Temporally and Longitudinally Tailored Dynamic Space-Time Wave Packets
Xinzhou Su, Kaiheng Zou, Huibin Zhou, Hao Song, Yingning Wang, Ruoyu, Zeng, Zile Jiang, Yuxiang Duan, Maxim Karpov, Tobias J. Kippenberg, Moshe, Tur, Demetrios N. Christodoulides, and Alan E. Willner

TL;DR
This paper introduces a new method for synthesizing space-time wave packets with arbitrarily engineered evolution along the propagation axis, enabling precise control over their spatiotemporal properties for advanced optical applications.
Contribution
The authors develop a versatile synthesis technique for space-time wave packets with tailored longitudinal evolution, incorporating a 2D spectrum and experimental demonstrations of dynamic orbital angular momentum.
Findings
Wave packets can be engineered to evolve at predesigned distances.
Spectral synthesis reduces deviation from desired properties.
Experimental control of time- and longitudinal-varying orbital angular momentum.
Abstract
In general, space-time wave packets with correlations between transverse spatial fields and temporal frequency spectra can lead to unique spatiotemporal dynamics, thus enabling control of the instantaneous light properties. However, spatiotemporal dynamics generated in previous approaches manifest themselves at a given propagation distance yet not arbitrarily tailored longitudinally. Here, we propose and demonstrate a new versatile class of judiciously synthesized wave packets whose spatiotemporal evolution can be arbitrarily engineered to take place at various predesigned distances along the longitudinal propagation path. Spatiotemporal synthesis is achieved by introducing a 2-dimensional spectrum comprising both temporal and longitudinal wavenumbers associated with specific transverse Bessel-Gaussian fields. The resulting spectra are then employed to produce wave packets evolving in…
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Taxonomy
TopicsOrbital Angular Momentum in Optics · Photonic and Optical Devices · Optical Coherence Tomography Applications
