title: Supercontinuum optical vortex pulse generation without spatial or topological-charge dispersion.
abstract: A new achromatic method to generate the optical vortex was proposed and supercontinuum optical vortex generation ranging approximately 500 to approximately 800 nm was experimentally demonstrated without spatial nor topological-charge dispersions. In addition, polarization evolution in our system using Jones vectors and matrices was discussed and the condition of the polarizer to transfer polarizations was elucidated. This method is useful for the application to time-resolved nonlinear spectroscopy utilizing ultrabroadband optical vortex pulses in topological materials such as ring-shaped crystals or annular materials.
authors.affiliation: Department of Applied Physics, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan. tokizane@eng.hokudai.ac.jp
authors.forename: Yu
authors.initials: Y
authors.lastname: Tokizane
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Oka
authors.forename: Ryuji
authors.initials: R
authors.lastname: Morita
mesh_terms: D000465:Algorithms; D004867:Equipment Design; D005336:Fiber Optic Technology; D007834:Lasers; D008859:Microscopy, Polarization / Q000379:methods; D016011:Normal Distribution; D055096:Optical Devices; D055100:Optical Fibers; D055095:Optics and Photonics; D012031:Refractometry