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

Konstantin Burdonov; Mikhail Zolotavin; Alexey Sidnev; Evgeny Blinov; Alexander Kotov; Sergey Perevalov; Artem Korzhimanov; Ivan Mukhin; Alexey Pestov; Mikhail Starodubtsev; Efim Khazanov; Andrey Shaykin; Alexander Soloviev

arXiv · 2607.02040

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

Konstantin Burdonov·Mikhail Zolotavin·Alexey Sidnev·Evgeny Blinov·Alexander Kotov·Sergey Perevalov·Artem Korzhimanov·Ivan Mukhin·Alexey Pestov·Mikhail Starodubtsev·Efim Khazanov·Andrey Shaykin·Alexander Soloviev

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Abstract

This paper presents a four-channel prototype system for the geometric combining and coherent addition of tightly focused femtosecond laser radiation into a standing-wave field configuration. A stabilization system for beam pointing and relative phase of the four optical channels has been implemented, and its performance has been experimentally demonstrated. To characterize the standing-wave electromagnetic field distribution at the main focus of the system, an original measurement technique based on a fiber subwavelength optical probe has been employed. This work has been conducted in support of the exawatt-scale XCELS project.

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Konstantin Burdonov, Mikhail Zolotavin, Alexey Sidnev, Evgeny Blinov, Alexander Kotov, Sergey Perevalov, Artem Korzhimanov, Ivan Mukhin, Alexey Pestov, Mikhail Starodubtsev, Efim Khazanov, Andrey Shaykin, Alexander Soloviev. 2026-07-02. Four-channel prototype using coherent combining of ultrashort laser pulses for dipole configuration approximation. https://arxiv.org/abs/2607.02040

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