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タイトル
  • en Frequency-resolved measurement of the orbital angular momentum spectrum of femtosecond ultra-broadband optical-vortex pulses based on field reconstruction
作成者
アクセス権 open access
権利情報
主題
  • NDC 425
内容注記
  • Abstract en We propose a high-precision method for measuring the orbital angular momentum (OAM) spectrum of ultra-broadband optical-vortex (OV) pulses from fork-like interferograms between OV pulses and a reference plane-wave pulse. It is based on spatial reconstruction of the electric fields of the pulses to be measured from the frequency-resolved interference pattern. Our method is demonstrated experimentally by obtaining the OAM spectra for different spectral components of the OV pulses, enabling us to characterize the frequency dispersion of the topological charge of the OAM spectrum by a simple experimental setup. Retrieval is carried out in quasi-real time, allowing us to investigate OAM spectra dynamically. Furthermore, we determine the relative phases (including the sign) of the topological-charge-resolved electric-field amplitudes, which are significant for evaluating OVs or OV pulses with arbitrarily superposed modes.
出版者 en Institute of Physics
日付
    Issued2014-05
言語
  • eng
資源タイプ journal article
出版タイプ VoR
資源識別子 HDL http://hdl.handle.net/2115/55297
関連
  • isIdenticalTo DOI https://doi.org/10.1088/1367-2630/16/5/053020
収録誌情報
    • EISSN 1367-2630
      • en New Journal of Physics
      • 16 5 開始ページ053020
ファイル
コンテンツ更新日時 2023-07-26