Optics: measuring and testing – For light transmission or absorption – Of fluent material
Reexamination Certificate
2007-06-12
2007-06-12
Stafira, Michael P. (Department: 2877)
Optics: measuring and testing
For light transmission or absorption
Of fluent material
Reexamination Certificate
active
10700161
ABSTRACT:
One system of the present invention includes a modulated light source subsystem to provide a first light signal with a first modulation index, and a second light signal with a second modulation index. The system also includes a region to receive an analyte for evaluation and direct the first light signal thereto, and a detector responsive to the second light signal and a third light signal from the region to provide an output representative of spectroscopic information. The third light signal further includes noise induced by residual amplitude modulation that is reduced at the detector by the second light signal in accordance with a difference between the first modulation index and the second modulation index.
REFERENCES:
patent: 4034285 (1977-07-01), Ashley et al.
patent: 4305666 (1981-12-01), Becherer et al.
patent: 4398293 (1983-08-01), Hall et al.
patent: 4523847 (1985-06-01), Bjorklund et al.
patent: 4590597 (1986-05-01), Long-sheng et al.
patent: 4594511 (1986-06-01), Cooper et al.
patent: 4856009 (1989-08-01), Hall et al.
patent: 4856899 (1989-08-01), Iwaoka et al.
patent: 4905244 (1990-02-01), Wyeth et al.
patent: 5070260 (1991-12-01), Wong
patent: 5267019 (1993-11-01), Whittaker et al.
patent: 5285308 (1994-02-01), Jenkins et al.
patent: 5293213 (1994-03-01), Klein et al.
patent: 5317156 (1994-05-01), Cooper et al.
patent: 5339177 (1994-08-01), Jenkins et al.
patent: 5347392 (1994-09-01), Chen et al.
patent: 5441054 (1995-08-01), Tsuchiya
patent: 5477368 (1995-12-01), Eskildsen et al.
patent: 5502562 (1996-03-01), Werle
patent: 5566381 (1996-10-01), Korotky
patent: 5636035 (1997-06-01), Whittaker et al.
patent: 5644123 (1997-07-01), Hait
patent: 5771255 (1998-06-01), Horiuchi et al.
patent: 6094267 (2000-07-01), Levenson et al.
patent: 6356350 (2002-03-01), Silver et al.
patent: 6400449 (2002-06-01), Maris et al.
patent: 6483582 (2002-11-01), Modlin et al.
patent: 2002/0093716 (2002-07-01), Hiraizumi
patent: 0 373 945 (1994-02-01), None
patent: 0 720 313 (1999-06-01), None
Stabilization and Frequency Measurement of the I2-Stabilized Nd: YAG Laser, Hall, Ma, Taubman, Tiemann, Hong, Pfister and Ye, IEEE Transactions on Instrumentation and Measurement, vol. 48, pp. 583-586 (Apr. 1999).
Frequency locking to a high-finesse Fabry-Perot cavity of a frequency doubles Nd: YAG laser used as the optical phase modulator, Bregant, Cantatore, Valle, Ruoso, Zavattini (Feb. 28, 2002).
Analysis of Cleaved Coupled-Cavity(C3)Diode Lasers-Part II: Frequency Modulation, Above Threshold Operation, and Residual Amplitude Modulation*, Streifer, Yevick, Paoli and Burnham, IEEE Journal of Quantum Electronics vol. QE-21, pp. 539-550 (Jun. 1985).
Low-amplitude-noise laser for AURIGA detector optical readout, Conti, DeRose, Marin, Applied Optics, vol. 39, pp. 5732-5738 (Nov. 2000).
Progress Report on the Laser Absorption Spectrometer Development, Spiers, Menzies, Philips, Ransom, no date.
Optical interference fringe reduction in frequency-modulation spectroscopy experiments, Hjelme, Neegard, Vartdal, Optical Society of America, pp. 1731-1733 (Mar. 17, 1995).
Modulation transfer processes in optical heterodyne saturation spectroscopy, Shirley, Optical Society of America, pp. 537-539 (Jul. 9, 1982).
Opitcal Heterodyne Spectroscopy Enhanced by an External Optical Cavity: Toward Improved Working Standards, IEEE Journal of Quantum Electronics, vol. 26, pp. 2006-2012 (Nov. 1990).
Residual amplitude modulation in laser electro-optical phase modulation, Whittaker, Gehrtz, Bjorklund, J. Opt. Soc. Am. B, vol. 2, pp. 1320-1326 (Aug. 1985).
Battelle (Memorial Institute)
Klarquist & Sparkman, LLP
Stafira Michael P.
LandOfFree
Reduction of residual amplitude modulation in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reduction of residual amplitude modulation in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduction of residual amplitude modulation in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3822523