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Contrasted material responses to nanosecond multiple-pulse laser damage: from statistical behavior to material
Frank R Wagner1, Céline Gouldieff, Jean-Yves Natoli
1Aix Marseille Université, CNRS, Ecole Centrale Marseille, Institut Fresnel, 13013 Marseille, France. frank.wagner@fresnel.fr
Optics Letters
|June 1, 2013
Summary
This study investigates fatigue effects in laser-induced material damage. Nanosecond laser pulses at 1064 nm show statistical fatigue, while 355 nm pulses cause material modification in fused silica.
Area of Science:
- Materials Science
- Laser Physics
- Optics
Background:
- Laser-induced damage is a critical factor limiting the performance of optical materials.
- Understanding fatigue effects under multiple laser pulses is essential for material selection and device reliability.
Purpose of the Study:
- To investigate fatigue effects in nanosecond laser-induced damage of crystalline materials and synthetic fused silica.
- To differentiate between statistical fatigue and material modification under multi-pulse irradiation.
Main Methods:
- Irradiation of crystalline materials and synthetic fused silica with multiple nanosecond laser pulses.
- Analysis of damage probability as a function of laser fluence and pulse number.
- Comparison of results for 1064 nm and 355 nm irradiation wavelengths.
Main Results:
- 1064 nm laser irradiation exhibited a statistical fatigue behavior, where damage probability increased with irradiation.
- 355 nm laser irradiation induced material modifications in synthetic fused silica, indicating a change in material properties.
- Fatigue mechanisms differ between wavelengths and materials.
Conclusions:
- The study distinguishes between statistical fatigue and material modification in laser-induced damage.
- Wavelength-dependent mechanisms govern laser-induced damage fatigue in optical materials.
- Material modification under 355 nm irradiation highlights potential for laser conditioning or degradation.
