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:
Sep. 25, 2018
Filed:
Sep. 06, 2017
Hamamatsu Photonics K.k., Hamamatsu-shi, Shizuoka, JP;
Hisanari Takahashi, Hamamatsu, JP;
Yoichi Kawada, Hamamatsu, JP;
Takashi Inoue, Hamamatsu, JP;
Koyo Watanabe, Hamamatsu, JP;
Koji Takahashi, Hamamatsu, JP;
Hironori Takahashi, Hamamatsu, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A wavelength conversion element includes a crystal having a periodically poled structure in which polarization is inverted with an inversion period Λ along a z-axis which is an input axis of a light pulse. The wavelength conversion element is configured to generate an output the inversion period Λ(x) at each position x by change of the inversion period Λ according to the position x, and when a target frequency linearly changing with the position x is set to f(x)=b+ax, a frequency width of the output frequency is set to δf(x), and the output frequency is set to f(x)=f(x)+α(x), the output frequency is set to coincide with the target frequency within a range satisfying a condition |α(x)|≤δf(x).