Reconfigurable Directional Lasing Modes in Cavities with Generalized PT ∼ Symmetry
Abstract
We introduce a new family of generalized PT ∼-symmetric cavities that involve gyrotropic elements and support reconfigurable unidirectional lasing modes. We derive conditions for which these modes exist and investigate a simple electronic circuit that experimentally demonstrates their feasibility in the radio-frequency domain.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 2014
- DOI:
- 10.1103/PhysRevLett.112.253902
- Bibcode:
- 2014PhRvL.112y3902L
- Keywords:
-
- 42.55.Sa;
- 05.60.-k;
- 11.30.Er;
- 42.25.Bs;
- Microcavity and microdisk lasers;
- Transport processes;
- Charge conjugation parity time reversal and other discrete symmetries;
- Wave propagation transmission and absorption