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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. https://resolver.caltech.edu/CaltechAUTHORS:20180709-092532025

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Abstract

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
https://doi.org/10.1117/12.463873DOIArticle
Additional Information:© 2002 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported by the Caltech MURI Center for Quantum Networks.
Funders:
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:https://resolver.caltech.edu/CaltechAUTHORS:20180709-092532025
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; https://doi.org/10.1117/12.463873
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87633
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 Jul 2018 16:52
Last Modified:03 Oct 2019 19:58

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