Sequential Three-Dimensional Nonlinear Photonic Structures for Efficient and Switchable Nonlinear Beam Shaping

被引：16

作者：

Wang, Chaowei ^{[3
,4
]}

Chen, Pengcheng ^{[1
,2
]}

Wei, Dunzhao ^{[5
]}

Zhang, Leran ^{[3
,4
]}

Zhang, Zihang ^{[3
,4
]}

Xu, Liqun ^{[3
,4
]}

Hu, Yanlei ^{[3
,4
]}

Li, Jiawen ^{[3
,4
]}

Zhang, Yong ^{[1
,2
]}

Xiao, Min ^{[1
,2
,6
]}

Chu, Jiaru ^{[3
,4
]}

Wu, Dong ^{[3
,4
]}

机构：

[1] Nanjing Univ, Coll Engn & Appl Sci, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

[3] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[4] Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, CAS Key Lab Mech Behav & Design Mat, Hefei 230026, Peoples R China

[5] Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[6] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

来源：

ACS PHOTONICS | 2023年 / 10卷 / 02期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

femtosecond laser writing; switchable nonlinear beam shaping; quasi-phase-matching; wavelength-multiplexed technique; 2ND-HARMONIC GENERATION; LITHIUM-NIOBATE; LIGHT; CRYSTAL;

D O I：

10.1021/acsphotonics.2c01562

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nonlinear beam shaping can be dynamically controlled by temperature or polarization to form switchable nonlinear structured beams, which constitute an unprecedented system for realizing optical encryption at new frequencies and high-dimensional nonclassical light sources. However, previous works were limited by a trade-off between the conversion efficiency and the modulation dimension of the beam. It is still technologically challenging to achieve efficient and switchable multidimensional nonlinear beam shaping. Here, we demonstrate switchable generation of nonlinear structured beams via three-dimensional (3D) nonlinear photonic crystals (NPCs) fabricated by femtosecond laser writing technique with considerable conversion efficiency. The 3D NPCs contain different sequential 3D arrays of spatially modulated chi(2) nonlinearity designed by computer-generated hologram (CGH) along the optical y-axis (LiNbO3 crystal). The output direction of the nonlinear beams can be changed by the carrier frequencies, while their efficiencies can be increased by the quasi-phase matching condition.

引用

页码：456 / 463

页数：8

共 48 条

[1] Nonlinear metamaterials for holography [J].