Chirped optical X-shaped pulses in material media

Abstract

In this paper we analyze the properties of chirped optical X-shaped pulses propagating in material media without boundaries. We show that such ("superluminal") pulses may recover their transverse and longitudinal shape after some propagation distance, while the ordinary chirped gaussian-pulses can recover their longitudinal shape only (since gaussian pulses suffer a progressive spreading during their propagation). We therefore propose the use of chirped optical X-type pulses to overcome the problems of both dispersion and diffraction during the pulse propagation.

Replaced with a much larger and deepened version (the number of pages going on from 4 to 24; plus 4 Figures added)

References in corpus (5)

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• On the Localized superluminal Solutions to the Maxwell Equations
• Superluminal Localized Solutions to the wave equation, in (vacuum or) dispersive media, for arbitrary frequencies and with adjustable bandwidth
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• Diffraction-Attenuation Resistant Beams: their Higher Order Versions and Finite-Aperture Generations
• Unidirectional decomposition method for obtaining exact localized waves solutions totally free of backward components
• Localized Waves: A not-so-short Review
• Analytical expressions for the longitudinal evolution of nondiffracting pulses truncated by finite apertures
• Localized Waves: A scientific and historical introduction
• Advancing Fourier: space-time concepts in ultrafast optics, imaging and photonic neural networks