Surface damage of extreme-ultraviolet gratings exposed to high-energy 20-fs laser pulses
| Autor: | Paolo Villoresi, Sandro De Silvestri, Salvatore Stagira, Paolo Ceccherini, M. Nisoli, Maria-G. Pelizzo |
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| Předmět: |
Materials science
business.industry Scanning electron microscope Materials Science (miscellaneous) Radiation Laser Fluence Industrial and Manufacturing Engineering law.invention Optics law Extreme ultraviolet High harmonic generation Optoelectronics Irradiation Business and International Management business Diffraction grating |
| Zdroj: | Scopus-Elsevier Applied optics 38 (1999): 4720–4724. info:cnr-pdr/source/autori:PAOLO CECCHERINI, PELIZZO M, PAOLO VILLORESI, SANDRO DE SILVESTRI, MAURO NISOLI, SALVATORE STAGIRA/titolo:Surface Damage of Extreme-Ultraviolet Gratings Exposed to High-Energy 20-fs Laser Pulses/doi:/rivista:Applied optics/anno:1999/pagina_da:4720/pagina_a:4724/intervallo_pagine:4720–4724/volume:38 |
| Popis: | The damage fluences of gratings for diffraction of ultraviolet radiation, which are used in high-order harmonic generation experiments, have been measured with respect to the fundamental laser beam radiation. We have tested gold and platinum coatings of 40- and 50-nm thickness, respectively, deposited onto fused-silica substrates, after irradiation of high-energy, spatially filtered, 20-fs laser pulses at 780 nm. The damage appears at a fluence of approximately 0.3 J cm(-2) for gold and at a fluence of approximately 0.4 J cm(-2) for platinum. Scanning electron microscopy of the irradiated regions revealed different damaging mechanisms for the two coatings. |
| Databáze: | OpenAIRE |
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