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Ultrahigh-Q nanocavities fabricated by scanning probe microscope lithography on pre-patterned photonic crystal

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4 Author(s)
Yokoo, A. ; NTT Basic Res. Labs., NTT Corp., Atsugi, Japan ; Tanabe, T. ; Kuramochi, E. ; Notomi, M.

The details of cavity formation mechanism are described in this paper. The pre-patterned structure is a line defect waveguide in a two-dimensional (2D) photonic crystal slab, and we assume that the refractive index is modulated in the yellow shaded region. A very small spatial index modulation (Δn/n <; 0.1%) changes the mode-gap edge frequency of the modified area to create barrier regions, while the unmodified area retains its original mode-gap edge frequency. As a result, an ultrahigh-Q cavity with a small volume can be created.

Published in:

Photonics Conference (PHO), 2011 IEEE

Date of Conference:

9-13 Oct. 2011