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Proceedings Paper

Toward efficient unidirectional photonic crystal light emitters
Author(s): Se-Heon Kim; Sun-Kyung Kim; Yong-Hee Lee
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Paper Abstract

We propose efficient unidirectional light emitters, which are enabled by the use of large Purcell effect, defect engineering, and the bottom Bragg reflector. Enhanced spontaneous emission rate enables us to achieve very efficient light sources, in which most of the emitted photons can be funneled into a specific resonant mode of interest. The far-field radiation properties of a photonic crystal resonant mode are modified by tuning the cavity geometry and by placing a reflector below the cavity. As a result, > 80% of the photons generated inside a photonic crystal resonator can be collected from the top, within a small divergence angle of ±30°.

Paper Details

Date Published: 6 October 2006
PDF: 9 pages
Proc. SPIE 6352, Optoelectronic Materials and Devices, 635213 (6 October 2006); doi: 10.1117/12.688577
Show Author Affiliations
Se-Heon Kim, Korea Advanced Institute of Science and Technology (South Korea)
Sun-Kyung Kim, Korea Advanced Institute of Science and Technology (South Korea)
Yong-Hee Lee, Korea Advanced Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 6352:
Optoelectronic Materials and Devices
Yong Hee Lee; Fumio Koyama; Yi Luo, Editor(s)

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