Subwavelength Plasma Gratings Formation in the Process of Laser Modification in the Volume of Fused Silica

Anna Bogatskaya, Anna Bogatskaya, Ekaterina A. Volkova, Alexander Popov, Alexander Popov

2024

Abstract

In this work, a numerical study of the formation of plasma periodic subwavelength nanogratings in fused silica along the propagation of a focused laser pulse is carried out. It is shown that the tightly focused beam creates a supercritical plasma in the focal plane, which provides an effective reflection of the parts of incident and reflected laser pulse. As a result, standing wave of ionization occurs which generates a plasma lattice with a period equal to the period of the standing wave in the medium. The results of modelling allow us to determine the optimal laser parameters in the regime of linear (geometrical) focusing when the contrast nanogratings can emerge. Analysis of energy release processes with subsequent melting of the fused silica sample confirms the previously proposed mechanism of laser modification.

Paper Citation

in Harvard Style

Bogatskaya A., A. Volkova E. and Popov A. (2024). Subwavelength Plasma Gratings Formation in the Process of Laser Modification in the Volume of Fused Silica. In Proceedings of the 12th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS; ISBN 978-989-758-686-6, SciTePress, pages 15-20. DOI: 10.5220/0012375200003651

in Bibtex Style

@conference{photoptics24,
author={Anna Bogatskaya and Ekaterina A. Volkova and Alexander Popov},
title={Subwavelength Plasma Gratings Formation in the Process of Laser Modification in the Volume of Fused Silica},
booktitle={Proceedings of the 12th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS},
year={2024},
pages={15-20},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012375200003651},
isbn={978-989-758-686-6},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 12th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS
TI - Subwavelength Plasma Gratings Formation in the Process of Laser Modification in the Volume of Fused Silica
SN - 978-989-758-686-6
AU - Bogatskaya A.
AU - A. Volkova E.
AU - Popov A.
PY - 2024
SP - 15
EP - 20
DO - 10.5220/0012375200003651
PB - SciTePress