论文信息 - Time-resolved microscopy studies of laser damage dynamics at 0.5-1ps, 1030nm

Time-resolved microscopy studies of laser damage dynamics at 0.5-1ps, 1030nm

Based on an experimental system that can be used for simultaneous laser damage testing and time-resolved acquisition of intensity and phase images, we describe different experiments related to the study of laser damage process in the sub-picosecond regime. We report firstly on quantitative measurement of the Kerr effect in a fused silica substrate at fluences closed to the Laser Induced Damage Threshold. Then we study the damage initiation process in optical coatings, linked to intrinsic properties of the materials, and the dynamics of free electron generation and relaxation. At last, damage growth sequences are analyzed with time-resolved microscopy in order to understand laser damage growth in the case of High Reflective mirrors.

[1] L. Gallais,et al. Quantitative phase imaging applied to laser damage detection and analysis. , 2015, Applied optics.

[2] P Balling,et al. Femtosecond-laser ablation dynamics of dielectrics: basics and applications for thin films , 2013, Reports on progress in physics. Physical Society.

[3] Laurent Gallais,et al. Direct holographic imaging of ultrafast laser damage process in thin films. , 2014, Optics letters.

[4] L. Gallais,et al. Time-resolved quantitative-phase microscopy of laser-material interactions using a wavefront sensor. , 2016, Optics letters.

[5] Laurent Gallais,et al. What time-resolved measurements tell us about femtosecond laser damage? , 2015, SPIE Laser Damage.

[6] Martin Sozet,et al. Laser damage growth with picosecond pulses. , 2016, Optics letters.

[7] M. Feit,et al. Searching for optimal mitigation geometries for laser-resistant multilayer high-reflector coatings. , 2011, Applied optics.