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:
Jul. 26, 1994
Filed:
Nov. 30, 1993
Keiichi Haraguchi, Kokubunji, JP;
Kenji Hiruma, Tokorozawa, JP;
Kensuke Ogawa, Hachioji, JP;
Toshio Katsuyama, Ome, JP;
Ken Yamaguchi, Fuchu, JP;
Toshiyuki Usagawa, Yono, JP;
Masamits Yazawa, Yokohama, JP;
Toshiaki Masuhara, Hinode, JP;
Gerard P Morgan, Co. Gaiway, GB;
Hiroshi Kakibayashi, Nagareyama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A semiconductor light-emitting device includes a plurality of semiconductor rods, each of which has a pn junction. The semiconductor rods are formed on a semiconductor substrate such that the plurality of semiconductor rods are arranged at a distance substantially equal to an integer multiple of the wavelength of light emitted from the semiconductor rod. With such devices, various novel optical devices such as a micro-cavity laser of which the threshold current is extremely small and a coherent light-emitting device having no threshold value can be realized.