Patent · US Expired

Mushroom-shaped semiconductor stripe laser

US4692926A · kind A · utility

5Cited by

1References

19Claims

0Family size

Assignees

Licentia Patent-Verwaltungs-GmbH · DE
Ant Nachrichtentechnik GmbH · DE

Inventors

Peter Marschall · Heilbronn, DE
Ewald Schlosser · Senden, DE
Hans-Peter Vollmer

Key dates

Filing date	Apr 25, 1985
Grant date	Sep 8, 1987
Priority date	—
Expiry date	Apr 25, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/2275
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A mushroom-shaped semiconductor stripe laser, particularly with transversal, monomode light distribution and a double heterostructure comprised of a substrate, a laser-active zone, a cover layer and an electrically contacting metal layer for the cover layer with the cover layer being underetched such that a mushroom-shaped structure is formed in which the laser-active zone is constricted to a stripe-shaped region. The ratio of the width of the cover layer to the width of the laser-active zone lies in a range between two and five, and the cover layer is electrically conductively connected with the metal layer on its outer surface as well as on at least one of its side surfaces.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.