Effects of burst mode on transparent materials processing

C. Javaux Léger (1) , K Mishchik (2) , O Dematteo-Caulier (2) , Stefan Skupin (2) , B Chimier (2) , G Duchateau (2) , A Bourgeade (3) , C Hoenninger (4) , E Mottay (4) , J Lopez (2) , R Kling (1)

1 alphanov
2 CELIA - Centre d'Etudes Lasers Intenses et Applications
3 CESTA - Centre d'études scientifiques et techniques d'Aquitaine
4 Amplitude Systèmes

We investigated the effect of burstmode with nanosecond (ns) time delay between subpulses on sodalime glass volume machining. We observed in tight focusing configuration that the use of burstmode with ns time delay between subpulses does not increase the absorption efficiency and does not bring a significant effect on the heat affected zone diameter with respect to single pulse mode. On the contrary in loose focusing configuration the use of burst mode allows increasing the aspect ratio of the heat affected zone without extra energy absorption. This effect is highly interesting for filamentation glass cutting applications.

Mots clés: ultrafast laser; burst; transparent material; welding; cutting; filamentation

Domaines: Optique [physics.optics]; Physique Atomique [physics.atom-ph]; Physique des plasmas [physics.plasm-ph]

C. Javaux Léger, K Mishchik, O Dematteo-Caulier, Stefan Skupin, B Chimier, et al.. Effects of burst mode on transparent materials processing. Laser-based Micro- and Nanoprocessing IX, Feb 2015, San Francisco, United States. pp.93510M, ⟨10.1117/12.2079677⟩. ⟨hal-01133734⟩