Optimization of the Energy Deposition in Glasses with Temporally-Shaped Femtosecond Laser Pulses

Cyril Mauclair (1) , Konstantin Mishchik (1) , Alexandre Mermillod-Blondin (2) , Arkadi Rosenfeld (2) , Ingolf-Volker Hertel (3) , Eric Audouard (1) , Razvan Stoian (1)

1 LHC - Laboratoire Hubert Curien
2 MBI - Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie
3 MBI - Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie

Bulk machining of glasses with femtosecond laser pulses enables the fabrication of embedded optical functions. Due to the nonlinear character of the laser-matter interaction, structural modifications can occur within the focal region. To reach a full control of the process, ways of controlling the deposition of the laser energy inside the material have to be unveiled. From static and time-resolved pictures of bulk-excitation of a-SiO2 and borosilicate glass, we show that particular laser temporal shapes such as picosecond sequences can better confine the energy deposition than the femtosecond sequence by reducing the propagation artifacts.

Keywords: Ultrafast laser; Waveguide writing; Pump-probe; Temporal shaping

Domains: Engineering Sciences [physics]; Optics / Photonic

Cyril Mauclair, Konstantin Mishchik, Alexandre Mermillod-Blondin, Arkadi Rosenfeld, Ingolf-Volker Hertel, et al.. Optimization of the Energy Deposition in Glasses with Temporally-Shaped Femtosecond Laser Pulses. Physics Procedia, 2011, 12, pp.76-81. ⟨10.1016/j.phpro.2011.03.108⟩. ⟨ujm-00610952⟩