known frequency. The apparatus includes a source of monochromatic light, such a ...


6
Patrick Treado: Chemical imaging system. ChemIcon, Buchanan Ingersoll P C, December 14, 1999: US06002476 (125 worldwide citation)

A Raman chemical imaging system uses a laser illumination source for illuminating an area of a sample. The spectrum of scattered light from the illuminated area of the sample is collected and a collimated beam is produced therefrom. An Evans Split-Element type liquid crystal tunable filter (LCTF) se ...


7
Edgar N Lewis, Ira W Levin, Patrick J Treado: Spectroscopic imaging device employing imaging quality spectral filters. The United States of America represented by the Department of Health and Human Services, Leydig Voit & Mayer, December 27, 1994: US05377003 (123 worldwide citation)

Techniques for providing spectroscopic imaging integrates an acousto-optic tunable filter (AOTF), or a step-scan interferometer, and a focal plane array detector. In operation, wavelength selectivity is provided by the AOTF or the step-scan interferometer. A focal plane array detector is used as the ...


8
Ronald E Stafford: SLM spectrometer. Texas Instruments Incorporated, Charles A Brill, James C Kesterson, Richard L Donaldson, April 2, 1996: US05504575 (120 worldwide citation)

A SLM spectrometer is provided that employs an entrance slit or a collimator to provide parallel rays of radiation to a prism which disperses the incident radiation into an associated wavelength spectrum. The resulting spectrum from the prism is incident upon a spatial light modulator (SLM), such as ...


9
Kenji Tochigi, Yoshiaki Hanyu, Yutaka Hiratsuka: Laser Raman microprobe. Hitachi, Antonelli Terry & Wands, May 6, 1986: US04586819 (120 worldwide citation)

A laser Raman microprobe separates a laser beam reflected by a sample and a Raman scattered light generated by the sample by a filter which transmits or reflects a light in a predetermined wavelength region including a wavelength region of the reflected laser beam and applies only the Raman scattere ...


10
Steven Adler Golden, Neil Goldstein, Fritz Bien: Gas species monitor system. Spectral Sciences, Joseph S Iandiorio, September 4, 1990: US04953976 (119 worldwide citation)

A gas species monitor system includes a sample volume for receiving a gas to be monitored; an external, independent laser source; means for directing the laser radiation to the volume; a multipass optical cell, responsive to the means for directing, for multiplying the laser radiation intensity in t ...