Laser diode with improved electrical conduction properties

US10498105B2 · kind B2 · utility

Assignee

• Forschungsverbund Berlin e.V. · DE

Inventors

• Joerg Fricke · Berlin, DE
• Jonathan Decker · Berlin, DE
• Paul Crump · Berlin, DE
• Goetz Erbert · Plauen, DE

Key dates

• Filing date: Feb 18, 2016
• Grant date: Dec 3, 2019
• Expiry date: Feb 18, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/50
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to a laser diode (10) which has at least one active layer (12) which is arranged within a resonator (14) and is operatively connected to a outcoupling element (16), and further at least one contact layer (18) for coupling charge carriers into the active layer (12), wherein the resonator (14) comprises at least a first section (20) and a second section (22), wherein the second section (22) comprises a plurality of separate resistor elements (24) having a specific electrical resistivity greater than the specific electrical resistivity of the regions (26) between adjacent resistor elements (24), wherein a width (W3) of the resistor elements (24) along a longitudinal axis (X1) of the active layer (12) is less than 20 μm, and a projection of the resistor elements (24) on the active layer (12) along the first axis (Z1) overlap with at least 10% of the active layer (12).