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:
Jun. 24, 2025
Filed:
Apr. 17, 2020
Horiba France Sas, Palaiseau, FR;
Romain Feilleux, Palaiseau, FR;
Amine Boussadi, Palaiseau, FR;
HORIBA FRANCE SAS, Palaiseau, FR;
Abstract
Disclosed is a reflective diffraction grating including at least one intermediate metal layer arranged between the external reflective layer and a surface of the substrate including the grating lines, the external reflective layer being consisted of a first metal and the intermediate metal layer being consisted of another metal, the other metal having a higher electron-phonon coupling coefficient than the electron-phonon coupling coefficient of the first metal or metal alloy, the external reflective layer having a thickness in a range having a lower limit determined by a reflection coefficient of the first metal and an upper limit determined by a thermal diffusion length of the first metal, and the intermediate metal layer having another thickness greater than a minimum value in such a way as to increase the high peak power ultrashort pulse light flux resistance of the reflective diffraction grating.