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High-power VCSELs with a rectangular aperture |
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| Authors: | |
| Institution: | 1.Chair for Technology of Optical Systems,RWTH Aachen University,Aachen,Germany;2.Philips Research Laboratories,Aachen,Germany;3.Philips Technologie GmbH U-L-M Photonics,Ulm,Germany |
| Abstract: | We show how VCSELs with elongated shapes of the emission area can achieve higher output powers and wall-plug efficiency compared to standard circular or quadratic VCSELs. We identified an improved homogeneity of the carrier concentration in the quantum wells as well as a reduced thermal resistance as the main reasons for the better performance of the rectangular shaped VCSELs presented in this article. |
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