TY - JOUR
T1 - Experiments on Gaussian beams and vortices in optically induced photonic lattices
AU - Chen, Zhigang
AU - Martin, Hector
AU - Bezryadina, Anna
AU - Neshev, Dragomir
AU - Kivshar, Yuri S.
AU - Christodoulides, Demetrios N.
PY - 2005/7
Y1 - 2005/7
N2 - We investigate experimentally the propagation of fundamental Gaussian beams and vortices in a two-dimensional photonic lattice optically induced with partially coherent light. We focus on soliton-lattice interactions and vortex-lattice interactions when the lattice is operated in a nonlinear regime. In this case a host of novel phenomena is demonstrated, including soliton-induced lattice dislocation-deformation, soliton hopping and slow-down, and creation of structures akin to optical polarons. In addition, we observe that the nonlinear interaction between a vortex beam and a solitonic lattice leads to lattice twisting due to a transfer of the angular momentum carried by the vortex beam to the lattice. Results demonstrating a clear transition from discrete diffraction to the formation of two-dimensional, discrete fundamental and vortex solitons in a linear lattice are also included.
AB - We investigate experimentally the propagation of fundamental Gaussian beams and vortices in a two-dimensional photonic lattice optically induced with partially coherent light. We focus on soliton-lattice interactions and vortex-lattice interactions when the lattice is operated in a nonlinear regime. In this case a host of novel phenomena is demonstrated, including soliton-induced lattice dislocation-deformation, soliton hopping and slow-down, and creation of structures akin to optical polarons. In addition, we observe that the nonlinear interaction between a vortex beam and a solitonic lattice leads to lattice twisting due to a transfer of the angular momentum carried by the vortex beam to the lattice. Results demonstrating a clear transition from discrete diffraction to the formation of two-dimensional, discrete fundamental and vortex solitons in a linear lattice are also included.
UR - http://www.scopus.com/inward/record.url?scp=22944483746&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.22.001395
DO - 10.1364/JOSAB.22.001395
M3 - Article
SN - 0740-3224
VL - 22
SP - 1395
EP - 1405
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 7
ER -