Optical Cherenkov radiation in an As2S3 slot waveguide with four zero-dispersion wavelengths

Shaofei Wang, Jungao Hu, Hairun Guo, Xianglong Zeng

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    We propose an approach for an efficient generation of optical Cherenkov radiation (OCR) in the near-infrared by tailoring the waveguide dispersion for a zero group-velocity mismatching between the radiation and the pump soliton. Based on an As2S3 slot waveguide with subwavelength dimensions, dispersion profiles with four zero dispersion wavelengths are found to produce a phase-matching nonlinear process leading to a broadband resonant radiation. The broadband OCR investigated in the chalcogenide waveguide may find applications in on-chip wavelength conversion and near-infrared pulse generation.
    Original languageEnglish
    JournalOptics Express
    Issue number3
    Pages (from-to)3067-3072
    Publication statusPublished - 2013

    Bibliographical note

    This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-3-3067. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


    • Dispersion (waves)
    • Dispersions
    • Infrared devices
    • Pulse generators
    • Radiation
    • Solitons
    • Waveguides


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