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. 20, 2024
Filed:
Oct. 29, 2021
Asociación Centro DE Investigación Cooperativa En Nanociencias “cic Nanogune”, Donostia, ES;
Eva Oblak, Donostia, ES;
Patricia Riego Saavedra, Donostia, ES;
Andreas Berger, Donostia, ES;
Aitor García Manso, Donostia, ES;
Ane Martínez De Guereñu Elorza, Donostia, ES;
Fernando Arizti, Donostia, ES;
Andoni Irizar Picón, Donostia, ES;
Abstract
An apparatus to detect and measure a T-MOKE signal includes a first linear polarizer located on the optical path between a light source and a reflecting surface of a sample, a device to produce a magnetic field at the sample location, the device being configured to direct the magnetization perpendicularly to the optical plane of incidence and to reverse the direction of the magnetic field, a rotatable quarter-wave plate located after the reflecting surface on the optical path of the reflected light, a second linear polarizer that is rotatable and is located after the quarter-wave plate on the optical path of the reflected light, and a photo-detector located after the second linear polarizer on the optical path of the reflected light, the photo-detector being configured to measure the intensity of the light. A method for extracting a T-MOKE signal in an ellipsometric measurement procedure employs such an apparatus. The method includes a polarization detection scheme to ascertain that a T-MOKE signal (and not a noise signal) is indeed detected.