Optics: measuring and testing – By light interference – Spectroscopy
Reexamination Certificate
2007-08-21
2007-08-21
Connolly, Patrick (Department: 2877)
Optics: measuring and testing
By light interference
Spectroscopy
Reexamination Certificate
active
10946691
ABSTRACT:
A mode-monitoring system used in connection with discrete beam frequency tunable laser provides optical feedback that can be used for adjusting the laser or for other processing associated with the use of the laser. For example, the output of a frequency tunable source for a frequency-shifting interferometer can be monitored to support the acquisition or processing of more accurate interference data. A first interferometer for taking desired measurements of optical path length differences traveled by different portions of a measuring beam can be linked to a second interferometer for taking measurements of the measuring beam itself. The additional interference data can be interpreted in accordance with the invention to provide measures of beam frequency and intensity.
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“Generalized Data Reduction for Heterodyne Interferometry” by J.E. Greivenkamp, Optical Engineering, 23(4), 350-352, Jul./Aug. 1984.
Dunn Thomas J.
Farmiga Nestor
Kulawiec Andrew W.
Marron Joseph
Connolly Patrick
Corning Incorporated
Schaeberle Timothy M.
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