Nonlinear generation of an optical bottle beam in domain-engineered ferroelectric crystals

被引：12

作者：

Hu, Xiaokang ^{[1
,2
]}

Liu, Shan ^{[3
,4
]}

Xu, Tianxiang ^{[1
,2
]}

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

Zhao, Ruwei ^{[1
,2
]}

Krolikowski, Wieslaw ^{[3
]}

机构：

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

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

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

[4] Australian Natl Univ, Res Sch Phys, Dept Elect Mat Engn, Canberra, ACT 2601, Australia

来源：

OPTICS LETTERS | 2023年 / 48卷 / 21期

基金：

中国国家自然科学基金;

关键词：

MANIPULATION; INTENSITY; ATOM;

D O I：

10.1364/OL.501932

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nonlinear wavefront shaping in periodically poled ferroelec-tric crystals has received great attention because it offers a convenient way to generate a structured light beam at new frequencies. In contrast to structurally uniform beams like Laguerre-Gaussian or Hermite-Gaussian modes, here we demonstrate the possibility to generate a spatially var-ied optical bottle beam via a frequency doubling process in a domain-engineered Sr0.61Ba0.39Nb2O6 (SBN) crystal. The nonlinear holography method was employed to design the modulation pattern of the second-order nonlinear coefficient chi(2), and the femtosecond laser poling was used to imprint the chi(2) pattern into the SBN crystal via ferroelectric domain inversion. The second harmonic bottle beam with zero inten-sity in its center that is surrounded in all three dimensions by light was observed with the incidence of a fundamental Gaussian beam. These results are useful for nonlinear gen-eration and control of structured light at new frequencies, which has important applications in nonlinear photonics and quantum optics. (c) 2023 Optica Publishing Group

引用

页码：5527 / 5530

页数：4

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