Back to Search
Start Over
Enhanced terahertz third-harmonic generation in graphene–metal metasurface with bound states in the continuum.
- Source :
-
Journal of Applied Physics . 1/14/2023, Vol. 133 Issue 2, p1-7. 7p. - Publication Year :
- 2023
-
Abstract
- We propose a graphene–metal metasurface with bound states in the continuum (BICs) for the enhancement of terahertz (THz) third-harmonic generation (THG). With the adjustment of graphene Fermi level, the parameter-tuned BICs produced by the graphene–metal metasurface can make the transition to distinct quasi-BICs. It enables strong confinement of the localized field in monolayer graphene. By exploiting the large third-order nonlinearity of graphene, the efficient THG process at the quasi-BICs can be boosted under low pump threshold. With the 50 kW/cm2 of fundamental THz incidence, a THG conversion efficiency as high as ∼3% is achievable at the quasi-BICs regime. This renders the BIC metasurfaces very attractive for THz nonlinear photonics. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BOUND states
*FERMI level
*GRAPHENE
*ERBIUM
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 133
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 161307544
- Full Text :
- https://doi.org/10.1063/5.0132059