Open AccessThree-Dimensional Beam Propagation Modeling of Nanostructured Whispering-Gallery Microcavities
Author(s) -
Mohammad Amin Cheraghi Shirazi,
Serge Vincent,
Tao Lu
Publication year - 2016
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2016.2533925
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
Using a scalar 3-D beam propagation technique in a cylindrical coordinate system, we demonstrate that a nanohole bored in a whispering-gallery microcavity sensor with an inserted 25-nm-radius polystyrene particle can dually enhance the detection signal (by a factor of ~6) and maintain a quality factor of 7.6 × 108 (after degradation by a factor as little as 3) at a wavelength of 633 nm. Detailed numerical characterization of the resonant light circulating in this nanostructured cavity is provided, including aspects of stability and convergence.