Bright Optical Eigenmode of 1 nm3 Mode Volume
Abstract
We report on the discovery and rationale to devise bright single optical eigenmodes that feature quantum-optical mode volumes of about 1 nm3 . Our findings rely on the development and application of a quasinormal mode theory that self-consistently treats fields and electron nonlocality, spill-out, and Landau damping around atomistic protrusions on a metallic nanoantenna. By outpacing Landau damping with radiation via properly designed antenna modes, the extremely localized modes become bright with radiation efficiencies reaching 30% and could provide up to 4 ×107 times intensity enhancement.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 2021
- DOI:
- 10.1103/PhysRevLett.126.257401
- arXiv:
- arXiv:2009.04321
- Bibcode:
- 2021PhRvL.126y7401L
- Keywords:
-
- Physics - Optics