Direct observation of higher-order whispering-gallery modes in VCSELs at room temperature by embedding a defect-free surface micro-structure
Optics
2007-11-15 v1
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.
Keywords
Cite
@article{arxiv.0711.2126,
title = {Direct observation of higher-order whispering-gallery modes in VCSELs at room temperature by embedding a defect-free surface micro-structure},
author = {Tsin-Dong Lee and Chih-Yao Chen and YuanYao Lin and Chia-Yu Chang and Ming-Chiu Chou and Hung-Pin D. Yang and Te-ho Wu and Ray-Kuang Lee},
journal= {arXiv preprint arXiv:0711.2126},
year = {2007}
}