Lasing on higher-order whispering gallery modes at room temperature

We report 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 su...

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Bibliographic Details
Main Authors: Chih-Yao Chen, YuanYao Lin, Ching-Jen Cheng, Tsin-Dong Lee, Ray-Kuang Lee
Format: Conference Proceeding
Language:English
Subjects:
(140.3948) Microcavity devices
(140.7260) Vertical cavity surface emitting lasers
Laser modes
Optical filters
Optical resonators
Optical sensors
Optical surface waves
Photonic crystals
Temperature
Threshold current
Vertical cavity surface emitting lasers
Whispering gallery modes
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Description
Summary:We report 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. Perfect whispering gallery modes with an azimuthal number as large as 41 are observed in experiments through collecting near-field radiation patterns, as well as in numerical simulations.
ISSN:2160-9004
DOI:10.1364/cleo.2009.jthe95