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

Abstract

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:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1280871
Patent Number(s):
9,404,801
Application Number:
14/331,193
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
DOE Contract Number:
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Jul 14
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Stevens, Charles G., Tringe, Joseph W., and Cunningham, Christopher T. Room-temperature quantum noise limited spectrometry and methods of the same. United States: N. p., 2016. Web.
Stevens, Charles G., Tringe, Joseph W., & Cunningham, Christopher T. Room-temperature quantum noise limited spectrometry and methods of the same. United States.
Stevens, Charles G., Tringe, Joseph W., and Cunningham, Christopher T. 2016. "Room-temperature quantum noise limited spectrometry and methods of the same". United States. doi:. https://www.osti.gov/servlets/purl/1280871.
@article{osti_1280871,
title = {Room-temperature quantum noise limited spectrometry and methods of the same},
author = {Stevens, Charles G. and Tringe, Joseph W. and Cunningham, Christopher T.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 8
}

Patent:

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  • In one embodiment, a heterodyne detection system for detecting light includes a first input aperture adapted for receiving first light from a scene input, a second input aperture adapted for receiving second light from a local oscillator input, a broadband local oscillator adapted for providing the second light to the second input aperture, a dispersive element adapted for dispersing the first light and the second light, and a final condensing lens coupled to an infrared detector. The final condensing lens is adapted for concentrating incident light from a primary condensing lens onto the infrared detector, and the infrared detector ismore » 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.« less
  • In one embodiment, a heterodyne detection system for detecting light includes a first input aperture adapted for receiving a first light from a scene input, a second input aperture adapted for receiving a second light from a local oscillator input, a broadband local oscillator adapted for providing the second light to the second input aperture, a dispersive element adapted for dispersing the first light and the second light, and a final condensing lens coupled to an infrared detector. The final condensing lens is adapted for concentrating incident light from a primary condensing lens onto the detector, and the detector ismore » 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 disclosed according to more embodiments.« less
  • A lead-acid battery construction is disclosed which includes gridless reactively limited positive and negative electrode means combined with separator material and an electrolyte. Reactive limitation of the negative electrode means may be realized by providing the negative electrode means with inner portions comprising non-reactive (i.e., solid) lead and outer portions of reactive (i.e., porous) lead. Reactive limitation of the positive electrode means may be provided by the said negative electrode means. The positive electrode means comprises PbO/sub 2/ which occurs in outer reacting portions and inner non-reacting portions. The battery having such reactively limited electrode means may only be dischargedmore » to the extent that the inner reactive lead portions of the negative electrode means become completely transformed into PbSO/sub 4/, whereupon all electrochemical reaction in the battery will cease. That portion of the PbO/sub 2/ of the positive electrode means which has not been transformed into PbSO/sub 4/ may be defined as the non-reacting portion. The electrode means as described above are further characterized by the non-reactive lead portions of the negative electrode means and the non-reacting portions of the positive electrode means being of sufficient mass to carry all required electrical current, both during charging and discharging of the battery. Thereby it becomes possible to provide a battery having gridless electrode means.« less
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