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:
Jan. 26, 2016
Filed:
Aug. 08, 2011
Ryota Sekiguchi, Kawasaki, JP;
Kousuke Kajiki, Tokyo, JP;
Ryota Sekiguchi, Kawasaki, JP;
Kousuke Kajiki, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electromagnetic wave generating device is provided which includes an optical waveguide including a plurality of waveguide segments such that the main lobe of a combined electromagnetic wave has a substantially single large directivity. The electromagnetic wave generating device includes the optical waveguide including a plurality of waveguide segments each of which is sandwiched between dielectrics and includes a nonlinear optical crystal. The waveguide segments are arranged such that an angle formed by the directions of propagation of light in the two adjacent waveguide segments substantially corresponds to 2θ. When ndenotes the refractive index of the nonlinear optical crystal for light and ∈denotes the effective relative permittivity of an assembly of the dielectrics and the waveguide segments for an electromagnetic wave, θis defined as θ=cos(n/θ√∈).