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APS » Journals » Phys. Rev. Lett. » Volume 78 » Issue 17
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Phys. Rev. Lett. 78, 3294–3297 (1997)

High Extraction Efficiency of Spontaneous Emission from Slabs of Photonic Crystals

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Shanhui Fan, Pierre R. Villeneuve, and J. D. Joannopoulos
Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139

E. F. Schubert
Center for Photonics Research, Department of Electrical and Computer Engineering, Boston University, 44 Cummington Street, Boston, Massachusetts 02215

Received 16 October 1996; published in the issue dated 28 April 1997

A thin slab of two-dimensional photonic crystal is shown to alter drastically the radiation pattern of spontaneous emission. More specifically, by eliminating all guided modes at the transition frequencies, spontaneous emission can be coupled entirely to free space modes, resulting in a greatly enhanced extraction efficiency. Such structures might provide a solution to the long-standing problem of poor light extraction from high refractive-index semiconductors in light-emitting diodes.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.78.3294
DOI:
10.1103/PhysRevLett.78.3294
PACS:
42.70.Qs, 41.20.Jb
 
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