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Qiwen Zhan
Researcher at University of Shanghai for Science and Technology
Publications - 390
Citations - 11203
Qiwen Zhan is an academic researcher from University of Shanghai for Science and Technology. The author has contributed to research in topics: Polarization (waves) & Fiber laser. The author has an hindex of 40, co-authored 336 publications receiving 9107 citations. Previous affiliations of Qiwen Zhan include Quanzhou Normal University & Wright-Patterson Air Force Base.
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Bi 2 Te 3 based passively Q-switched fiber laser with cylindrical vector beam emission.
TL;DR: A passively Q-switched fiber laser with cylindrical vector beam output modes using a few-mode fiber Bragg grating as a polarization-selective output coupler and Bi2Te3 as the saturable absorber is reported.
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Compact and high-resolution optical orbital angular momentum sorter
TL;DR: In this article, a compact and high-resolution optical orbital angular momentum (OAM) sorter is proposed and demonstrated, which comprises a quadratic fan-out mapper and a dual-phase corrector positioned in the pupil plane and the Fourier plane, respectively.
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Tungsten disulphide based all fiber Q-switching cylindrical-vector beam generation
TL;DR: In this article, an all fiber passively Q-switching laser was used to generate cylindrical vector beam, a two dimensional material, tungsten disulphide (WS2), was adopted as a saturable absorber inside the laser cavity, while a fewmode fiber Bragg grating was used as a transverse mode-selective output coupler.
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Detecting orbital angular momentum through division-of-amplitude interference with a circular plasmonic lens
Aiping Liu,Xiao Xiong,Xi-Feng Ren,Yong-Jing Cai,Guanghao Rui,Qiwen Zhan,Guang-Can Guo,Guo-Ping Guo +7 more
TL;DR: In this paper, a novel detection scheme for the orbital angular momentum (OAM) of light using circular plasmonic lens is presented, which is validated experimentally and numerically.
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Circularly polarized unidirectional emission via a coupled plasmonic spiral antenna.
TL;DR: The emission properties of an electric dipole emitter coupled to a plasmonic spiral structure, which functions as an optical antenna, are studied, finding that increasing number of turns of the spiral leads to narrower angular width of the emission pattern in the far field.