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Proceedings Paper

Red VCSEL for automotive applications
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Paper Abstract

In this paper we discuss the problems of the AlGaInP material system and its consequences for the laser applications in vertical-cavity surface-emitting lasers (VCSEL). The epitaxial and technological solutions to overcome at least parts of the inherent problems were presented. Measured power-current curves of 660nm AlGaInP-based oxide-confined VCSEL are compared with calculated data by a cylindrical heat dissipation model to improve heat removal out of the device. Pulsed lasing operation of a 670nm VCSEL at +120°C heat sink temperature is demonstrated, where we exceeded 0.5mW and at +160°C still 25μW output power were achieved. We also studied the modulation bandwidth of our devices and achieved 4GHz and calculations lead to a maximum possible intrinsic -3dB frequency of 25GHz.

Paper Details

Date Published: 16 February 2005
PDF: 12 pages
Proc. SPIE 5663, Photonics in the Automobile, (16 February 2005); doi: 10.1117/12.597025
Show Author Affiliations
Robert Rossbach, Univ. Stuttgart (Germany)
Tabitha Ballmann, Univ. Stuttgart (Germany)
Rainer Butendeich, OSRAM Opto Semiconductors GmbH (Germany)
Ferdinand Scholz, Univ. Ulm (Germany)
Heinz Schweizer, Univ. Stuttgart (Germany)
Michael Jetter, Univ. Stuttgart (Germany)


Published in SPIE Proceedings Vol. 5663:
Photonics in the Automobile
Thomas P. Pearsall, Editor(s)

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