@misc{9242669,
  abstract     = {{Ultrashort broadband pulses can exhibit spatio-temporal couplings (STCs), where the spatial and temporal properties of the beam are introduced by dispersive optical elements. These couplings, including spatial chirp, pulse-front tilt, and pulse-front curvature, can degrade pulse focusing and affect experiments using broadband ultrashort pulses.

This project investigates STCs introduced by optical elements using a supercontinuum source and a spatially resolved Fourier-transform interferometer. A spatially filtered supercontinuum beam was first characterized as a reference, and a pair of convex lenses arranged as a 1:1 telescope was then used to introduce controlled pulse-front curvature. The measured interferograms were reconstructed to obtain spatially resolved wavefront and pulse-front information. In addition, ray-tracing simulations of a 4f pulse-shaping system were performed in FRED to explore possible STC control.

The results show that the reference beam has a relatively uniform spatio-spectral distribution with negligible spatial chirp and weak angular dispersion over the 600--1000 nm spectral range. After insertion of the telescope, measurable spatial-frequency coupling and clear pulse-front curvature were observed. The study demonstrates that spatially resolved Fourier-transform interferometry can be used to identify STCs introduced by optical components, while the 4f simulations provide a basis for future controlled STC manipulation.}},
  author       = {{Wu, Houda}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{Lund reports on atomic physics (LRAP)}},
  title        = {{Measurement and control of spatiotemporal couplings via white-light interferometry}},
  year         = {{2026}},
}