PhotoniX, Volume. 5, Issue 1, 36(2024)

Pulsed polarized vortex beam enabled by metafiber lasers

Chenxi Zhang1、†, Lei Zhang2,3,4、†, He Zhang1, Bo Fu1,5、*, Jiyong Wang6、**, and Min Qiu2,3,7、***
Author Affiliations
  • 1Key Laboratory of Precision Opto-Mechatronics Technology of Education Ministry, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
  • 2Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province, China
  • 3Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province, China
  • 4QianYuan National Laboratory, Hangzhou, 310000, China
  • 5Key Laboratory of Big Data-Based Precision Medicine Ministry of Industry and Information Technology, School of Engineering Medicine, Beihang University, Beijing 100191, China
  • 6Ministry of Education Engineering Research Center of Smart Microsensors and Microsystems, School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China
  • 7Westlake Institute for Optoelectronics, Fuyang, Hangzhou 311421, China
  • show less

    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.

    Tools

    Get Citation

    Copy Citation Text

    Chenxi Zhang, Lei Zhang, He Zhang, Bo Fu, Jiyong Wang, Min Qiu. Pulsed polarized vortex beam enabled by metafiber lasers[J]. PhotoniX, 2024, 5(1): 36

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Research Articles

    Received: Aug. 21, 2024

    Accepted: Oct. 25, 2024

    Published Online: Jan. 23, 2025

    The Author Email: Fu Bo (fubo10@buaa.edu.cn), Wang Jiyong (jiyongwang@hdu.edu.cn), Qiu Min (qiumin@westlake.edu.cn)

    DOI:10.1186/s43074-024-00151-6

    Topics