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Published August 20, 2009 | Published
Book Section - Chapter Open

Highly directional emission from ultra-small photonic crystal resonators


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.

Additional Information

© 2009 SPIE--The International Society for Optical Engineering. Online Publication Date: 20 August 2009; conference date: Tuesday 4 August 2009. This work was supported in part by the Air Force Office of Scientific Research (FA9550-04-1-0434), the Army Research Office (W911NF-07-1-0277), and the National Science Foundation (EEC-0812072). We gratefully acknowledge critical support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech.

Attached Files

Published - Kim2009p8102Icton_2009_11Th_International_Conference_On_Transparent_Optical_Networks_Vols_1_And_2.pdf



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