The Role of Self-Focusing During the Laser Microstructuring in the Volume of Fused Silica

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

2025

Abstract

In this study we perform 3D self-consistent numerical simulations of a focused laser pulse exposure in the bulk of fused silica. The model combines the second-order wave equation in cylindrical coordinates with a rate equation for the density of charge carriers in the conduction band. Our results indicate that a dense plasma formation near the focal plane effectively scatters and reflects the laser pulse. The coherent interference between the incident and scattered laser waves creates regions of intense field ionization, resulting in periodic plasma nanostructures along both the ρ- and z-axes. We also examine the impact of nonlinear refractive index effects, which lead to pulse self-focusing. We should note that similar subwavelength, divergent structures in material modification regions have been observed in recent experiments conducted under comparable laser focusing conditions.

Paper Citation

in Harvard Style

Bogatskaya A., Volkova E. and Popov A. (2025). The Role of Self-Focusing During the Laser Microstructuring in the Volume of Fused Silica. In Proceedings of the 13th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS; ISBN 978-989-758-736-8, SciTePress, pages 120-125. DOI: 10.5220/0013248900003902

in Bibtex Style

@conference{photoptics25,
author={Anna Bogatskaya and Ekaterina Volkova and Alexander Popov},
title={The Role of Self-Focusing During the Laser Microstructuring in the Volume of Fused Silica},
booktitle={Proceedings of the 13th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS},
year={2025},
pages={120-125},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013248900003902},
isbn={978-989-758-736-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 13th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS
TI - The Role of Self-Focusing During the Laser Microstructuring in the Volume of Fused Silica
SN - 978-989-758-736-8
AU - Bogatskaya A.
AU - Volkova E.
AU - Popov A.
PY - 2025
SP - 120
EP - 125
DO - 10.5220/0013248900003902
PB - SciTePress