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Main Title: Thermal analysis of high-bandwidth and energy-efficient 980 nm VCSELs with optimized quantum well gain peak-to-cavity resonance wavelength offset
Author(s): Li, Hui
Wolf, Philip
Jia, Xiaowei
Lott, James A.
Bimberg, Dieter
Type: Article
Language Code: en
Abstract: The static and dynamic performance of vertical-cavity surface-emitting lasers (VCSELs) used as light-sources for optical interconnects is highly influenced by temperature. We study the effect of temperature on the performance of high-speed energy-efficient 980 nm VCSELs with a peak wavelength of the quantum well offset to the wavelength of the fundamental longitudinal device cavity mode so that they are aligned at around 60 °C. A simple method to obtain the thermal resistance of the VCSELs as a function of ambient temperature is described, allowing us to extract the active region temperature and the temperature dependence of the dynamic and static parameters. At low bias currents, we can see an increase of the −3 dB modulation bandwidth f−3dB with increasing active region temperature, which is different from the classically known situation. From the detailed analysis of f−3dB versus the active region temperature, we obtain a better understanding of the thermal limitations of VCSELs, giving a basis for next generation device designs with improved temperature stability.
Issue Date: 2017
Date Available: 22-May-2020
DDC Class: 530 Physik
Subject(s): thermodynamic states and processes
thermal conductivity
quantum wells
semiconductor lasers
thermal analysis
Fabry-Perot interferometers
optical communications
cavity resonance
emission spectroscopy
Journal Title: Applied Physics Letters
Publisher: American Institute of Physics (AIP)
Publisher Place: Melville, NY
Volume: 111
Issue: 24
Article Number: 243508
Publisher DOI: 10.1063/1.5003288
EISSN: 1077-3118
ISSN: 0003-6951
Notes: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 111, 243508 (2017) and may be found at
Appears in Collections:Inst. Festkörperphysik » Publications

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