Genetically designed L3 photonic crystal nanocavities with measured quality factor exceeding one million

We report on the experimental realization of ultra-high quality factor (Q) designs of the L3-type photonic crystal nanocavity. Based on genetic optimization of the positions of few nearby holes, our design drastically improves the performance of the conventional L3 as experimentally confirmed by direct measurement of Q similar or equal to 2 x 10(6) in a silicon-based photonic crystal membrane. Our devices rank among the highest Q/V ratios ever reported in photonic crystal cavities, holding great promise for the realization of integrated photonic platforms based on ultra-high-Q resonators. (C) 2014 AIP Publishing LLC.


Published in:
Applied Physics Letters, 104, 24, 241101
Year:
2014
Publisher:
Melville, American Institute of Physics
ISSN:
0003-6951
Laboratories:




 Record created 2014-08-29, last modified 2018-03-17

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