  Using realistic laser profiles for simulations of laser-plasma interaction is
critical to reproduce experimental measurements, but the interface between
experiments and simulations can be challenging. Similarly, start-to-end
simulations with different codes may require error-prone manipulations to
convert between different representations of a laser pulse. In this work, we
propose LASY, an open-source Python library to simplify these workflows.
Developed through an international collaboration between experimental,
theoretical and computational physicists, LASY can be used to initialize a
laser profile from an experimental measurement, from a simulation, or from
analytics, manipulate it, and write it into a file in compliance with the
openPMD standard. This profile can then be used as an input of a simulation
code.
