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:
Mar. 24, 2015
Filed:
Jul. 01, 2010
Masaru Kuramoto, Kanagawa, JP;
Tomoyuki Oki, Kanagawa, JP;
Tomoya Sugahara, Kanagawa, JP;
Hiroyuki Yokoyama, Miyagi, JP;
Masaru Kuramoto, Kanagawa, JP;
Tomoyuki Oki, Kanagawa, JP;
Tomoya Sugahara, Kanagawa, JP;
Hiroyuki Yokoyama, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Tohoku University, Miyagi, JP;
Abstract
An ultrashort pulse and ultrahigh power laser diode device capable of outputting pulse laser light having higher peak power with a simple composition and a simple structure is provided. The laser diode device includes: a laminated structure composed of a first compound semiconductor layer containing n-type impurity, an active layer having a quantum well structure, and a second compound semiconductor layer containing p-type impurity; a first electrode electrically connected to the first compound semiconductor layer; and a second electrode electrically connected to the second compound semiconductor layer, wherein the second compound semiconductor layer is provided with an electron barrier layer having a thickness of 1.5*10m or more, and driving is made by a pulse current having a value 10 or more times as large as a threshold current value.