Detection of Nonlinearity in Photonic Lattices

被引:1
|
作者
Jia, Pengbo [1 ,2 ,3 ]
Li, Zhaochen [1 ]
Xia, Shiqiang [1 ]
Bongiovanni, Domenico [2 ,3 ,4 ]
Tang, Liqin [2 ,3 ]
Qi, Wenrong [1 ]
Zhang, Yingying [1 ]
Zhao, Xingdong [1 ]
Su, Keyu [1 ]
Zhu, Zunlue [1 ]
Hu, Yi [2 ,3 ]
机构
[1] Henan Normal Univ, Sch Phys, Xinxiang 453007, Henan, Peoples R China
[2] Nankai Univ, TEDA Appl Inst, MOE Key Lab Weak Light Nonlinear Photon, Tianjin 300457, Peoples R China
[3] Nankai Univ, Sch Phys, Tianjin 300457, Peoples R China
[4] INRS EMT, 1650 Blvd Lionel Boulet, Varennes, PQ J3X 1S2, Canada
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
nonlinearity; photonic lattices; self-accelerating beams; DISCRETE SOLITONS; GENERATION; LIGHT; BEAMS;
D O I
10.1002/lpor.202400937
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Although periodic photonic structures, especially associated with nonlinearity, play a prominent role in optics nowadays, effective detection of their nonlinearity still remains a critical challenge. Here, an approach is proposed to detect the nonlinearity of photonic lattices in a direct way. By properly launching structured beams, namely Airy beams, into the lattices, the nonlinear response function of the discrete system can be directly obtained in the nonlinearly-shaped beam profiles. To be specific, a single Airy beam is utilized to map self-defocusing nonlinearity, while self-focusing nonlinearity, which is hard to visualize in the bulk case, is readily discerned by employing double Airy beams in photonic structures. The proposed method is validated numerically and experimentally by detecting different types of nonlinearities of photonic lattices fabricated in a nonlinear crystal. These findings introduce a promising route for characterizing the nonlinear response of optical structures, thereby broadening the scope of nonlinear measurement and is expected to be extended into other periodic photonic structures.
引用
收藏
页数:6
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