• Photonics Research
  • Vol. 11, Issue 2, 181 (2023)
Kunhao Ji1, Di Lin1、2、3、*, Ian A. Davidson1, Siyi Wang1, Joel Carpenter4, Yoshimichi Amma5, Yongmin Jung1, Massimiliano Guasoni1, and David J. Richardson1
Author Affiliations
  • 1Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK
  • 2Current address: Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • 3Current address: Guangdong Provincial Key Laboratory of Photonics Information Technology, Guangdong University of Technology, Guangzhou 510006, China
  • 4School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
  • 5Fujikura Ltd., Chiba 285-8550, Japan
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    DOI: 10.1364/PRJ.475287 Cite this Article Set citation alerts
    Kunhao Ji, Di Lin, Ian A. Davidson, Siyi Wang, Joel Carpenter, Yoshimichi Amma, Yongmin Jung, Massimiliano Guasoni, David J. Richardson. Controlled generation of picosecond-pulsed higher-order Poincaré sphere beams from an ytterbium-doped multicore fiber amplifier[J]. Photonics Research, 2023, 11(2): 181 Copy Citation Text show less

    Abstract

    Higher-order Poincaré sphere (HOPS) beams with spatially variable polarization and phase distributions are opening up a host of unique applications in areas ranging from optical communication to microscopy. However, the flexible generation of these beams with high peak power from compact laser systems remains a challenge. Here, we demonstrate the controlled generation of HOPS beams based on coherent beam combination from an Yb-doped multicore fiber (MCF) amplifier. Using a spatial light modulator to adaptively adjust the wavefront and polarization of the signals seeded into the individual cores of the MCF various structured beams (including cylindrical vector beams and first- and second-order vortex beams) were generated with peak powers up to 14 kW for 92 ps pulses.
    EOUT=UQWP(β)UQP(γ,)EHOPS(γ,β,)=cos  2β|H+sin2β|V,

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    EHOPS=cos(π4+β)exp[i(γβ)]exp(i||φ)|L+sin(π4+β)exp[i(γβ)]exp(i||φ)|R,

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    Kunhao Ji, Di Lin, Ian A. Davidson, Siyi Wang, Joel Carpenter, Yoshimichi Amma, Yongmin Jung, Massimiliano Guasoni, David J. Richardson. Controlled generation of picosecond-pulsed higher-order Poincaré sphere beams from an ytterbium-doped multicore fiber amplifier[J]. Photonics Research, 2023, 11(2): 181
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