Presentation
12 October 2021 The impact of surface particulates and laser-accelerated particles on continuous-wave laser damage
Joseph J. Talghader
Author Affiliations +
Abstract
Typical continuous-wave (CW) laser damage, which is based on average power, differs considerably from its ultra-short-pulse counterpart, which is based on maximum field. Despite this fundamental difference, it has recently been found that CW breakdown in the presence of surface particle contamination (i.e. dirt) has some of the dependences of ultra-short pulse breakdown, such as bandgap dependences, albeit based on very different physical mechanisms. Further studies have shown that particles in air are also a danger to surfaces in high average power applications, with laser breakdown potentially occurring at power levels well below that of both clean optics and optics with fixed surface particles.
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joseph J. Talghader "The impact of surface particulates and laser-accelerated particles on continuous-wave laser damage", Proc. SPIE 11910, Laser-Induced Damage in Optical Materials 2021, 1191006 (12 October 2021); https://doi.org/10.1117/12.2601669
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KEYWORDS
Particles

Continuous wave operation

Laser induced damage

Optical coatings

High power lasers

Diffusion

Laser applications

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