Mattiucci, NadiaBloemer, Mark J.D’Aguanno, Giuseppe2020-05-272020-05-272012-07-18Nadia Mattiucci et al., Giant field localization in 2-D photonic crystal cavities with defect resonances: Bringing nonlinear optics to the W/cm² level, AIP Advances, Volume 2, Issue 3 (2012); https://doi.org/10.1063/1.4739270https://doi.org/10.1063/1.4739270http://hdl.handle.net/11603/18767We investigate the field localization properties in a 2-D photonic crystal cavity with defect resonances. Although based on a simple geometry, these resonances achieve extremely high quality (Q)-factors ∼10⁸. We provide an example of a chalcogenide glass (As₂S₃) photonic crystal cavity where all-optical switching at telecommunication wavelengths can be obtained for input intensity ∼W/cm² and local field intensity in the crystal well below the photodarkening threshold of the material.7 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Public Domain Mark 1.0This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.http://creativecommons.org/publicdomain/mark/1.0/Text