Three-Wave Mixing of Dipole Solitons in One-Dimensional Quasi-Phase-Matched Nonlinear Crystals  

作　　者：郭宇欣 徐晓喜 陈招拼 周延桂 刘彬 和河向 黎永耀 谢嘉宁 Yuxin Guo;Xiaoxi Xu;Zhaopin Chen;Yangui Zhou;Bin Liu;Hexiang He;Yongyao Li;Jianing Xie(School of Physics and Optoelectronic Engineering,Foshan University,Foshan 528000,China;Physics Department and Solid-State Institute,Technion,Haifa 32000,Israel;Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology)

机构地区：[1]School of Physics and Optoelectronic Engineering,Foshan University,Foshan 528000,China [2]Physics Department and Solid-State Institute,Technion,Haifa 32000,Israel [3]Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology,School of Physics and Optoelectronic Engineering,Foshan University,Foshan 528000,China

出　　处：《Chinese Physics Letters》2024年第1期25-33,共9页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12274077 and 11874112);the Research Fund of the Guangdong Hong Kong Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology(Grant No.2020B1212030010);the Graduate Innovative Talents Training Program of Foshan University.

摘　　要：A quasi-phase-matched technique is introduced for soliton transmission in a quadratic[χ^((2))]nonlinear crystal to realize the stable transmission of dipole solitons in a one-dimensional space under three-wave mixing.We report four types of solitons as dipole solitons with distances between their bimodal peaks that can be laid out in different stripes.We study three cases of these solitons:spaced three stripes apart,one stripe apart,and confined to the same stripe.For the case of three stripes apart,all four types have stable results,but for the case of one stripe apart,stable solutions can only be found atω_(1)=ω_(2),and for the condition of dipole solitons confined to one stripe,stable solutions exist only for Type1 and Type3 atω_(1)=ω_(2).The stability of the soliton solution is solved and verified using the imaginary time propagation method and real-time transfer propagation,and soliton solutions are shown to exist in the multistability case.In addition,the relations of the transportation characteristics of the dipole soliton and the modulation parameters are numerically investigated.Finally,possible approaches for the experimental realization of the solitons are outlined.

关 键 词：SOLITON SOLITONS DIPOLE 

分 类 号：O73[理学—晶体学] TN773[电子电信—电路与系统]