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Published in 2023 at "Photonics"
DOI: 10.3390/photonics10050577
Abstract: A controllable helico-conical beam is proposed in this paper. The intensity patterns and the local spatial frequency of the controllable helico-conical beams in the focal region are analyzed in detail. The results show that the…
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Keywords:
controllable helico;
beam generated;
conical beam;
helico conical ... See more keywords