Su, M.
and Mirin, R.
(2006),
Enhanced light extraction from circular Bragg grating coupled microcavities, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32171 (Accessed April 29, 2026)
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Enhanced light extraction from circular Bragg grating coupled microcavities
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Author(s)
,
Abstract
A sevenfold enhancement of light extraction over a 130 nm bandwidth from a semiconductor at room temperature was achieved using circular Bragg gratings (CBGs) etched around the periphery of a vertical-cavity light-emitting structure. The CBG defined an in-plane circular cavity for light trapped in guided modes. Maximum enhancement was observed with CBGs that efficiently coupled circular cavity modes into resonant extracted modes of the vertical cavity. The enhancement factor corresponded to a 41% external efficiency.Citation
Applied Physics Letters
Volume
89
Issue
033105
Pub Type
Journals
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Keywords
extraction efficiency, grating, photonic crystal, cavity, light emitting diode
Citation
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Created July 17, 2006, Updated October 12, 2021