Open AccessTailoring optical orbital angular momentum spectrum with spiral complex field modulation
Author(s) -
Chenhao Wan,
Jian Chen,
Qiwen Zhan
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.015108
Subject(s) - optics , physics , angular momentum , phase modulation , modulation (music) , spiral (railway) , polarization (electrochemistry) , optical vortex , angular spectrum method , beam (structure) , phase noise , diffraction , mathematical analysis , chemistry , mathematics , quantum mechanics , acoustics
We report the generation of prescribed optical orbital angular momentum (OAM) spectrum with spiral complex field modulation. Both symmetric and asymmetric OAM spectrums are generated with a vector beam generator and measured with a hybrid conformal mapper. Three methods for OAM spectrum generation ranging from the pure spiral phase modulation, the spiral amplitude and phase modulation, to the spiral phase and polarization modulation are demonstrated. The OAM spectrum generation with spiral complex field modulation may find applications in optical trapping and high-speed data communication.