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Published December 24, 2001 | public
Journal Article Open

High quality two-dimensional photonic crystal slab cavities


We have fabricated and characterized donor-mode nanocavities formed by a single defect cavity defined within a two-dimensional photonic crystal slab. Quantum dots emitting in the 1.1-1.3 micron range were used as luminescence sources, and a design using fractional edge dislocations was used to demonstrate well-confined dipole modes with high quality factors. By applying the fractional dislocation geometry, the measured quality factor could be increased to values as high as 2800. This compares with typical quality factors of around 1500 measured from more conventional shallow donor mode cavities with larger mode volumes.

Additional Information

©2001 American Institute of Physics. Received 18 September 2001; accepted 24 October 2001. The authors gratefully appreciate many valuable suggestions from Marko Lončar. This work was supported by the NSF under Grant No. ECS-9912039, the DARPA under contract MDA972-00-1-0019, and the ARO under contract DAAD19-00-1-0374.


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