The effects on glass surfaces of shrapnel and debris emissions from Petawatt laser driven solid targets

James E. Andrew; Katherine A. Wallace

doi:10.1117/12.836108

31 December 2009 The effects on glass surfaces of shrapnel and debris emissions from Petawatt laser driven solid targets

James E. Andrew, Katherine A. Wallace

Author Affiliations +

Proceedings Volume 7504, Laser-Induced Damage in Optical Materials: 2009; 75040U (2009) https://doi.org/10.1117/12.836108
Event: Laser Damage Symposium XLI: Annual Symposium on Optical Materials for High Power Lasers, 2009, Boulder, Colorado, United States

Abstract

Chirped pulse amplification [CPA] has been implemented on laser facilities to produce high irradiance conditions in a vacuum chamber for the study of novel plasma physics processes. When such focussed laser beams interact with solid targets, the material is disrupted and leads to ejecta as solids, liquids, vapours and radiation. These target by-products can degrade and damage optical or diagnostic surfaces in the interaction chamber. This paper describes the effects of such emissions on surfaces by the use of metrology, microscopy, image processing, fragment capture in foams and autoradiography. Target plume divergence is discussed so that precautions for future experiments can be evaluated.

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James E. Andrew and Katherine A. Wallace "The effects on glass surfaces of shrapnel and debris emissions from Petawatt laser driven solid targets", Proc. SPIE 7504, Laser-Induced Damage in Optical Materials: 2009, 75040U (31 December 2009); https://doi.org/10.1117/12.836108

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