title: Reconfigurable, defect-free, ultrahigh-Q photonic crystal microcavities for sensing.
abstract: We propose a new approach for creating reconfigurable high-Q cavities in defect-free photonic crystal slabs (PCSs). The approach relies on selective air-hole infiltration in otherwise defect-free PCSs. We show that using this method we can design ultrahigh-Q microcavities, with Q~10(6). Numerical calculations indicate a large number of high-Q modes with high sensitivity, which are ideal for simultaneous, multi-parameter refractive index-based sensing.
authors.affiliation: School of Physics, University of Melbourne, Parkville, VIC 3010, Australia. snjezana.thanic@unimelb.edu.au
authors.forename: Snjezana
authors.initials: S
authors.lastname: Tomljenovic-Hanic
authors.forename: C Martijn
authors.initials: CM
authors.lastname: de Sterke
mesh_terms: D004867:Equipment Design; D036103:Nanotechnology; D055095:Optics and Photonics; D017785:Photons; D012031:Refractometry; D012825:Silicon / Q000737:chemistry*
chemical_list: D012825:Silicon