Topological insulator laser: Theory
Abstract
Ideas based on topology, initially developed in mathematics to describe the properties of geometric space under deformations, are now finding application in materials, electronics, and optics. The main driver is topological protection, a property that provides stability to a system even in the presence of defects. Harari et al. outline a theoretical proposal that carries such ideas over to geometrically designed laser cavities. The lasing mode is confined to the topological edge state of the cavity structure. Bandres et al. implemented those ideas to fabricate a topological insulator laser with an array of ring resonators. The results demonstrate a powerful platform for developing new laser systems.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 16, 2018
- Source ID
- 10.1126/science.aar4003
Entities
People
- Demetrios N. Christodoulides
- Gal Harari
- Mercedeh Khajavikhan
- Miguel A Bandres
- Mikael C Rechtsman
- Mordechai Segev
- Yaakov Lumer
- Yidong Chong
Organizations
- Air Force Office of Scientific Research
- Alfred P. Sloan Foundation
- Army Research Office
- Israel Science Foundation
- Nanyang Technological University
- National Science Foundation
- Office of Naval Research
- Pennsylvania State University
- Pittsburgh Foundation
- University of Central Florida
- University of Pennsylvania