RT Journal Article
T1 Curve-shaped ultrashort laser pulses with programmable spatiotemporal behavior
A1 Franco Rodríguez, Enar
A1 Martínez Matos, Óscar
A1 Rodrigo Martín Romo, José Augusto
AB Structured ultrashort laser pulses with controlled spatiotemporal properties are emerging as a key tool for the study and application of light-matter interactions in different fields such as microscopy, time-resolved imaging, laser micromachining, particle acceleration, and attosecond science. In practice, a structured ultrashort pulse focused along a target trajectory with controlled pulse dynamics is required, e.g., to set the trajectory and velocity of the resulting intensity peak. Here, to address this challenging problem, we present a technique and experimental setup that allows straightforward engineering of structured ultrashort laser pulses with control of their spatiotemporal properties enabling tailored pulse propagation dynamics along the target trajectory. Our theoretical framework describes the design and control of this kind of curve-shaped laser pulse in terms of the curve geometry and phase prescribed along it. We have derived a closed-form expression that describes the interplay between the curve geometry and prescribed phase governing the pulse dynamics, including the temporal behavior of the pulse peak intensity while preserving the pulse duration. The theoretical results and the corresponding numerical simulations allow us to analyze the pulse dynamics on the example of femtosecond curve-shaped vortex pulses, including contour-shaped pulses created to follow the outline of objects at micrometer scale. The experimental results demonstrate the generation of these structured ultrashort pulses. These findings could pave the way for the next generation of ultrashort laser-based optical tools for the study and control of light-matter interactions.
PB Optica Publishing Group
SN 2334-2536
YR 2023
FD 2023-03-08
LK https://hdl.handle.net/20.500.14352/87360
UL https://hdl.handle.net/20.500.14352/87360
LA eng
NO © 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing AgreementThe facilities provided by the Center for Ultrafast Lasers at Universidad Complutense de Madrid are gratefully cknowledged. We also gratefully acknowledge the support of NVIDIA Corporation with the donation of the TITAN X GPU device (NVIDIA Academic Hardware Grant Program) used to compute the numerical simulations. E. Franco acknowledges financial support from the European Social Fund and the Spanish Ministerio de Ciencia e Innovación, Contract Grant PRE2019- 087616.Funding. Ministerio de Ciencia e Innovación (PGC2018-095595-B-I00,PID2021-125483NB-I00).
NO Ministerio de Ciencia e Innovación (MICINN)/FSE
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 19 abr 2025