At the ultrafast timescale the propagation of light pulses through a dielectric material is not only determined by the envelope, but also by nonlinear interactions that evolve within one optical cycle. Here, the authors demonstrate a method to determine the subcycle-resolved delay to a probe pulse in ultrafast, high-field pump–probe experiments.
- Aseem Prakash Pati
- Imam Setiawan Wahyutama
- Adrian Nikolaus Pfeiffer