FI_KLFF15: Ultrafast Pump–Probe Spectroscopy with Laser-Driven Sources

Develop a dual-beam pump–probe platform spanning THz to XUV with independent sub-fs / few-fs pulses and delay control from <100 fs up to ~1 ms. Use laser-driven XUV (HHG) probes to interrogate:
1) Femtosecond electronic and structural dynamics in molecules, solids, nanostructures, and warm-dense matter.
2) Microsecond–millisecond relaxation, trapping, phase evolution, and defect dynamics.
3) Cross-spectral correlations (THz↔NIR↔XUV) to connect charge transport with band-structure and core-level responses.