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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}
}

Works referenced in this record:

Coherent detection of freely propagating terahertz radiation by electro‐optic sampling
journal, January 1996


Free‐space radiation from electro‐optic crystals
journal, February 1990


Broadband detection capability of ZnTe electro‐optic field detectors
journal, May 1996


Interferometric characterization of 160 fs far‐infrared light pulses
journal, August 1991


Ultrafast electro‐optic field sensors
journal, March 1996


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


Chemistry is right for T-ray imaging
journal, March 1996


Detection of High Power THz Pulses by Phase Retardation in an Electro-Optic Crystal
book, January 1996


Imaging with terahertz waves
journal, January 1995