Optical control of topological end states via soliton formation in a 1D lattice

被引:2
|
作者
Joerg, Christina [1 ,2 ,3 ]
Juergensen, Marius [1 ,4 ]
Mukherjee, Sebabrata [1 ,5 ]
Rechtsman, Mikael C. [1 ]
机构
[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[2] Univ Kaiserslautern Landau, Phys Dept, D-67663 Kaiserslautern, Germany
[3] Univ Kaiserslautern Landau, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany
[4] Stanford Univ, Dept Phys, Stanford, CA USA
[5] Indian Inst Sci, Dept Phys, Bangalore 560012, India
关键词
discrete spatial solitons; topological photonics; pump-probe; Kerr-nonlinearity; waveguide lattices;
D O I
10.1515/nanoph-2024-0401
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Discrete spatial solitons are self-consistent solutions of the discrete nonlinear Schr & ouml;dinger equation that maintain their shape during propagation. Here we show, using a pump-probe technique, that soliton formation can be used to optically induce and control a linear topological end state in the bulk of a Su-Schrieffer-Heeger lattice, using evanescently-coupled waveguide arrays. Specifically, we observe an abrupt nonlinearly-induced transition above a certain power threshold due to an inversion symmetry-breaking nonlinear bifurcation. Our results demonstrate all-optical active control of topological states.
引用
收藏
页码:769 / 775
页数:7
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