Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1993-09-10
1996-12-31
Turner, Samuel A.
Optics: measuring and testing
By particle light scattering
With photocell detection
356359, G01B 902
Patent
active
055899366
ABSTRACT:
The present invention relates to an optical measuring apparatus for measuring physicochemical properties of specimen, utilizing the optical echo which is a nonlinear optical phenomenon. Light emitted from a laser beam source in the optical measuring apparatus of the present invention is split into two beams, one of which is optically delayed by an optical delay unit and the other of which is phase-modulated at a predetermined frequency by a phase modulator. An optical mixer mixes the two beams outgoing from the optical delay unit and from the phase modulator, and the mixed beam is guided onto a specimen to form a light spot thereon. Light from the specimen is detected by a photodetector, and a modulation component even times larger than the modulation frequency of phase modulator is extracted from the output signal from the photodetector. The physicochemical properties of specimen can be measured by detecting an intensity of optical echo depending upon the optical delay time set by the optical delay unit.
REFERENCES:
patent: 5133601 (1992-07-01), Cohen et al.
Optics Letters, vol. 16, No. 1, Jan. 1991, pp. 10-12, "Phase Modulation Technique For Accumulated Photon Echo' Whole Document" by Saikan et al.
Optics Letters, vol. 16, No. 1, Jan. 1991, pp. 13-14, "Fluorescence Detection Of Femtosecond Accumulated Photon Echo' Whole Document" by Uchikawa et al.
Physical Review B, vol. 45, No. 22, Jun. 1, 1992, pp. 12752-12759, "Stimulated Photon Echo Spectroscopy" by Yano et al.
Journal of the Optical Society of America B, vol. B9, No. 6, Jun. 1992, pp. 941-945, "Ultrafast Dephasing of Resorufin, etc.", by Gruzdev et al.
Journal of the Optical Society of America B, vol. B9, No. 6, Jun. 1992, pp. 987-991, "Spectral Hole Burning,etc.", by Bernet et al.
Applied Spectroscopy, vol. 45, No. 6, Jul. 1991, pp. 1041-1045, "Three Dimensional Space and Time Resolved Fluorescence Spectroscopy", by Sasaki et al.
Optics Letters, vol. 16, No. 21, Nov. 1991, pp. 1683-1685, "Femtosecond Time Resolved Interferometry" by Minoshima et al.
Furusawa Akira
Suga Takayuki
Uchikawa Kiyoshi
Nikon Corporation
Turner Samuel A.
LandOfFree
Optical measuring apparatus for measuring physichemical properti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical measuring apparatus for measuring physichemical properti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical measuring apparatus for measuring physichemical properti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1145552