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. 20, 2017
Filed:
Jan. 06, 2016
Liang Luo, Ames, IA (US);
Jigang Wang, Ames, IA (US);
Thomas Koschny, Ames, IA (US);
Martin Wegener, Karlsruhe, DE;
Costas M. Soukoulis, Ames, IA (US);
Liang Luo, Ames, IA (US);
Jigang Wang, Ames, IA (US);
Thomas Koschny, Ames, IA (US);
Martin Wegener, Karlsruhe, DE;
Costas M. Soukoulis, Ames, IA (US);
Iowa State University Research Foundation, Inc., Ames, IA (US);
Other;
Abstract
Provided are systems and methods to generate single-cycle THz pulses from a few tens of nanometers thin layer of split ring resonators (SRRs) via optical rectification of femtosecond laser pulses. The emitted THz radiation, with a spectrum ranging from about 0.1 to 4 THz, arises exclusively from pumping the magnetic-dipole resonance of SRRs around 200 THz. This resonant enhancement, together with pump polarization dependence and power scaling of the THz emission, underpins the nonlinearity from optically induced circulating currents in SRRs, with a huge effective nonlinear susceptibility of 0.8×10m/V that far exceeds surface nonlinearities of both thin films and bulk organic/inorganic crystals and sheet nonlinearities of non-centrosymmetric materials such as ZnTe.