title: Optical Cherenkov radiation in an As2S3 slot waveguide with four zero-dispersion wavelengths.
abstract: 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 As(2)S(3) 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.
authors.affiliation: The Key Lab of Specialty Fiber Optics and Optical Access Network, Shanghai University, 200072 Shanghai, China.
authors.forename: Shaofei
authors.initials: S
authors.lastname: Wang
authors.forename: Jungao
authors.initials: J
authors.lastname: Hu
authors.forename: Hairun
authors.initials: H
authors.lastname: Guo
authors.forename: Xianglong
authors.initials: X
authors.lastname: Zeng
mesh_terms: D001152:Arsenicals / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D013440:Sulfides / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D001152:Arsenicals; D013440:Sulfides; C045816:arsenic trisulfide