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タイトル
  • Frequency-resolved measurement of the orbital angular momentum spectrum of femtosecond ultra-broadband optical-vortex pulses based on field reconstruction
作成者

Yamane, Keisaku

Yang, Zhili

Toda, Yasunori

Morita, Ryuji

権利情報
    • http://creativecommons.org/licenses/by/3.0/
主題
  • NDC 425
内容注記
Other
  • 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Institute of Physics
日付 Issued 2014-05
言語eng
資源タイプjournal article
出版タイプVoR
資源識別子 URI 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
    • ISSN 1367-2630
    • New Journal of Physics
    16(5), 053020
ファイル
コンテンツ更新日時2017-10-15T15:00:00Z