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:
Dec. 29, 2015
Filed:
Jan. 04, 2013
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Daivid Fowler, Saint Martin le Vinoux, FR;
Roch Espiau de Lamaestre, Grenoble, FR;
Abstract
The invention relates to a photodetector for infrared light radiation having a given wavelength (λ), including a stack of layers consisting of: a continuous layer () of a partially absorbent semiconductor material, which constitutes the photodetection area; a spacer layer () of a material that is transparent to said wavelength and has an index ne; and a structured metal mirror (), the distance (g) between the top of said mirror and the semiconductor layer being less than (λ)/ne and the mirror surface having a profile corresponding to the periodic repetition, according to period (P), of a basic pattern defined by the alternating series of raised surfaces () and slots () having the widths (L, L) and (L, L), respectively, the widths (L) to (L) being such that none are equal to zero, and that the sum thereof is equal to P and at least L≠Lor L≠L.