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Finite-difference time-domain calculation of the spontaneous-emission coupling factor in optical microcavities

Vučković, Jelena and Painter, Oskar and Xu, Yong and Scherer, Axel (1999) Finite-difference time-domain calculation of the spontaneous-emission coupling factor in optical microcavities. IEEE Journal of Quantum Electronics, 35 (8). pp. 1168-1175. ISSN 0018-9197. http://resolver.caltech.edu/CaltechAUTHORS:VUCieeejqe99

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Abstract

We present a general method for the β factor calculation in optical microcavities. The analysis is based on the classical model for atomic transitions in a semiconductor active medium. The finite-difference time-domain method is used to evolve the electromagnetic fields of the system and calculate the total radiated energy, as well as the energy radiated into the mode of interest. We analyze the microdisk laser and compare our result with the previous theoretical and experimental analyses. We also calculate the β factor of the microcavity based on a two-dimensional (2-D) photonic crystal in an optically thin dielectric slab. From the β calculations, we are able to estimate the coupling to radiation modes in both the microdisk and the 2-D photonic crystal cavity, thereby showing the effectiveness of the photonic crystal in suppressing in-plane radiation modes.


Item Type:Article
Additional Information:© Copyright 1999 IEEE. Reprinted with permission. Manuscript received January 14, 1999; revised April 30, 1999. This work was supported by the National Science Foundation under Contract ECS-9632937 and by DARPA under Contract N00014-96-1-1295. The authors would like to thank M. Lončar for many helpful suggestions.
Subject Keywords:β factor, finite-difference time-domain methods, microcavity, microdisk, photonic crystals, spontaneous emission
Record Number:CaltechAUTHORS:VUCieeejqe99
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:VUCieeejqe99
Alternative URL:http://dx.doi.org/10.1109/3.777216
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2792
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:27 Apr 2006
Last Modified:26 Dec 2012 08:51

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