Narrow lateral waveguide laser

US6845116B2 · kind B2 · utility

Assignees

• Wisconsin Alumni Research Foundation · US
• The Board of Trustees of the University of Illinois · US

Inventors

• Luke J. Mawst · Sun Prairie, US
• Nelson Tansu · Bethlehem, US
• Michael P. Nesnidal · Shakopee, US
• Steven Meassick · Sharon, US
• Eric Stiers · Kewaunee, US
• Darren Hansen · Auburn, US
• Troy J. Goodnough · Madison, US

Key dates

• Filing date: Oct 24, 2002
• Grant date: Jan 18, 2005
• Expiry date: Jan 26, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S2301/18
• WIPO field: Optics
• WIPO sector: Instruments

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.