Optics: measuring and testing – By light interference – Having wavefront division
Reexamination Certificate
2007-01-09
2007-01-09
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
Having wavefront division
C356S453000
Reexamination Certificate
active
10502195
ABSTRACT:
The present invention relates to a spectrally dispersive interferometric optical apparatus having a light source, generating a phase shift, measuring the intensity of the interference signals, selectively measuring the intensity of the interference signal and determining the phase angles and/or a relative phase shift of the intensity of the interference signals. In accordance with the invention, the generating of a phase shift between components of different polarization directions in at least one of the branches of the interferometer includes a diffraction grating. The selective determination of the intensity of the interference signal in dependence on the polarization moreover permits determination of the respective intensity for the TE components and for the TM components of the interference signal with respect to the coordinate system of the diffraction grating.
REFERENCES:
patent: 3614235 (1971-10-01), Munnerlyn
patent: 5038032 (1991-08-01), Nishimura et al.
patent: 5066130 (1991-11-01), Tsukiji et al.
patent: 5120132 (1992-06-01), Spies et al.
patent: 5164790 (1992-11-01), McNeil et al.
patent: 5565986 (1996-10-01), Knuttel
patent: 5880838 (1999-03-01), Marx et al.
patent: 6061136 (2000-05-01), Hayashi
patent: 6917421 (2005-07-01), Wihl et al.
patent: 6980297 (2005-12-01), Maeda
H. Giovannini and H. Akhouayri, “Interferometric configuration based on a grating interferometer for the measurement of the phase between TE and TM polarizations after diffraction by gratings”, Nov. 1, 1995; Optics Letters, vol. 20, No. 21, p. 2255.
S. Traeger, et al, “Polarization Sagnac Interferometer with a reflective Grating Beam Splitter”, Optics Letters, vol. 25, No. 10, May 15, 2000; p. 722.
Meshulach et al, “Real-time spatial-spectral interference measurements of ultrashort optical pulses”, J. Opt. Soc. Am. B. vol. 14, No. 8, Aug. 1997, p. 2095.
Anderson Denise B
CAMPus Technologies AG
Dilworth & Barrese LLP
Toatley , Jr. Gregory J.
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