Vortex solitons in the semi-infinite gap of optically induced periodic lattices

Vortex solitons in the semi-infinite gap of optically

induced periodic lattices

Wang Jian-Dong;Ji Hong;Liu Pu-Sheng

【期刊名称】《中国物理：英文版》 【年(卷),期】2013(022)004

【摘要】Vortex solitons with a ring vortex core residing in a single lattice site in the semi-infinite gap of square optical lattices are reported.These solitons are no longer bound states of the Bloch-wave unit (Bloch-wave distribution in one lattice site) at the band edge of the periodic lattice,and consequently they do not bifurcate from the corresponding band edge.For saturable nonlinearity,one family of such solitons is found,and its existing curve forms a closed loop,which is very surprising.For Kerr nonlinearity,two families of such vortex solitons are found.

【总页数】6页(286-291) 【关键词】

【作者】Wang Jian-Dong;Ji Hong;Liu Pu-Sheng

【作者单位】School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China 【正文语种】英文 【中图分类】 【相关文献】