https://doi.org/10.1051/epjconf/202226608017
Demonstration of propagation-invariant 3D space-time wave packets
1 CREOL, The College of Optics & Photonics, University of Central Florida, Orlando, Florida 32816, USA
2 Micro-Photonics Laboratory, the Holcombe Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina 29634, USA
3 James Watt School of Engineering, University of Glasgow, UK
4 CNRS, Centrale Marseille, Institut Fresnel, Aix Marseille Univ., Marseille, France
5 The Institute of Optics, University of Rochester, Rochester, NY, USA
* e-mail: yessenov@knights.ucf.edu
Published online: 13 October 2022
We present the first demonstration of propagation-invariant space-time (ST) wave packets localized in all dimensions - 2D space and 1D time. By introducing orbital-angular-momentum into the wave packets, we produce propagation-invariant ST-OAM wave packets traveling at arbitrary group velocities. Our results show 4× improvement in propagation distance of 3D ST wave packets compared with a separable Bessel beam having similar spatial bandwidth.
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