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. 2011 Jun 3;11(6):6003–6014. doi: 10.3390/s110606003

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© 2011 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 2. — (a) Calculated bandstructure of the PhC for r/a = 0.3 and n_pillar = 3.65 using the MIT Photonic Bands package [39,41]. The full bandgaps for TM-polarized light are clearly visible. The designed lasing points are M and K in the lowest band. (b) Predicted modes using finite-difference time-domain calculations [40]. The two lasing modes show a quality factor of 10³. The inset shows a schematic of the computational cell; the source is positioned in the central pillar, the probe at the side of the cell.