Pulsed polarized vortex beam enabled by metafiber lasers

Chenxi Zhang; Lei Zhang; He Zhang; Bo Fu; Jiyong Wang; Min Qiu

doi:10.1186/s43074-024-00151-6

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Chenxi Zhang, Lei Zhang, He Zhang, Bo Fu, Jiyong Wang, Min Qiu. Pulsed polarized vortex beam enabled by metafiber lasers[J]. PhotoniX. doi: 10.1186/s43074-024-00151-6

Citation:

Chenxi Zhang, Lei Zhang, He Zhang, Bo Fu, Jiyong Wang, Min Qiu. Pulsed polarized vortex beam enabled by metafiber lasers[J]. PhotoniX. doi: 10.1186/s43074-024-00151-6

Chenxi Zhang, Lei Zhang, He Zhang, Bo Fu, Jiyong Wang, Min Qiu. Pulsed polarized vortex beam enabled by metafiber lasers[J]. PhotoniX. doi: 10.1186/s43074-024-00151-6

Citation:

Chenxi Zhang, Lei Zhang, He Zhang, Bo Fu, Jiyong Wang, Min Qiu. Pulsed polarized vortex beam enabled by metafiber lasers[J]. PhotoniX. doi: 10.1186/s43074-024-00151-6

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Pulsed polarized vortex beam enabled by metafiber lasers

doi: 10.1186/s43074-024-00151-6

Chenxi Zhang¹,
Lei Zhang^{2, 3, 4},
He Zhang¹,
Bo Fu^{1, 5},
Jiyong Wang⁶,
Min Qiu^{2, 3, 7}

1.
Key Laboratory of Precision Opto-Mechatronics Technology of Education Ministry, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, 100191, China
2.
Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
3.
Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
4.
QianYuan National Laboratory, Hangzhou, 310000, China
5.
Key Laboratory of Big Data-Based Precision Medicine Ministry of Industry and Information Technology, School of Engineering Medicine, Beihang University, Beijing, 100191, China
6.
Ministry of Education Engineering Research Center of Smart Microsensors and Microsystems, School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, 310018, China
7.
Westlake Institute for Optoelectronics, Fuyang, Hangzhou, 311421, China

Funds: We thank Westlake Center for Micro/Nano Fabrication for the facility support and technical assistance.

Received Date: 2024-08-21
Accepted Date: 2024-10-25
Rev Recd Date: 2024-10-20

Available Online: 2024-11-04

Abstract

Abstract

Pulsed polarized vortex beams, a special form of structured light, are generated by tailoring the light beam spatiotemporally and witness the growing application demands in nonlinear optics such as ultrafast laser processing and surface plasma excitation. However, existing techniques for generating polarized vortex beams suffer from either low compactness due to the use of bulky components or limited controlment of pulse performance. Here, an all-fiber technique combining plasmonic metafibers with mode conversion method is harnessed to generate high-performance pulsed polarized vortex beams. Plasmonic metafibers are utilized as saturable absorbers to produce Q-switched pulses with micro-second duration, while the offset splicing method is employed to partially convert the fundamental transverse mode (LP$ _{01} $) to higher-order mode (LP$ _{11} $). Eventually, a polarized vortex beams laser is achieved at the telecom band with a repetition frequency of 116.0 kHz. The impact of geometrical parameters including period of metafibers and offset of splicing on the spatiotemporal properties of pulsed polarized vortex beams is systematically investigated. Our findings could pave the way for design, control and generation of all-fiber pulsed polarized vortex beams, and also offer insights into the development of other types of structured laser sources.
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References(52)

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