The Generation Mechanism of Airy-Bessel Wave Packets in Free Space

Localized optical Airy-Bessel configuration wave packets were first generated on the basis of a grating-telescope combination [Nat. Photon. 4 (2010) 103]. By studying the spatially induced group velocity dispersion effect of ultrashort pulsed Bessel beams during propagation, we find the universal physical foundation of generating Airy-Bessel wave packets (ABWs) in free space. The research results are expected to open up more common channels for generating stable linear localized ABWs.