Broadband space-time wave packets propagating 70 m

Abstract

The propagation distance of a pulsed beam in free space is ultimately limited by diffraction and space-time coupling. "Space-time" (ST) wave packets are pulsed beams endowed with tight spatio-temporal spectral correlations that render them propagation-invariant. Here we explore the limits of the propagation distance for ST wave packets. Making use of a specially designed phase plate inscribed by gray-scale lithography, we synthesize an ST light sheet of width $\approx 700$~$\mu$m and bandwidth $\sim 20$~nm and confirm a propagation distance of $\approx 70$~m.

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Cited by in corpus (21)

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• Hybrid guided space-time optical modes in unpatterned films
• Free-space optical delay line using space-time wave packets
• V-Waves: Spatio-temporally induced group-velocity dispersion in free space
• Focused fields of ultrashort radially-polarized laser pulses having low-order spatio-temporal couplings
• Axial spectral encoding of space-time wave packets
• Temporal Talbot effect in free space
• Observation of ultrabroadband striped space-time surface plasmon polaritons
• Refraction of space-time wave packets: I. Theoretical principles
• Refraction of space-time wave packets in a dispersive medium
• Spectrally recycling space-time wave packets
• Exciting space-time surface plasmon polaritons by irradiating a nanoslit structure
• Realizing normal group-velocity dispersion in free space via angular dispersion
• Refraction of space-time wave packets: III. Experiments at oblique incidence
• Excitation of Surface Plasmon Polaritons by Diffraction-Free and Vector Beams
• Refraction of space-time wave packets: II. Experiments at normal incidence
• Space-time wave packets violate the universal relationship between angular dispersion and pulse-front tilt