Parity-Time Symmetric and Non-Hermitian Photonic Structures
Abstract
This proposal makes use of somenewly developed notions in non-Hermitian optics based on parity-time (PT) symmetry. PTsymmetry can lead to unusual and previously unattainable light propagation characteristics like forexample, unidirectional invisibility, absorption enhanced transmittivity, perfect coherentabsorption, band-merging at the PT-symmetry-breaking transition points and enhanced sensitivity,to mention a few. Here we propose to exploit the intriguing features associated with PT-symmetryand non-Hermiticity in order to develop new strategies in designing novel classes of complexphotonic materials, structures, and systems, with desired properties and functionalities- some ofthem not possible in standard arrangements. In particular, our efforts will be directed along thefollowing lines of reasearch: (i) theoretical investigations on how to use exceptional points as ameans to enhance the Sagnac sensitivity of ring-laser gyroscopes; (ii) theoretical and experimentalstudies as to the prospect for new families of robust, chiral mode-convertors (in either the spatialor polarization domain) based on encircling exceptional points; (iii) study how parity-timesymmetry can be judiciously employed in order to promote stable lasing in topologically protectededge-modes even in the presence of fabrication defects or any other imperfections. Other researchtopics will include fundamental studies of EP-state conversion based on higher-order exceptionalpoints and lines as well as the possibility of generalizing existing band theories concerningtopological periodic photonic systems in non-Hermitian and PT-symmetric settings. The tasksproposed here will range from fundamental theoretical aspects, to structure/device design andfabrication, to experimental demonstrations, and prototype system synthesis.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 10, 2018
- Source ID
- N000141812347
Entities
People
- Demetrios N. Christodoulides
Organizations
- Office of Naval Research
- United States Navy
- University of Central Florida Board of Trustees