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:
Feb. 24, 1998
Filed:
Apr. 12, 1996
Young-Se Kwon, Taejon, KR;
Jeong-Keun Ji, Seoul, KR;
Korea Advanced Institute of Science and Technology, Taejon, KR;
Abstract
The present invention relates to a laser diode for optoelectronic integrated circuit, more specifically, to a laser diode for optoelectronic integrated circuit with a rooftop reflector which can be operated by means of a low driving current and a process for preparing the same. A laser diode for optoelectronic integrated circuit of the present invention comprises: a substrate; a waveguide consisting of a N-cladding layer and a passive waveguide layer, which is positioned on the substrate; an active waveguide with a rooftop reflector, which is positioned on the waveguide and has an epitaxial layer of a separating layer, an active layer, a P-cladding layer and a p-ohmic layer; SiO.sub.2 layer with a linear contact opening which is positioned on the active waveguide; an upper metal contact layer which is positioned on the SiO.sub.2 layer; and, a lower metal contact layer which is positioned under the substrate. The laser diode for optoelectronic integrated circuit of the present invention has a high efficiency of utilization of light and a low threshold current, to make the laser diode operational by means of a low driving current.