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. 06, 1990
Filed:
Oct. 11, 1988
Pochi A Yeh, Thousand Oaks, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
An intensity inverter includes an optically nonlinear medium and a reference beam having a uniform transverse intensity distribution and having the same wavelength as the signal beam. The reference beam is directed into the nonlinear medium. A readout beam having the same wavelength as the signal beam and counterpropagating with respect to the reference beam is also directed into the nonlinear medium. When the signal beam is directed into the nonlinear medium, the signal beam and the reference beam interact to form a hologram within the nonlinear medium, thereby diffracting a portion of the readout beam, the undiffracted portion of the readout beam having imposed on it an inversion of the signal.