Optics: measuring and testing – By light interference – Spectroscopy
Reexamination Certificate
2007-11-06
2007-11-06
Lee, Hwa (Andrew) (Department: 2886)
Optics: measuring and testing
By light interference
Spectroscopy
Reexamination Certificate
active
10900403
ABSTRACT:
Novel spectroscopy techniques using entangled photons are disclosed. In one technique, entangled photons are directed to a sample of interest, while the photons with which they are entangled are resolved according to frequency. The photons transmitted by or reflected from the sample and the frequency-resolved photons are detected. Such detection may be by way of an electronic coincidence counter or a biphoton sensitive material, which absorbs entangled photons while allowing other photon pairs to pass. Detection information is used to derive spectroscopic properties of the sample. In another technique, a Fourier transform spectroscopy technique using entangled photons is disclosed. Entangled photons are directed to a sample, while the photons with which they are entangled are directed to a Michelson interferometer. The photons transmitted by or reflected from the sample and the photons leaving the Michelson interferometer are detected. Such detection may be by way of an electronic coincidence counter or a biphoton sensitive material. Detection information is used to derive spectroscopic properties of the sample.
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Detschel Marissa J.
General Dynamics Advanced Information Systems Inc.
Hunton & Williams LLP
Leaning Jeffrey Scott
Lee Hwa (Andrew)
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