Work

Four-channel prototype using coherent combining of ultrashort laser pulses for dipole configuration approximation

Year: 2026

Type: article

Abstract: This paper presents a four-channel prototype system for coherent combining of tightly focused femtosecond laser beams into an electric-dipole (e-dipole) standing-wave configuration. A stabilization system for the beam pointing and the relative phase of the four optical channels was implemented, and its performance was demonstrated experimentally. The interference structure of the standing wave at the main focus was characterized using an original measurement technique based on a subwavelength fiber-optic probe. This work is motivated by the exawatt-class XCELS project.

Source: Scientific Reports

DOI: 10.1038/s41598-026-73216-0