TY - JOUR
T1 - Bulk vortices and half-vortex surface modes in parity-time-symmetric media
AU - Li, Huagang
AU - Zhu, Xing
AU - Shi, Zhiwei
AU - Malomed, Boris A.
AU - Lai, Tianshu
AU - Lee, Chaohong
PY - 2014/5/9
Y1 - 2014/5/9
N2 - We demonstrate that in-bulk vortex localized modes and their surface half-vortex ("horseshoe") counterparts self-trap in two-dimensional nonlinear optical systems with PT-symmetric photonic lattices (PLs). The respective stability regions are identified in the underlying parameter space. The in-bulk states are related to truncated nonlinear Bloch waves in gaps of the PL-induced spectrum. The basic vortex and horseshoe modes are built, severally, of four and three beams with appropriate phase shifts between them. Their stable complex counterparts, built of up to 12 beams, are also reported.
AB - We demonstrate that in-bulk vortex localized modes and their surface half-vortex ("horseshoe") counterparts self-trap in two-dimensional nonlinear optical systems with PT-symmetric photonic lattices (PLs). The respective stability regions are identified in the underlying parameter space. The in-bulk states are related to truncated nonlinear Bloch waves in gaps of the PL-induced spectrum. The basic vortex and horseshoe modes are built, severally, of four and three beams with appropriate phase shifts between them. Their stable complex counterparts, built of up to 12 beams, are also reported.
UR - http://www.scopus.com/inward/record.url?scp=84900453601&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.89.053811
DO - 10.1103/PhysRevA.89.053811
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AN - SCOPUS:84900453601
SN - 1050-2947
VL - 89
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 053811
ER -