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Title: Ultrafast transient grating radiation to optical image converter

Abstract

A high sensitivity transient grating ultrafast radiation to optical image converter is based on a fixed transmission grating adjacent to a semiconductor substrate. X-rays or optical radiation passing through the fixed transmission grating is thereby modulated and produces a small periodic variation of refractive index or transient grating in the semiconductor through carrier induced refractive index shifts. An optical or infrared probe beam tuned just below the semiconductor band gap is reflected off a high reflectivity mirror on the semiconductor so that it double passes therethrough and interacts with the radiation induced phase grating therein. A small portion of the optical beam is diffracted out of the probe beam by the radiation induced transient grating to become the converted signal that is imaged onto a detector.

Inventors:
; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1163194
Patent Number(s):
8,879,137
Application Number:
13/423,498
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Mar 19
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Stewart, Richard E, Vernon, Stephen P, Steel, Paul T, and Lowry, Mark E. Ultrafast transient grating radiation to optical image converter. United States: N. p., 2014. Web.
Stewart, Richard E, Vernon, Stephen P, Steel, Paul T, & Lowry, Mark E. Ultrafast transient grating radiation to optical image converter. United States.
Stewart, Richard E, Vernon, Stephen P, Steel, Paul T, and Lowry, Mark E. Tue . "Ultrafast transient grating radiation to optical image converter". United States. https://www.osti.gov/servlets/purl/1163194.
@article{osti_1163194,
title = {Ultrafast transient grating radiation to optical image converter},
author = {Stewart, Richard E and Vernon, Stephen P and Steel, Paul T and Lowry, Mark E},
abstractNote = {A high sensitivity transient grating ultrafast radiation to optical image converter is based on a fixed transmission grating adjacent to a semiconductor substrate. X-rays or optical radiation passing through the fixed transmission grating is thereby modulated and produces a small periodic variation of refractive index or transient grating in the semiconductor through carrier induced refractive index shifts. An optical or infrared probe beam tuned just below the semiconductor band gap is reflected off a high reflectivity mirror on the semiconductor so that it double passes therethrough and interacts with the radiation induced phase grating therein. A small portion of the optical beam is diffracted out of the probe beam by the radiation induced transient grating to become the converted signal that is imaged onto a detector.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {11}
}

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