TY - JOUR
T1 - Negative refraction in tunable periodic photonic structures
AU - Rosberg, Christian R.
AU - Neshev, Dragomir N.
AU - Sukhorukov, Andrey A.
AU - Krolikowski, Wieslaw
AU - Kivshar, Yuri S.
PY - 2005
Y1 - 2005
N2 - We predict theoretically and observe experimentally tunable refraction of beams in optically-induced lattices. By selective excitation of different Bloch modes in a tilted lattice, we observe positive and negative refraction for beams associated with the first and the second spectral band, respectively. We demonstrate tunability of the output beam position by dynamically adjusting the lattice depth. At higher laser intensities, the beam broadening due to diffraction can be suppressed through nonlinear self-focusing while preserving the general steering properties.
AB - We predict theoretically and observe experimentally tunable refraction of beams in optically-induced lattices. By selective excitation of different Bloch modes in a tilted lattice, we observe positive and negative refraction for beams associated with the first and the second spectral band, respectively. We demonstrate tunability of the output beam position by dynamically adjusting the lattice depth. At higher laser intensities, the beam broadening due to diffraction can be suppressed through nonlinear self-focusing while preserving the general steering properties.
UR - http://www.scopus.com/inward/record.url?scp=32344440171&partnerID=8YFLogxK
U2 - 10.1117/12.622634
DO - 10.1117/12.622634
M3 - Conference article
AN - SCOPUS:32344440171
SN - 0277-786X
VL - 5950
SP - 1
EP - 7
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
M1 - 59500C
T2 - Photonic Crystals and Fibres
Y2 - 30 August 2005 through 1 September 2005
ER -