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:
Feb. 02, 2021
Filed:
Apr. 08, 2017
The Penn State Research Foundation, University Park, PA (US);
Joseph L. Rose, State College, PA (US);
Akhlesh Lakhtakia, State College, PA (US);
The Penn State Research Foundation, University Park, PA;
Abstract
Methods and systems of altering optical reflection via dynamic control of an ultrasonic/acoustic guided wave field in an acousto-optical wave conductor are described. Ultrasonic/acoustic waves transmitted by an acousto-optical wave conductor are used to modify the ability of the acousto-optical wave conductor to propagate light waves via the acousto-optical wave conductor when a light beam impinges onto one surface of the acousto-optical wave conductor. A one-way optical device may be produced by using a dynamic tuning approach to modify the sound field via mode and frequency choice (and possibly beam focusing and steering as well) in order to produce special light reflection and transmission effects. Oscillations in stress (and mass density) along the acousto-optical wave conductor and possibly across the thickness of the acousto-optical wave conductor may serve as a special acousto-optic Bragg diffraction grating that alters the nonspecular reflection of light.