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:
Sep. 05, 2006
Filed:
May. 21, 2001
Horie Hideyoshi, Ushiku, JP;
Satoru Nagao, Ushiku, JP;
Yoshitaka Yamamoto, Ushiku, JP;
Toshinari Fujimori, Ushiku, JP;
Horie Hideyoshi, Ushiku, JP;
Satoru Nagao, Ushiku, JP;
Yoshitaka Yamamoto, Ushiku, JP;
Toshinari Fujimori, Ushiku, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
The present invention discloses a light emitting device comprising a substrate transparent at the emission wavelength and an active layer structure formed on such substrate, in which the thickness of the substrate is 75 μm or less, and/or a layer for suppressing spectral-intensity-modulation due to the substrate-mode is provided between the substrate and the active layer structure. Such device can suppress the spectral-intensity modulation due to the substrate-mode, which is observed for the case the substrate is transparent at the emission wavelength, to thereby provide a light emission device excellent in linearity of the current-light output characteristics, and to thereby improve the coupling characteristics with an external cavity.