期刊
PHYSICS LETTERS A
卷 378, 期 41, 页码 3079-3083出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2014.09.005
关键词
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资金
- Guangdong Province Natural Science Foundation of China [S2013010012844]
- Guangdong Provincial Key Lab. of Petrochemical Equipment Fault Diagnosis Foundation of China [GDUPTKLAB201316]
- Maoming Natural Science Foundation of Guangdong, China [2014071]
- Doctor Foundation of Guangdong University of Petrochemical Technology, China [513073]
We investigate the optical properties with two-dimensional (2D) Scarff parity-time (PT) symmetric potentials, including linear case, and self-focusing and self-defocussing nonlinear cases. For linear case, the PT-breaking points, the eigenvalues and eigenfunction for different modulated depths of 2D Scarff PT symmetry complex potential are obtained numerically. The PT-breaking points increase linearly with increasing the real part of the modulated depths of PT potential. Below the PT-breaking points, the eigenvalues of linear modes are real, however, eigenvalues of linear modes are complex above the PT-breaking points. For nonlinear cases, the existence of fundamental and multipole solitons is studied in self-focusing and self-defocussing media. The eigenvalue for linear case is equal to the critical propagation constant b(c) of soliton existing. (C) 2014 Elsevier B.V. All rights reserved.
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