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Proceedings Paper

Ultra-fast dynamic control of the Q factor in a photonic crystal nanocavity
Author(s): Yoshinori Tanaka; Jeremy Upham; Takushi Nagashima; Tomoaki Sugiya; Takashi Asano; Susumu Noda
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Paper Abstract

High-quality (Q) factor photonic-crystal nanocavities are currently the focus of much interest because they can strongly confine photons in a tiny space. Nanocavities with ultrahigh Q factors of up to 2,500,000 and modal volumes of a cubic wavelength have been realized. If the Q factor could be dynamically controlled within the lifetime of a photon, significant advances would be expected in areas of physics and engineering such as the slowing and/or stopping of light and quantum-information processing. Here, we review the demonstration of dynamic control of the Q factor, by constructing a system composed of a nanocavity, a waveguide with nonlinear optical response and a photonic-crystal heterointerface mirror. The Q factor of the nanocavity was successfully changed from 3,800 to 22,000 within picoseconds.

Paper Details

Date Published: 22 February 2008
PDF: 9 pages
Proc. SPIE 6892, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII, 68920C (22 February 2008); doi: 10.1117/12.775078
Show Author Affiliations
Yoshinori Tanaka, Kyoto Univ. (Japan)
Jeremy Upham, Kyoto Univ. (Japan)
Takushi Nagashima, Kyoto Univ. (Japan)
Tomoaki Sugiya, Kyoto Univ. (Japan)
Takashi Asano, Kyoto Univ. (Japan)
Susumu Noda, Kyoto Univ. (Japan)

Published in SPIE Proceedings Vol. 6892:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII
Jin-Joo Song; Kong-Thon Tsen; Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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