Laser device

US6922424B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Martin Weigert · Lindlar, DE
• Gunther Steinle · Munich, DE
• Hans-Dietrich Wolf · Gerbrunn, DE
• Hans-Ludwig Althaus · Lappersdorf, DE

Key dates

• Filing date: Jan 9, 2003
• Grant date: Jul 26, 2005
• Expiry date: Jan 9, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/183
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A laser device has a laser diode with an optical resonator. The resonator has an exit side for emitting light into an optical system. A monitor diode is provided and has a light-sensitive face for measuring optical quantities of the laser diode. The light-sensitive face of the monitor diode is optically coupled to a backside of the laser diode, on the other side from the light exit side of the resonator, the backside also emitting light. This configuration permits a space-saving SMD layout for the laser device.