Abstract

In a recent work [Akahane et al., Nature 425, 944 (2003)], quality factors in excess of 45,000 have been observed in photonic crystal nanocavities. Such high values have been achieved through a surprising ≈10-times Q enhancement induced by a fine shift (60 nm) of holes surrounding the cavity defect region. We explain why.

© 2004 Optical Society of America

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