A Caltech Library Service

Optimization of Q factor in optical nanocavities based on free-standing membranes

Vučković, Jelena and Scherer, Axel (2002) Optimization of Q factor in optical nanocavities based on free-standing membranes. In: Photonic Bandgap Materials and Devices. Proceedings of SPIE. No.4655. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 192-199. ISBN 0819443948.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


We express the quality factor of a mode in terms of the Fourier transforms of its field components, and prove that the reduction in radiation loss can be achieved by suppressing the mode's wave-vector components within the light cone. Although this is intuitively clear, our analytical proof gives us insight into how to achieve the Q factor optimization, without the mode delocalization. We focus on the dipole defect mode in free standing membrane and achieve Q > 10^4, while preserving the mode volume of the order of one half of cubic wavelength in material. The derived expressions and conclusions can be used in optimization of Q factor for any type of defect in planar photonic crystals.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Additional Information:© 2002 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported by the Caltech MURI Center for Quantum Networks.
Funding AgencyGrant Number
Army Research Office (ARO)UNSPECIFIED
Subject Keywords:Q factor, optical resonators, integrated optics, optoelectronic devices, optics, FDTD methods, Fourier transforms , microcavity, photonic crystals , photonic bandgap
Series Name:Proceedings of SPIE
Issue or Number:4655
Record Number:CaltechAUTHORS:20180709-092532025
Persistent URL:
Official Citation:Jelena Vuckovic, Axel Scherer, "Optimization of Q factor in optical nanocavities based on free-standing membranes", Proc. SPIE 4655, Photonic Bandgap Materials and Devices, (25 April 2002); doi: 10.1117/12.463873;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87633
Deposited By: George Porter
Deposited On:09 Jul 2018 16:52
Last Modified:15 Nov 2021 20:50

Repository Staff Only: item control page