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Title: Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation

Abstract

Apparatus and methods for characterizing free-space electromagnetic energy, and in particular, apparatus/method suitable for real-time two-dimensional far-infrared imaging applications are presented. The sensing technique is based on a non-linear coupling between a low-frequency electric field and a laser beam in an electro-optic crystal. In addition to a practical counter-propagating sensing technique, a co-linear approach is described which provides longer radiated field--optical beam interaction length, thereby making imaging applications practical.

Inventors:
; ;
Issue Date:
Research Org.:
Rensselaer Polytechnic Institute, Troy, NY (US)
Sponsoring Org.:
USDOE Office of Environmental Management (EM) (US)
OSTI Identifier:
833452
Patent Number(s):
5952818
Application Number:
R&D Project: EMSP 65004; 08/739,099; TRN: US200430%%1489
Assignee:
DOEEMSP
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 14 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 54 ENVIRONMENTAL SCIENCES; ELECTRIC FIELDS; ELECTROMAGNETIC RADIATION; LASERS

Citation Formats

Zhang, Xi-Cheng, Libelo, Louis Francis, and Wu, Qi. Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation. United States: N. p., 1999. Web.
Zhang, Xi-Cheng, Libelo, Louis Francis, & Wu, Qi. Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation. United States.
Zhang, Xi-Cheng, Libelo, Louis Francis, and Wu, Qi. Tue . "Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation". United States. https://www.osti.gov/servlets/purl/833452.
@article{osti_833452,
title = {Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation},
author = {Zhang, Xi-Cheng and Libelo, Louis Francis and Wu, Qi},
abstractNote = {Apparatus and methods for characterizing free-space electromagnetic energy, and in particular, apparatus/method suitable for real-time two-dimensional far-infrared imaging applications are presented. The sensing technique is based on a non-linear coupling between a low-frequency electric field and a laser beam in an electro-optic crystal. In addition to a practical counter-propagating sensing technique, a co-linear approach is described which provides longer radiated field--optical beam interaction length, thereby making imaging applications practical.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}

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Works referenced in this record:

Free‐space electro‐optic sampling of terahertz beams
journal, December 1995