skip to main content

SciTech ConnectSciTech Connect

Title: 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 ≃ 2 × 10{sup 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.
Authors:
;  [1] ; ; ; ;  [2] ; ;  [3]
  1. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States)
  2. Dipartimento di Fisica, Università di Pavia, via Bassi 6, 27100 Pavia (Italy)
  3. Laboratory of Theoretical Physics of Nanosystems, Ecole Polytechnique Federale de Lausanne EPFL, CH-1015 Lausanne (Switzerland)
Publication Date:
OSTI Identifier:
22299872
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CAVITIES; CRYSTALS; EV RANGE; MEMBRANES; NANOSTRUCTURES; OPTIMIZATION; QUALITY FACTOR; RESONATORS; SILICON