Ontology highlight
ABSTRACT:
SUBMITTER: Kondakci HE
PROVIDER: S-EPMC6389885 | biostudies-other | 2019 Feb
REPOSITORIES: biostudies-other
Nature communications 20190225 1
Controlling the group velocity of an optical pulse typically requires traversing a material or structure whose dispersion is judiciously crafted. Alternatively, the group velocity can be modified in free space by spatially structuring the beam profile, but the realizable deviation from the speed of light in vacuum is small. Here we demonstrate precise and versatile control over the group velocity of a propagation-invariant optical wave packet in free space through sculpting its spatio-temporal s ...[more]