Finite-difference time-domain calculation of the spontaneous-emission coupling factor in optical microcavities
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.
Additional Information
© 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.Attached Files
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Additional details
- Eprint ID
- 2792
- Resolver ID
- CaltechAUTHORS:VUCieeejqe99
- NSF
- ECS-9632937
- Defense Advanced Research Projects Agency (DARPA)
- Office of Naval Research (ONR)
- N00014-96-1-1295
- Created
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2006-04-27Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field