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. 30, 2018
Filed:
Mar. 03, 2015
Applicant:
Hitachi High-technologies Corporation, Minato-ku, Tokyo, JP;
Inventors:
Kenji Aiko, Tokyo, JP;
Kei Shimura, Tokyo, JP;
Assignee:
Hitachi High-Technologies Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/35 (2014.01); G02F 1/35 (2006.01); G02F 1/19 (2006.01); H01S 3/00 (2006.01); G01N 21/3581 (2014.01); G02F 1/355 (2006.01);
U.S. Cl.
CPC ...
G01N 21/3581 (2013.01); G02F 1/19 (2013.01); G02F 1/3551 (2013.01); H01S 3/0057 (2013.01); H01S 3/0092 (2013.01); G01N 2201/06113 (2013.01); G02F 2201/20 (2013.01); G02F 2203/13 (2013.01);
Abstract
A terahertz wave generating device according to the present invention comprises a fixed-wavelength pump optical laser that generates a single wavelength pump beam, a variable-wavelength laser that emits a seed beam and is capable of making the wavelength of the seed beam variable, a delay element that delays pulses of the pump beam and a first non-linear crystal that generates terahertz waves by receiving the seed beam, a first pump beam that is not delayed by the delay element and a second pump beam that is delayed by the delay element.