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:
Oct. 19, 2004
Filed:
May. 02, 2001
Applicant:
Inventor:
Takehiro Shiomoto, Kashihara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/04 ;
U.S. Cl.
CPC ...
H01S 3/04 ;
Abstract
A semiconductor laser device has a stem having a mounting surface, a first semiconductor laser element directly or indirectly mounted onto the mounting surface of the stem, the first semiconductor laser element having an emission wavelength and a temperature dependence, and a second semiconductor laser element disposed on top of the first semiconductor laser element, the second semiconductor laser element having an emission wavelength different from the emission wavelength of the first semiconductor laser element and a temperature dependence lower than the temperature dependence of the first semiconductor laser element.