Shaping Ultrafast Pulses for Enhanced Resonant Nonlinear Interactions.

ABSTRACT: Coherent control with shaped ultrafast pulses is a powerful approach for steering nonlinear light-matter interactions. Prior quantum control studies show that, beyond transform-limited pulses, antisymmetric spectral phases can efficiently drive nonresonant multiphoton transitions. However, resonant multiphoton transitions experience dispersion from the material's spectral-phase response, which lowers nonlinear efficiency. Preshaping the pulse to compensate for this response can restore and enhance nonlinear interactions beyond transform-limited pulses. But is this the only spectral phase to yield such enhancement? Here, we study sub-10 fs single-pulse four-wave mixing in resonant plasmonic nanostructures using arctangent spectral-phase-shaped pulses. We identify two distinct enhancement re

SUBMITTER: Meron O 

PROVIDER: S-EPMC12670494 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature