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arXiv · 0711.2126

Direct observation of higher-order whispering-gallery modes in VCSELs at room temperature by embedding a defect-free surface micro-structure

Tsin-Dong Lee·Chih-Yao Chen·YuanYao Lin·Chia-Yu Chang·Ming-Chiu Chou·Hung-Pin D. Yang·Te-ho Wu·Ray-Kuang Lee
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Abstract

We propose and demonstrate a direct method to observe higher-order whispering-gallery modes in vertical cavity surface emitting lasers (VCSELs) at room temperature. Instead of introducing any defect mode, we show that suppression of lower-order cavity modes can be achieved by destroying vertical reflectors with a surface micro-structure. Up to the 23rd azimuthal order whispering-gallery mode confined laterally by the native oxide layers is observed in experiments through collecting near-field radiation patterns. Various vertical emission transverse modes are identified by the spectrum in experiments as well as numerical simulations.

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Tsin-Dong Lee, Chih-Yao Chen, YuanYao Lin, Chia-Yu Chang, Ming-Chiu Chou, Hung-Pin D. Yang, Te-ho Wu, Ray-Kuang Lee. 2007-11-14. Direct observation of higher-order whispering-gallery modes in VCSELs at room temperature by embedding a defect-free surface micro-structure. https://arxiv.org/abs/0711.2126

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