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. 02, 2010
Filed:
Apr. 03, 2009
Houtong Chen, Los Alamos, NM (US);
Willie John Padilla, Newton, MA (US);
Richard Douglas Averitt, Newton, MA (US);
John F. O'hara, Los Alamos, NM (US);
Mark Lee, Albuquerque, NM (US);
Houtong Chen, Los Alamos, NM (US);
Willie John Padilla, Newton, MA (US);
Richard Douglas Averitt, Newton, MA (US);
John F. O'Hara, Los Alamos, NM (US);
Mark Lee, Albuquerque, NM (US);
Los Alamos National Security, LLC, Los Alamos, NM (US);
Abstract
Metamaterial structures are taught which provide for the modulation of terahertz frequency signals. Each element within an array of metamaterial (MM) elements comprises multiple loops and at least one gap. The MM elements may comprise resonators with conductive loops and insulated gaps, or the inverse in which insulated loops are present with conductive gaps; each providing useful transmissive control properties. The metamaterial elements are fabricated on a semiconducting substrate configured with a means of enhancing or depleting electrons from near the gaps of the MM elements. An on to off transmissivity ratio of about 0.5 is achieved with this approach. Embodiments are described in which the MM elements incorporated within a Quantum Cascade Laser (QCL) to provide surface emitting (SE) properties.