Abstract

Self-imaging of ultrashort-pulsed nondiffracting needle beams, i.e., fringe-free Bessel beams, is analyzed. In contrast to the classical diffractive Talbot effect, pulse revivals with minimum spectral and temporal distortion are obtained. Robustness is further enhanced by self-reconstruction. The high-fidelity pulse transfer enables spatial and temporal multiplexing in free space without the need for a nonlinear medium, even at pulse durations down to the few-cycle range.

© 2017 Optical Society of America

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Supplementary Material (1)

NameDescription
Visualization 1: AVI (1374 KB)      Intensity propagation of a nondiffracting needle beam array consisting of 840 sub-beams generated from sub-3-cylce pulses of a Ti:sapphire laser oscillator.

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