Longitudinally-structured light fields for sensing and dynamic behavior

Alan E. Willner

doi:10.1117/12.3011735

13 March 2024 Longitudinally-structured light fields for sensing and dynamic behavior

Alan E. Willner

Proceedings Volume PC12912, Quantum Sensing, Imaging, and Precision Metrology II; PC129121T (2024) https://doi.org/10.1117/12.3011735
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

A beam’s spatial distribution can be structured in terms of its amplitude and phase, and the transverse and longitudinal distribution can be tailored by an appropriate transmission of modes. This presentation will highlight longitudinally-structured light fields. (a) Sensing: To mitigate atmospheric turbulence effects, knowledge of turbulence strength at various distances could be valuable. One approach for probing utilizes multiple sequentially transmitted longitudinally structured beams, each on the same wavelength. Each beam is composed of Bessel-Gaussian modes with different longitudinal wavenumbers such that a distance-varying beam width is produced, which results in a distance- and turbulence-dependent power coupling to other spatial modes. (b) Dynamic Behavior: Space-time wave packets (STWPs) can have spatiotemporal evolution that is arbitrarily engineered to occur at various distances along the longitudinal propagation path. This can be achieved by introducing a 2-D spectrum comprising both temporal and longitudinal wavenumbers associated with specific transverse Bessel-Gaussian fields, resulting in packets evolving in time and distance.

Conference Presentation

Citation Download Citation

Alan E. Willner "Longitudinally-structured light fields for sensing and dynamic behavior", Proc. SPIE PC12912, Quantum Sensing, Imaging, and Precision Metrology II, PC129121T (13 March 2024); https://doi.org/10.1117/12.3011735

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