Room-temperature quantum noise limited spectrometry and methods of the same

Title: Room-temperature quantum noise limited spectrometry and methods of the same

In one embodiment, a heterodyne detection system for detecting light includes a first input aperture configured to receive first light from a scene input, a second input aperture configured to receive second light from a local oscillator input, a broadband local oscillator configured to provide the second light to the second input aperture, a dispersive element configured to disperse the first light and the second light, and a final condensing lens coupled to an infrared detector. The final condensing lens is configured to concentrate incident light from a primary condensing lens onto the infrared detector, and the infrared detector is a square-law detector capable of sensing the frequency difference between the first light and the second light. More systems and methods for detecting light are described according to other embodiments.

Inventors:: Stevens, Charles G.; Tringe, Joseph W.; Cunningham, Christopher T.

Issue Date:: 2016-08-02

OSTI Identifier:: 1280871

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA) LLNL

Patent Number(s):: 9,404,801

Application Number:: 14/331,193

Contract Number:: AC52-07NA27344

Resource Relation:: Patent File Date: 2014 Jul 14

Research Org:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

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Works referenced in this record:

Non-equilibrium modes of operation for infrared detectors
journal, September 1986

Ashley, T.; Elliott, C. T.; Harker, A. T.
Infrared Physics, Vol. 26, Issue 5, p. 303-315
DOI: 10.1016/0020-0891(86)90008-4

Monolithically integrated near-infrared and mid-infrared detector array for spectral imaging
journal, April 2007

Bandara, S. V.; Gunapala, S. D.; Ting, D. Z.
Infrared Physics & Technology, Vol. 50, Issue 2-3, p. 211-216
DOI: 10.1016/j.infrared.2006.10.030

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