Open AccessQuantitative characterization of energy absorption in femtosecond laser micro-modification of fused silica
Author(s) -
A. V. Dostovalov,
Alexey A. Wolf,
Vladimir Mezentsev,
А. Г. Охримчук,
Sergey A. Babin
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.032541
Subject(s) - femtosecond , optics , materials science , laser , harmonics , absorption (acoustics) , ytterbium , two photon absorption , characterization (materials science) , absorption cross section , cross section (physics) , physics , quantum mechanics , voltage
We present the results of experimental and theoretical study of an energy absorption of femtosecond laser pulse in fused silica. Fundamental and second harmonics of ytterbium laser were used in experiment while general case was considered theoretically and numerically. More efficient absorption at the second harmonics is confirmed both experimentally and numerically. Quantitative characterization of the theoretical model is performed by fitting key parameters of the absorption process such as cross-section of multi-photon absorption and effective electronic collision and recombination times.