Bloch oscillations and Zener tunneling in two-dimensional photonic lattices.
We report on the first experimental observation of photonic Bloch oscillations and Zener tunneling in two-dimensional periodic systems. We study the propagation of an optical beam in a square lattice superimposed on a refractive index ramp. We observe oscillations of the beam inside the first Brilloin zone and tunneling of light from the first to the higher-order bands of the lattice band gap spectrum.
Nonlinear Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia.
Henrike
H
Trompeter
Wieslaw
W
Krolikowski
Dragomir N
DN
Neshev
Anton S
AS
Desyatnikov
Andrey A
AA
Sukhorukov
Yuri S
YS
Kivshar
Thomas
T
Pertsch
Ulf
U
Peschel
Falk
F
Lederer