Work

Single-shot spatiotemporal characterization of ultrashort lasers based on spectral interferometry with fiber array

Year: 2026

Type: article

Abstract: In the realm of ultra-intense laser physics, the precise characterization of laser pulses is indispensable. An innovativemethod named spectral interferometry with fiber array for single-shot spatiotemporal characterization (SIFAST) is designed to overcome the challenges in measuring the spatiotemporal coupling parameters of petawatt laser pulses. SIFAST employs a specially designed single-mode fiber array to simultaneously collect interferometric spectra from multiple spatial points, thereby eliminating the need for spatial scanning. This method enables the reconstruction of a complete three-dimensional spatiotemporal structure of the laser pulse, marking a significant advancement in the field of laser pulse characterization.

Source: Communications Physics

DOI: 10.1038/s42005-026-02581-z