Structuring light beams via nonlinear diffraction in 3D nonlinear photonic crystal

被引：4

作者：

Wang, Ningning ^{[1
,2
]}

Liu, Shan ^{[3
]}

Xu, Tianxiang ^{[1
,2
]}

Zhao, Ruwei ^{[1
,2
]}

Xu, Tiefeng ^{[1
,2
,4
]}

Krolikowski, Wieslaw ^{[3
,5
]}

Sheng, Yan ^{[1
,2
,3
]}

机构：

[1] Ningbo Univ, Res Inst Adv Technol, Lab Infrared Mat & Devices, Ningbo 315211, Zhejiang, Peoples R China

[2] Key Lab Photoelect Detect Mat & Devices Zhejiang P, Ningbo 315211, Peoples R China

[3] Australian Natl Univ, Res Sch Phys, Dept Quantum Sci & Technol, Canberra, ACT 2601, Australia

[4] Ningbo Inst Oceanog, Ningbo 315832, Peoples R China

[5] Texas A&M Univ Qatar, Div Arts & Sci, Doha, Qatar

来源：

OPTICS AND LASER TECHNOLOGY | 2024年 / 168卷

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

LITHIUM-NIOBATE; 2ND-HARMONIC GENERATION;

D O I：

10.1016/j.optlastec.2023.109994

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that nonlinear diffraction in nonlinear photonic crystal offers a convenient way to generate structured light at new frequencies. To this end we fabricate a 3D nonlinear photonic crystal containing two layers of fork-shaped ferroelectric domain gratings. Illumination of the structure by a fundamental Gaussian beam leads to the generation of two co-propagating second harmonic vortices with opposite topological charges, whose subsequent interference forms Hermite-Gaussian (HG) beams in far field.

引用

页数：5

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