Engineering Symmetry‐Breaking Nanocrescent Arrays for Nanolasing
Abstract
This paper describes a symmetry‐breaking plasmonic lattice structure that can support narrow resonances as optical feedback for nanolasing. A scalable technique is developed to fabricate nanocrescent arrays with low‐structural symmetry unit cells to achieve in‐plane quadrupolar lattice plasmon modes. These lattice plasmons with extremely narrow linewidths preserve nonzero net dipole moments under normal excitation. Ultrafast band‐edge lasing can be switched on and off by changing the polarization of the incident pump light. The quadrupolar lattice plasmon lasing process is simulated with a semi‐quantum model and the sharp tips on the nanocrescents accelerate the lasing buildup process and enhance stimulated emission.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 15, 2019
- Source ID
- 10.1002/adfm.201904157
Entities
People
- Danqing Wang
- Jianxi Liu
- Jingtian Hu
- Jun Guan
- Richard D. Schaller
- Teri W. Odom
- Weijia Wang
- Yuanhai Lin
Organizations
- Argonne National Laboratory
- Beijing University of Technology
- China Scholarship Council
- National Science Foundation
- Northwestern University
- United States Department of Defense