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:
Jan. 18, 2005
Filed:
Oct. 24, 2002
Luke J. Mawst, Sun Prairie, WI (US);
Nelson Tansu, Madison, WI (US);
Michael P. Nesnidal, Oregon, WI (US);
Steven Meassick, Mt. Horeb, WI (US);
Eric W. Stiers, LaCrosse, WI (US);
Darren M. Hansen, Madison, WI (US);
Troy J. Goodnough, Madison, WI (US);
Luke J. Mawst, Sun Prairie, WI (US);
Nelson Tansu, Madison, WI (US);
Michael P. Nesnidal, Oregon, WI (US);
Steven Meassick, Mt. Horeb, WI (US);
Eric W. Stiers, LaCrosse, WI (US);
Darren M. Hansen, Madison, WI (US);
Troy J. Goodnough, Madison, WI (US);
Wisconsin Alumni Research Foundation, Madison, WI (US);
The Board of Trustees of the University of Illinois, Urbana, IL (US);
Abstract
As edge-emitting semiconductor laser incorporating a narrow waveguide design is disclosed. The narrow waveguide expands the lateral mode size, creates a large modal spot size, and insures higher-order modes are beyond cutoff. Separate current confinement allows the current injection region to match the mode size. The resulting device exhibits single-mode operation with a large spot-size to high output powers.