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.
© 2012 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription