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:
Oct. 18, 2022
Filed:
Oct. 31, 2019
Pécsi Tudományegyetem, Pécs, HU;
János Hebling, Pécs, HU;
Gábor Almási, Kozármisleny, HU;
László Pálfalvi, Pécs, HU;
György Tóth, Pécs, HU;
PÉCSI TUDOMÁNYEGYETEM, Pécs, HU;
Abstract
A technique to generate terahertz radiation is disclosed, where a pump beam () is coupled into an optical element () made of a medium with non-linear optical properties having plane-parallel front and rear boundary surfaces (), wherein the pump beam () is split into a set of partial pump beams () by reflection and/or diffraction on a periodic relief structure () of said optical element (). The partial pump beams travel along a direction at an angle γ that satisfies the velocity matching condition of vcos(γ)=vwithin the given medium, where vis the group velocity of the pump beam, vis the phase velocity of the terahertz radiation and the speed a planar envelope () travels toward the front boundary surface () of the optical element (), and angle γ is the angle formed by the pulse front envelope and the phase front of the pump beam.