Optics: measuring and testing – By light interference – Spectroscopy
Reexamination Certificate
2011-01-25
2011-01-25
Lyons, Michael A (Department: 2877)
Optics: measuring and testing
By light interference
Spectroscopy
Reexamination Certificate
active
07876446
ABSTRACT:
An interferometric confocal method and assembly for terabyte volume optical data memories couples two-beam spectral interferometry to chromatic confocal technology and permits a longitudinal splitting of foci in the memory volume, with the foci having limited diffraction. A spectrometer is located downstream of the interferometer with confocal discrimination in the beam path. A diffractive optical zone lens (DOZE) with a usage of the first diffraction order is introduced into the interferometric beam path to achieve longitudinal chromatic splitting. The interferometer can be a fiber-coupled interferometer with a retroreflector in the fiber-coupled reference arm and with wavelength-dependent optical path difference modification by dispersion or diffraction. The optical path difference in the interferometer is set so that easily detectable wavelets are formed from detectable interferograms by spectral analysis.
REFERENCES:
patent: 5192980 (1993-03-01), Dixon et al.
patent: 5526338 (1996-06-01), Hasman et al.
patent: 5565986 (1996-10-01), Knuttel
patent: 5619371 (1997-04-01), Pontius
patent: 5784352 (1998-07-01), Swanson et al.
patent: 5883875 (1999-03-01), Coufal et al.
patent: 6072765 (2000-06-01), Rolland et al.
patent: 6480285 (2002-11-01), Hill
patent: 6819491 (2004-11-01), Takahashi et al.
patent: 7054062 (2006-05-01), Engelhardt et al.
patent: 2006/0109483 (2006-05-01), Marx et al.
patent: 44 11 017 (1994-09-01), None
patent: 0 731 459 (1996-09-01), None
“Interface microscopy for three-dimensional imaging with wavelength-to-depth encoding”—Guoqiang Li et al., Optics Letters—Oct. 15, 2000, vol. 25, No. 20, pp. 1505-1507.
“Chromatic confocal microscopy by means of continuum light generated through a standard single-mode fibre”—J. Garzon et al., Journal of Optics A: Pure and Applied Optics, 2004, pp. 544-548.
Berger Reinhard
Droste Ulrich
Kohler Christian
Körner Klaus
Osten Wolfgang
Hespos Gerald E.
Lyons Michael A
Porco Michael J.
Universitat Stuttgart
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