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10 March 2020 Generalized two-temperature fitting algorithm for ultrashort laser heating of metal film and nanoparticles (Conference Presentation)
Paul Bresson, Jean-François Bryche, Julien Moreau, Paul-Ludovic Karsenti, Mondher Besbes, Denis Morris, Paul Charette, Michael Canva
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Proceedings Volume 11278, Ultrafast Phenomena and Nanophotonics XXIV; 1127814 (2020) https://doi.org/10.1117/12.2545328
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
Few studies in literature have try to quantitatively compare the 2T model with experimental data at very short time scale and study the dependency and importance of model’s parameters. We have developed a new numerical model and fitting algorithm which combined the 2T model, thermal conduction and 3D FEM EM code to link the spatial distribution of temperature to the optical reflectivity of the sample. Using a state-of-the-art pump-probe setup allowing the acquisition of the full spectro-temporal optical response of the sample, we have compared measurements on thin gold films and array of nanostructures with our model.
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Paul Bresson, Jean-François Bryche, Julien Moreau, Paul-Ludovic Karsenti, Mondher Besbes, Denis Morris, Paul Charette, and Michael Canva "Generalized two-temperature fitting algorithm for ultrashort laser heating of metal film and nanoparticles (Conference Presentation)", Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 1127814 (10 March 2020); https://doi.org/10.1117/12.2545328
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KEYWORDS
3D modeling
Metals
Nanoparticles
Absorption
Finite element methods
Nanostructures
Plasmonics
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