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Proceedings Paper

Design of high power VCSEL arrays
Author(s): Holger Moench; Raimond Dumoulin; Stephan Gronenborn; Xi Gu; Gero Heusler; Johanna Kolb; Michael Miller; Pavel Pekarski; Jens Pollmann-Retsch; Armand Pruijmboom; Martin Stroesser
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Paper Abstract

High power VCSEL arrays can be used as a versatile illumination and heating source. They are widely scalable in power and offer a robust and economic solution for many new applications with moderate brightness requirements. The design of high power VCSEL arrays requires a concurrent consideration of mechanical, thermal, optical and electrical aspects. Especially the heat dissipation from the loss regions in the VCSEL mesas into the surrounding materials and finally towards the heat sink is discussed in detail using analytical and finite element calculations. Basic VCSEL properties can be separated from the calculation of thermal resistivity and only the latter depends on the details of array design. Guidelines are derived for shape, size and pitch of the VCSEL mesas in an array and optimized designs are presented. The electro-optical efficiency of the VCSELs and the material properties determine the operation point. A specific VCSEL design with the shape of elongated rectangles is discussed in more depth. The theoretical predictions are confirmed by measurements on practical modules of top-emitting structures as well as of bottom-emitting structures.

Paper Details

Date Published: 7 February 2012
PDF: 8 pages
Proc. SPIE 8276, Vertical-Cavity Surface-Emitting Lasers XVI, 82760B (7 February 2012); doi: 10.1117/12.906654
Show Author Affiliations
Holger Moench, Philips Technologie GmbH Innovative Technologies (Germany)
Raimond Dumoulin, Philips Lighting BV (Netherlands)
Stephan Gronenborn, Philips Technologie GmbH Innovative Technologies (Germany)
Xi Gu, Philips Lighting BV (Netherlands)
Gero Heusler, Philips Technologie GmbH (Germany)
Johanna Kolb, Philips Technologie GmbH Innovative Technologies (Germany)
Michael Miller, Philips Technologie GmbH U-L-M Photonics (Germany)
Pavel Pekarski, Philips Technologie GmbH Innovative Technologies (Germany)
Jens Pollmann-Retsch, Philips Technologie GmbH Innovative Technologies (Germany)
Armand Pruijmboom, Philips Lighting BV (Netherlands)
Martin Stroesser, Philips Technologie GmbH Innovative Technologies (Germany)

Published in SPIE Proceedings Vol. 8276:
Vertical-Cavity Surface-Emitting Lasers XVI
Chun Lei; Kent D. Choquette, Editor(s)

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