Time-resolved surface scattering imaging of organic liquids under femtosecond KrF laser pulse excitation

Koji Hatanaka*, Tamitake Itoh, Tsuyoshi Asahi, Nobuyuki Ichinose, Shunichi Kawanishi, Tsuneo Sasuga, Hiroshi Fukumura, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Time-resolved surface scattering imaging was performed for liquid benzyl chloride and liquid toluene under femtosecond KrF laser ablation conditions. No scattering image was obtained until 1 ns, while scattering started from 2 ns when the laser fluence exceeded 25mJ/cm2, and its intensity increased with the passage of time. The higher the laser fluence was, the steeper the increasing slope was. The scattering is due to surface roughness, which is the initial stage of macroscopic morphological changes. Root-mean-square surface roughness was estimated from the scattering intensity by using frosted fused-silica plates as reference samples. The induced surface roughness increases to a few hundred nm in 10 ns.

Original languageEnglish
Pages (from-to)3498-3500
Number of pages3
JournalApplied Physics Letters
Volume73
Issue number24
DOIs
StatePublished - 1 Dec 1998

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    Hatanaka, K., Itoh, T., Asahi, T., Ichinose, N., Kawanishi, S., Sasuga, T., Fukumura, H., & Masuhara, H. (1998). Time-resolved surface scattering imaging of organic liquids under femtosecond KrF laser pulse excitation. Applied Physics Letters, 73(24), 3498-3500. https://doi.org/10.1063/1.122816