Title: Dielectric-Band Photonic Crystal Nanobeam Lasers
Authors: Lee, Po-Tsung
Lu, Tsan-Wen
Chiu, Li-Hsun
National Chiao Tung University
Department of Photonics
Keywords: Photonic crystal (PhC);nanobeam (NB);nanocavity;semiconductor laser
Issue Date: 1-Jan-2013
Abstract: We investigate a mode gap confined dielectric band laser via a 1-D photonic crystal (PhC) nanobeam (NB) nanocavity with lattice gradually shifted PhC mirror. Owing to different modal symmetries, different zeroth-order dielectric mode properties, including quality (Q) factors, mode volumes, lasing thresholds, and slope efficiencies, in nanocavities with two different cavity sizes are investigated. In experiments, single-mode lasing from dielectric bands with low effective lasing thresholds is obtained. Rising of the high-order modes is also observed when we increase the PhC mirror periods for high Q factor of the zeroth-order dielectric mode. In addition, we observe the bonding and antibonding modes in beamwidth mismatched coupled NB nanocavities and switch the dominant lasing mode via spatially nonuniform carrier injection.
URI: http://dx.doi.org/10.1109/JLT.2012.2229695
ISSN: 0733-8724
DOI: 10.1109/JLT.2012.2229695
Volume: 31
Issue: 1
Begin Page: 36
End Page: 42
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