Tailoring spatiotemporal wavepackets via two-dimensional space-time duality.

ABSTRACT: Spatiotemporal (ST) beams-ultrafast optical wavepackets with customized spatial and temporal characteristics-present a significant contrast to conventional spatial-structured light and hold the potential to revolutionize our understanding and manipulation of light. However, progress in ST beam research has been constrained by the absence of a universal framework for its analysis and generation. Here, we introduce the concept of 'two-dimensional space-time duality', establishing a foundational duality between spatial-structured light and ST beams. We show that breaking the exact balance between paraxial diffraction and narrow-band dispersion is crucial for guiding the dynamics of ST wavepackets. Leveraging this insight, we pioneer a versatile complex-amplitude modulation strategy, enabling

SUBMITTER: Chen W 

PROVIDER: S-EPMC11928535 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature