The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2014
Filed:
Mar. 19, 2012
Richard E. Stewart, San Ramon, CA (US);
Stephen P. Vernon, Pleasanton, CA (US);
Paul T. Steel, Livermore, CA (US);
Mark E. Lowry, Castro Valley, CA (US);
Richard E. Stewart, San Ramon, CA (US);
Stephen P. Vernon, Pleasanton, CA (US);
Paul T. Steel, Livermore, CA (US);
Mark E. Lowry, Castro Valley, CA (US);
Lawrence Livermore National Security, LLC, Livermore, CA (US);
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.