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:
Nov. 02, 2004
Filed:
Mar. 29, 2001
Gigaphoton Inc., Tokyo, JP;
Abstract
A wavelength control device for a laser device capable of controlling a center wavelength of a laser light to be a predetermined target wavelength is provided. For this purpose, the wavelength control device for the laser device includes a movable holder ( ) for making an optical component ( ) movable with respect to a laser optical axis ( ), and a laser controller ( ) for moving the optical component with respect to the laser optical axis and changing an incident angle (&phgr;) of a laser light ( ) on a band narrowing optical component ( ) to thereby control a center wavelength of the laser light to be a predetermined target wavelength, and the movable holder comprises a piezoelectric element unit ( ) moving by a very short distance and a pulse motor unit ( ) moving by a longer distance than the piezoelectric element unit.