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First-principle derivation of gain in high-index-contrast waveguides

Robinson, Jacob T. and Preston, Kyle and Painter, Oskar and Lipson, Michael (2008) First-principle derivation of gain in high-index-contrast waveguides. Optics Express, 16 (21). pp. 16659-16669. ISSN 1094-4087.

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From first principles we develop figures of merit to determine the gain experienced by the guided mode and the lasing threshold for devices based on high-index-contrast waveguides. We show that as opposed to low-index-contrast systems, this quantity is not equivalent to the power confinement since in high-index-contrast structures the electric and magnetic field distributions cannot be related by proportionality constant. We show that with a slot waveguide configuration it is possible to achieve more gain than one would expect based on the power confinement in the gain media. Using the figures of merit presented here we optimize a slot waveguide geometry to achieve low-threshold lasing and discuss the fabrication tolerances of such a design.

Item Type:Article
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Painter, Oskar0000-0002-1581-9209
Additional Information:© 2008 Optical Society of America. Received 15 July 2008; revised 22 September 2008; accepted 30 September 2008; published 3 October 2008. The authors gratefully acknowledge Thomas L. Koch for his helpful discussions and Christina Manolatou for the use of her finite difference mode solver. Research support is gratefully acknowledged from the National Science Foundation Center on Materials and Devices for Information Technology Research (CMDITR), DMR-0120967, the National Science Foundation’s CAREER Grant No. 0446571, and the U.S. Air Force MURI program on “Electrically-Pumped Silicon-Based Lasers for Chip-Scale Nanophotonic Systems” supervised by Dr. Gernot Pomrenke.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Subject Keywords:optical guided waves; integrated optics devices; rare earth and transition metal solid-state lasers
Issue or Number:21
Record Number:CaltechAUTHORS:ROBoe08
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Official Citation:J. T. Robinson, K. Preston, O. Painter, and M. Lipson, "First-principle derivation of gain in high-index-contrast waveguides," Opt. Express 16, 16659-16669 (2008)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12335
Deposited By: Archive Administrator
Deposited On:12 Nov 2008 03:20
Last Modified:03 Oct 2019 00:27

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