Tubular filamentation for laser material processing

Scientific Reports
Chen XieF Courvoisier

Abstract

An open challenge in the important field of femtosecond laser material processing is the controlled internal structuring of dielectric materials. Although the availability of high energy high repetition rate femtosecond lasers has led to many advances in this field, writing structures within transparent dielectrics at intensities exceeding 10(13) W/cm(2) has remained difficult as it is associated with significant nonlinear spatial distortion. This letter reports the existence of a new propagation regime for femtosecond pulses at high power that overcomes this challenge, associated with the generation of a hollow uniform and intense light tube that remains propagation invariant even at intensities associated with dense plasma formation. This regime is seeded from higher order nondiffracting Bessel beams, which carry an optical vortex charge. Numerical simulations are quantitatively confirmed by experiments where a novel experimental approach allows direct imaging of the 3D fluence distribution within transparent solids. We also analyze the transitions to other propagation regimes in near and far fields. We demonstrate how the generation of plasma in this tubular geometry can lead to applications in ultrafast laser material proce...Continue Reading

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Citations

Dec 15, 2015·Scientific Reports·Jijil Jj NivasSalvatore Amoruso
Sep 6, 2017·Scientific Reports·Yoshio HayasakiSaulius Juodkazis
Nov 28, 2019·Optics Letters·Xiaohui GaoAlexander L Gaeta
Feb 7, 2018·Optics Express·Klaus BergnerStefan Nolte
Mar 10, 2018·Optics Express·Adam M SummersCarlos A Trallero-Herrero
Aug 30, 2018·Stem Cells International·Kevin DzoboKeolebogile Shirley Caroline M Motaung
Sep 15, 2015·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Chen XieFrancois Courvoisier
Sep 11, 2020·Optics Express·N NaseriL Ramunno
Mar 4, 2020·Optics Express·Kazem ArdanehFrancois Courvoisier
Jun 2, 2021·Optics Letters·Huajie HuFuli Li
Oct 13, 2015··F. CourvoisierJ. M. Dudley
Mar 4, 2019··Daniel GrossmannJulian Hellstern

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Methods Mentioned

BETA
transmission microscopy

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