期刊论文

Yang, Zhenjun

英文

LASER PHYSICS

1054-660X

2015

25

2

025401

10.1088/1054-660X/25/2/025401

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [61308016, 11374089, 11347121, 11304077]; Natural Science Foundation of Hebei ProvinceNatural Science Foundation of Hebei Province [A2012205023, F2012205076, A2012205085]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2014M551041]; Research Foundation of Education Bureau of Hebei Province [ZH2011107, ZD20131014]; Natural Science Foundation of Hebei Normal University [L2011B06]

本校为第一机构

We investigate here a new class of optical beams: modified hollow Gaussian beams (MHGBs) in strongly nonlocal nonlinear media (SNNM). A set of analytical expressions for the propagation properties is deduced and some numerical simulations are also carried out to illustrate the propagation properties. It is found that the evolution of the MHGBs in SNNM is periodical, which is the result of the competition between nonlinearity and diffraction. The second-order moment beam width of the MHGBs can keep invariant during propagation like a soliton when the input power equals the critical power, other...