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. 17, 2009
Filed:
Apr. 30, 2008
Ichiro Fukushi, Sagamihara, JP;
Koji Tojo, Sagamihara, JP;
Kazuma Watanabe, Hadano, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
A compact apparatus is provided for stably converting a wavelength of a laser diode with the use of an optical fiber and a wavelength selective device. Employing a bulk type element as a wavelength selective device makes the action of controlling the temperature of the device easy, and can stabilize the wavelength emitted from the laser diode. The optical fiber () is placed between the output side of a laser diode () and a wavelength selective device () of bulk type. While the optical fiber () is arranged compact in the form of a coil, the length of an extra-cavity defined by the wavelength selective device () is sufficiently longer than the coherence length. Accordingly, the action of stably converting the wavelength can be carried out by the compact apparatus.