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. 26, 2008
Filed:
Aug. 01, 2006
Ki-sung Kim, Hwaseong-si, KR;
Taek Kim, Seongnam-si, KR;
Heon-su Jeon, Gunpo-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Abstract
Provided is a vertical external cavity surface emitting laser (VECSEL) including: a bottom DBR mirror formed on a substrate; an RPG layer formed on the bottom DBR layer; a capping layer formed on the RPG mirror; an optical pump irradiating a pump beam onto a surface of the capping layer; and an external cavity mirror installed on an external surface of a stacked layer corresponding to the bottom DBR mirror. The RPG layer includes: a plurality of first barrier layers periodically formed on nodes of a standing wave and formed of a material having a larger energy band gap width than that of the pump beam; and a plurality of gain layers including a plurality of QW layers formed of InGaAs and disposed between the first barrier layers, and a plurality of second barrier layers disposed on upper and lower portions of the QW layers.