The 83rd JSAP Autumn Meeting 2022

Presentation information

Oral presentation

4 JSAP-Optica-SPP Joint Symposia 2022 » 4.3 Lasers and laser materials processing

[23p-C205-1~11] 4.3 Lasers and laser materials processing

Fri. Sep 23, 2022 1:15 PM - 5:00 PM C205 (C205)

Daisuke Nakamura(Kyushu Univ.), Yusuke Ito(Univ. Tokyo)

3:00 PM - 3:30 PM

[23p-C205-6] [INVITED] Generation of high-aspect ratio, dense nano-plasmas in solid dielectrics with femtosecond Bessel beams

Francois Courvoisier1,2, Benoit Morel1,2, Pierre-Jean Charpin1,2, Mostafa Hassan1,2, Kazem Ardaneh1,2, Valeria Viviana Belloni1,2, Remi Meyer1,2, Luca Furfaro1,2, Luc Froehly1,2, Remo Giust1,2 (1.CNRS FEMTO-ST, 2.Univ. Bourgogne Franche Comte)

Keywords:stealth-dicing, femtosecond laser, Bessel beams

For applications such as glass cutting or through-via drilling, we investigate the formation of high aspect ratio nanochannels using a femtosecond "diffraction-free" Bessel beam.It is now possible to cut glass up to 1 cm in thickness with stealth-dicing technology. We will review the main technological advances in this field and report recent results on the fundamental processes leading to the formation of very dense nano-plasmas within glass and sapphire.