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14 October 2022 Ultrafast electron dynamics in copper thin films resolved by pump-probe measurement
Fei Yang, Guoquan Gao, Bofeng Xue
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Proceedings Volume 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022); 123430Y (2022) https://doi.org/10.1117/12.2648354
Event: 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 2022, Qingdao, China
Abstract
Nonequilibrium electron distribution in copper films is induced under femtosecond laser irradiation. The ultrafast electron dynamics is studied by pump and supercontinuum white light probe technique of transient reflectivity. Measurements of thin films with two thicknesses in the range of electron ballistic length are conducted. We observed faster rise and longer tailing of electron dynamics trace in thinner film, in contrast to results of some previous studies, which could be attributed to weak heat transfer across the interface induced by glass substrate.
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Fei Yang, Guoquan Gao, and Bofeng Xue "Ultrafast electron dynamics in copper thin films resolved by pump-probe measurement", Proc. SPIE 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 123430Y (14 October 2022); https://doi.org/10.1117/12.2648354
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KEYWORDS
Electron transport
Scattering
Copper
Metals
Interfaces
Ultrafast phenomena
Reflectivity
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