Space–time wave packets violate the universal relationship between angular dispersion and pulse-front tilt
Abstract
Introducing angular dispersion into a pulsed field tilts the pulse front with respect to the phase front. There exists between the angular dispersion and pulse-front tilt a universal relationship that is device-independent, and also independent of the pulse shape and bandwidth. We show here that this relationship is violated by propagation-invariant space–time (ST) wave packets, which are pulsed beams endowed with precise spatiotemporal structure corresponding to a particular form of angular dispersion. We demonstrate theoretically and experimentally that ST wave packets represent, to the best of our knowledge, the first example in optics of non-differentiable angular dispersion, resulting in pulse-front tilt that depends on the square-root of the pulse bandwidth.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 24, 2021
- Source ID
- 10.1364/ol.420135
Entities
People
- Ayman F Abouraddy
- Layton A. Hall
- Murat Yessenov
Organizations
- Office of Naval Research
- University of Central Florida