Enhanced Nonlinear Refractive Index in ε-Near-Zero Materials.
Abstrak
New propagation regimes for light arise from the ability to tune the dielectric permittivity to extremely low values. Here, we demonstrate a universal approach based on the low linear permittivity values attained in the ε-near-zero (ENZ) regime for enhancing the nonlinear refractive index, which enables remarkable light-induced changes of the material properties. Experiments performed on Al-doped ZnO (AZO) thin films show a sixfold increase of the Kerr nonlinear refractive index (n_{2}) at the ENZ wavelength, located in the 1300 nm region. This in turn leads to ultrafast light-induced refractive index changes of the order of unity, thus representing a new paradigm for nonlinear optics.
Topik & Kata Kunci
Penulis (13)
L. Caspani
R. Kaipurath
M. Clerici
M. Clerici
M. Ferrera
T. Roger
Jongbum Kim
N. Kinsey
M. Pietrzyk
A. Falco
V. Shalaev
A. Boltasseva
D. Faccio
Akses Cepat
- Tahun Terbit
- 2016
- Bahasa
- en
- Total Sitasi
- 318×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1103/PhysRevLett.116.233901
- Akses
- Open Access ✓