Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published December 14, 2012 | Published
Journal Article Open

High-Q impurity photon states bounded by a photonic band pseudogap in an optically thick photonic crystal slab


We show that, taking a two-dimensional photonic crystal slab system as an example, surprisingly high quality factors (Q) over 10^5 are achievable, even in the absence of a rigorous photonic band gap. We find that the density of in-plane Bloch modes can be controlled by creating additional photon feedback from a finite-size photonic-crystal boundary that serves as a low-Q resonator. This mechanism enables significant reduction in the coupling strength between the bound state and the extended Bloch modes by more than a factor of 40.

Additional Information

© 2012 American Physical Society. Received 6 September 2012; revised manuscript received 28 November 2012; published 14 December 2012. This work was supported by the Defense Advanced Research Projects Agency under the Nanoscale Architecture for Coherent Hyperoptical Sources program (W911NF-07-1-0277) and by the National Science Foundation under NSF CIAN ERC (EEC-0812072). A.H. appreciates the generous support of the ARCS Foundation.

Attached Files

Published - PhysRevB.86.245114.pdf


Files (2.3 MB)
Name Size Download all
2.3 MB Preview Download

Additional details

August 19, 2023
March 5, 2024