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. 23, 1999
Filed:
Aug. 28, 1997
Samsung Electronics Co. , Ltd., Kyungki-Do, KR;
Abstract
A light emitting apparatus having a surface emitting laser including a substrate, a first reflection layer, an active layer and a second reflection layer stacked successively on the substrate, first and second electrodes formed respectively on the lower surface of the substrate and a portion of the upper surface of the second reflective layer, to emit light in the direction of the stacked layers, and a monitoring photodetector stacked on the second reflection layer to detect the amount of the emitted light from the surface emitting laser, is provided. The monitoring photodetector includes first semiconductor material layer, an absorbing layer and second semiconductor material layer stacked successively on the second reflection layer, a third electrode formed on the second semiconductor layer to output detecting signals of the monitoring photodetector, and a controlling layer formed on the bottom of the absorbing layer to intercept some of the incident light.