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spatiotemporal optical vortex wavepackets with phase singularities embedded in multiple domains[Invited]

中国光学快报:英文版 2023年第8期21卷 6-11页

作者：顾亮亮曹前詹其文 School of optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China Zhangjiang Laboratory Shanghai 201204China

spatiotemporal optical vortex(STOV)wavepacket carrying transverse photonic orbital angular momentum(OAM)has been extensively studied in the past few *** this Letter,we propose and study a novel STOV wavepacket with multiple phase singularities embedded in different space–time domains using analytical and numerical *** tuning different parameters used for designing the wavepacket,it is possible to engineer both the magnitude and orientation of the photonic OAM in space–*** vectorially controllable OAM will pave new avenues and facilitate applications such as novel optical communication,studying complicated quantum systems,and spin-and-OAM interactions.

关键词： spatiotemporal optical vortices photonic orbital angular momentum ultrafast optics

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Propagation of transverse photonic orbital angular momentum through few-mode fiber

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Advanced Photonics 2023年第3期5卷 101-107页

作者： Qian Cao Zhuo Chen Chong Zhang Andy Chong Qiwen Zhan University of Shanghai for Science and Technology School of Optical-Electrical and Computer EngineeringShanghaiChina Zhangjiang Laboratory ShanghaiChina University of Shanghai for Science and Technology Shanghai Key Laboratory of Modern Optical SystemShanghaiChina Pusan National University Department of PhysicsBusanRepublic of Korea

spatiotemporal optical vortex(STOV)pulses can carry transverse orbital angular momentum(OAM)that is perpendicular to the direction of pulse *** a STOV pulse,its spatiotemporal profile can be significantly distorted due to unbalanced dispersive and diffractive *** may limit its use in many research applications,where a long interaction length and a tight confinement of the pulse are *** first demonstration of STOV pulse propagation through a few-mode optical fiber is *** numerical and experimental analysis on the propagation of STOV pulse through a commercially available SMF-28 standard telecommunication fiber is *** spatiotemporal phase feature of the pulse can be well kept after the pulse propagates a few-meter length through the fiber even with *** propagation of the pulse will result in a breakup of its spatiotemporal spiral phase structure due to an excessive amount of modal group delay *** stable and robust transmission of transverse photonic OAM through optical fiber may open new opportunities for transverse photonic OAM studies in telecommunications,OAM lasers,and nonlinear fiber-optical research.

关键词： photonic orbital angular momentum spatiotemporal optical vortices multimode fiber

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