Multi-element optical detectors with sub-wavelength gaps

Details Multi-element optical detectors with sub-wavelength gaps Multi-element optical detectors with sub-wavelength gaps

2008-05-09

2009-12-29

Sohn, Seung C (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S336200, C250S338100, C313S1030CM, C313S1030CM

Reexamination Certificate

active

07638751

ABSTRACT:
A multi-element optical detector includes a plurality of optical detector elements capable of producing an output signal having information about the state of an incident electromagnetic radiation as a function of time. An active region includes a photosensitive region of one of the optical detector elements separated in part or in whole from the photosensitive region of at least one other optical detector element by a distance less than the wavelength of the electromagnetic radiation that the optical detector elements are being used to detect.

REFERENCES:
patent: 6812464 (2004-11-01), Sobolewski et al.
patent: 7049593 (2006-05-01), Sobolewski et al.
patent: 2002/0158188 (2002-10-01), Jordan
Smirnov et al., “Ultrathin NbN film superconducting single-photon detector array” Journal of Physics: Conference Series 61, 2007, pp. 1081-1085, Apr. 1, 2007.
Dauler et al., “1.25-Gbit/s photon-counting optical communications using a two-element superconducting nanowire single photon detector” Advanced Photon Counting Techniques, Proc. of SPIE, vol. 6372, pp. 637212-1-637212-8, Oct. 25, 2006.
Rosfjord et al., “Nanowire Single-photon detector with an integrated optical cavity and anti-reflection coating” Optics Express, vol. 14, No. 2, pp. 527-534, Jan. 23, 2006.
Kerman et al., “Constriction-limited detection efficiency of superconducting nanowire single-photon detectors” Applied Physics Letters, 90, 2007 American Institute of Physics, pp. 101110-1-101110-3, Mar. 5, 2007.

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