Two-cavity surface-emitting laser

US8824518B2 · kind B2 · utility

Assignee

• Forschungsverbund Berlin e.V. · DE

Inventors

• Gunther Trankle · Berlin, DE
• Joachim Piprek · Newark, US
• Hans Wenzel · Santa Ana, US
• Götz Erbert · Löbau, DE
• Markus Weyers · Wildau, DE
• Andrea Knigge · Königs Wusterhausen, DE

Key dates

• Filing date: Dec 15, 2010
• Grant date: Sep 2, 2014
• Expiry date: Dec 15, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4087
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A the vertical-cavity surface-emitting laser includes a stripe-shaped active medium (10) having an emission maximum at a first wavelength (λ1), wherein a first reflector (18) is arranged below the stripe-shaped active medium (10) and a second reflector (20) is arranged above the stripe-shaped active medium (10), with the first reflector (18) facing the second reflector (20), wherein the first reflector (18) and a second reflector (20) have a reflectivity maximum in the region of the first wavelength (λ1), wherein a third reflector (12) and a fourth reflector (13) are each arranged on a side above or next to the stripe-shaped active medium (10), wherein the third reflector (12) faces the fourth reflector (13), and wherein the third reflector (12) and the fourth reflector (13) have a reflectivity maximum in the region of a second wavelength (λ2), wherein the first wavelength (λ1) is greater than the second wavelength (λ2).