10 June 2004 Photothermal microscopy for the study of laser damage initiation by measurement of absorption modification of silica seeded with gold nanoparticles
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Abstract
In order to understand the mechanisms of laser damage initiation, we study “model” samples constituted of pure silica seeded with 3 nm gold particles. Numerical simulations are performed with a 1-D hydrodynamic code to determine the laser light absorption by a spherical nanoparticle. This code also simulates the thermal conduction, radiative transfer and ionization by UV light emitted by the heated metallic particles. The setup used for experimental studies is a high resolution, high sensitivity photothermal microscope. This setup allows correlation between optical absorption and laser irradiation. We observe the silica transformation in terms of absorption modification as a function of the irradiation fluence. The morphology of irradiated samples surface is observed thanks to “Nomarski” and “atomic force” microscopy and compared to photothermal microscopy results. A correlation is observed between flaked silica and strongly absorbing areas.
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Annelise During, Annelise During, Bertrand Bertussi, Bertrand Bertussi, Mireille Commandre, Mireille Commandre, Jean-Yves Natoli, Jean-Yves Natoli, Florian E. Bonneau, Florian E. Bonneau, Patrick Combis, Patrick Combis, Jean-Luc Rullier, Jean-Luc Rullier, Emmanuel Cottancin, Emmanuel Cottancin, Michel Pellarin, Michel Pellarin, } "Photothermal microscopy for the study of laser damage initiation by measurement of absorption modification of silica seeded with gold nanoparticles", Proc. SPIE 5273, Laser-Induced Damage in Optical Materials: 2003, (10 June 2004); doi: 10.1117/12.524856; https://doi.org/10.1117/12.524856
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