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:
Aug. 11, 2009
Filed:
Aug. 15, 2007
Junji Yumoto, Atsugi, JP;
Osamu Tadanaga, Zama, JP;
Masaki Asobe, Isehara, JP;
Hiroyuki Suzuki, Tokyo, JP;
Kaoru Yoshino, Atsugi, JP;
Hiroshi Miyazawa, Isehara, JP;
Yoshiki Nishida, Mito, JP;
Hirohisa Kanbara, Isehara, JP;
Tsutomu Yanagawa, Isehara, JP;
Eishi Kubota, Isehara, JP;
Hiroyasu Mawatari, Isehara, JP;
Junji Yumoto, Atsugi, JP;
Osamu Tadanaga, Zama, JP;
Masaki Asobe, Isehara, JP;
Hiroyuki Suzuki, Tokyo, JP;
Kaoru Yoshino, Atsugi, JP;
Hiroshi Miyazawa, Isehara, JP;
Yoshiki Nishida, Mito, JP;
Hirohisa Kanbara, Isehara, JP;
Tsutomu Yanagawa, Isehara, JP;
Eishi Kubota, Isehara, JP;
Hiroyasu Mawatari, Isehara, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A laser light source is disclosed consisting of first and second lasers that respectively generate laser beams of wavelengths λand λ. Wavelength λis in the range of 0.9-1.0 μm. A nonlinear optical crystal uses the laser beams of wavelengths λand λas inputs, and outputs a coherent beam having a wavelength λof a difference frequency that satisfies a relationship of 1/λ−1/λ=1/λ. The nonlinear optical crystal has a periodically poled structure of a single period. The wavelength λof the difference frequency varies between 3.1 μm and 2.0 μm when the wavelength λvaries between 1.3 μm and 1.8 μm.