Laser light source

US8306084B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Wolfgang Reill · Pentling, DE
• Soenke Tautz · Tegernheim, DE
• Peter Brick · Regensburg, DE
• Uwe Strauss · Bad Abbach, DE

Key dates

• Filing date: Dec 16, 2008
• Grant date: Nov 6, 2012
• Expiry date: Apr 13, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/1064
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A laser light source comprises, in particular, a semiconductor layer sequence (10) having an active layer having at least two active regions (45) which are suitable for emitting electromagnetic radiation during operation via a side area of the semiconductor layer sequence (10) along an emission direction (90), said side area being embodied as a radiation coupling-out area (12), a respective electrical contact area (30) above each of the at least two active regions (45) on a main surface (14) of the semiconductor layer sequence (10), and a surface structure in the main surface (14) of the semiconductor layer sequence (10), wherein the at least two active regions (45) are arranged in a manner spaced apart from one another in the active layer (40) transversely with respect to the emission direction (90), each of the electrical contact areas (30) has a first partial region (31) and a second partial region (32) having a width that increases along the emission direction (90) toward the radiation coupling-out area (12), the surface structure has, between the at least two electrical contact areas (30), at least one first depression (6) along the emission direction (90) and also second depr…