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Beaming random lasers with soliton control

Author

Listed:
  • Sreekanth Perumbilavil

    (Tampere University of Technology)

  • Armando Piccardi

    (NooEL—Nonlinear Optics and OptoElectronics Lab, University ”Roma Tre”)

  • Raouf Barboza

    (Tampere University of Technology)

  • Oleksandr Buchnev

    (University of Southampton)

  • Martti Kauranen

    (Tampere University of Technology)

  • Giuseppe Strangi

    (Case Western Reserve University
    CNR-NANOTEC & University of Calabria)

  • Gaetano Assanto

    (Tampere University of Technology
    NooEL—Nonlinear Optics and OptoElectronics Lab, University ”Roma Tre”
    CNR-ISC)

Abstract

Random lasers are resonator-less light sources where feedback stems from recurrent scattering at the expense of spatial profile and directionality. Suitably-doped nematic liquid crystals can random lase when optically pumped near resonance(s); moreover, through molecular reorientation within the transparency region, they support self-guided optical spatial solitons, i.e., light-induced waveguides. Here, we synergistically combine solitons and collinear pumping in weakly scattering dye-doped nematic liquid crystals, whereby random lasing and self-confinement concur to beaming the emission, with several improved features: all-optical switching driven by a low-power input, laser directionality and smooth output profile with high-conversion efficiency, externally controlled angular steering. Such effects make soliton-assisted random lasers an outstanding route towards application-oriented random lasers.

Suggested Citation

  • Sreekanth Perumbilavil & Armando Piccardi & Raouf Barboza & Oleksandr Buchnev & Martti Kauranen & Giuseppe Strangi & Gaetano Assanto, 2018. "Beaming random lasers with soliton control," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06170-9
    DOI: 10.1038/s41467-018-06170-9
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    Cited by:

    1. Ke-Hui Wu & Li-Ting Zhu & Fang-Fang Xiao & Xuejia Hu & Sen-Sen Li & Lu-Jian Chen, 2024. "Light-regulated soliton dynamics in liquid crystals," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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