000199870 001__ 199870
000199870 005__ 20190316235928.0
000199870 0247_ $$2doi$$a10.1038/srep05124
000199870 022__ $$a2045-2322
000199870 02470 $$2ISI$$a000336529200003
000199870 037__ $$aARTICLE
000199870 245__ $$aAutomated optimization of photonic crystal slab cavities
000199870 269__ $$a2014
000199870 260__ $$bNature Publishing Group$$c2014$$aLondon
000199870 300__ $$a8
000199870 336__ $$aJournal Articles
000199870 520__ $$aThanks to their high quality factor, combined to the smallest modal volume, defect-cavities in photonic crystal slabs represent a promising, versatile tool for fundamental studies and applications in photonics. In paricular, the L3, H0, and H1 defects are the most popular and widespread cavity designs, due to their compactness, simplicity, and small mode volume. For these cavities, the current best optimal designs still result in Q-values of a few times 10(5) only, namely one order of magnitude below the bound set by fabrication imperfections and material absorption in silicon. Here, we use a genetic algorithm to find a global maximum of the quality factor of these designs, by varying the positions of few neighbouring holes. We consistently find Q-values above one million - one order of magnitude higher than previous designs. Furthermore, we study the effect of disorder on the optimal designs and conclude that a similar improvement is also expected experimentally in state-of-the-art systems.
000199870 6531_ $$aPhotonic crystal
000199870 6531_ $$aNanocavity
000199870 6531_ $$aCavity
000199870 6531_ $$aQuality factor
000199870 6531_ $$aCQED
000199870 6531_ $$aPhotonics
000199870 700__ $$0246209$$g200590$$aMinkov, Momchil
000199870 700__ $$aSavona, Vincenzo$$g103561$$0240001
000199870 773__ $$j4$$tScientific Reports$$k5124
000199870 8564_ $$uhttps://infoscience.epfl.ch/record/199870/files/Minkov_Savona_SR_2014.pdf$$zPublisher's version$$s1468261$$yPublisher's version
000199870 909C0 $$xU10570$$0252001$$pLTPN
000199870 909CO $$qGLOBAL_SET$$pSB$$ooai:infoscience.tind.io:199870$$particle
000199870 917Z8 $$x103561
000199870 937__ $$aEPFL-ARTICLE-199870
000199870 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000199870 980__ $$aARTICLE