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Proceedings Paper

Highly directional emission from ultra-small photonic crystal resonators
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Paper Abstract

Here, we emphasize the importance of a bottom reflector for achieving unidirectional far-field emission. As a result, over 80% of photons generated inside the cavity can be collected within a divergence angle of ±30° from the top. We also discuss interesting analogy in which the nanocavity-bottom reflector coupled system is treated as a point-like emitter in front of a mirror. Based on such a view point, the observed directivity is explained by using a comprehensive interference model. Finally, we propose a very practical form of an efficient photonic crystal nanolaser bonded on a flat metal surface, which may enable current injection and room-temperature continuous-wave operation.

Paper Details

Date Published: 20 August 2009
PDF: 8 pages
Proc. SPIE 7402, Nanoengineering: Fabrication, Properties, Optics, and Devices VI, 74020G (20 August 2009); doi: 10.1117/12.826561
Show Author Affiliations
Se-Heon Kim, California Institute of Technology (United States)
Yong-Hee Lee, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Jingqing Huang, California Institute of Technology (United States)
Axel Scherer, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 7402:
Nanoengineering: Fabrication, Properties, Optics, and Devices VI
Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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