Comparative study of ablation processes using femtosecond and nanosecond lasers

Wang, J. Z.; Kanematsu, Y.; Muratsugu, A.; Matsuda, F.; Matsuda, W.; Kawai, Y.; Toyoda, M.

doi:https://doi.org/10.1016/j.rinp.2025.108415

Comparative study of ablation processes using femtosecond and nanosecond lasers

Wang, J. Z.; Kanematsu, Y.; Muratsugu, A. et al.

Results in Physics, 2025, 76, 108415

Number of Access:22（2025-11-25 15:43 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102826

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Title	Comparative study of ablation processes using femtosecond and nanosecond lasers
Creator	CreatorName Wang, J. Z.
	NRID 1000000211855 1000000211855 CreatorName Kanematsu, Y.
	CreatorName Muratsugu, A.
	CreatorName Matsuda, F.
	NRID 1000030791959 1000030791959 researchmap permalink matsudawakana matsudawakana CreatorName Matsuda, W.
	NRID 1000090726671 1000090726671 researchmap permalink kwaiyosuke kwaiyosuke Scopus Author ID 24499993200 24499993200 CreatorName Kawai, Y.
	NRID 1000080283828 1000080283828 ORCID 0000-0001-5950-6039 0000-0001-5950-6039 researchmap permalink toyodam toyodam Scopus Author ID 7201358693 7201358693 CreatorName Toyoda, M.
Description	Wang J.Z., Kanematsu Y., Muratsugu A., et al. Comparative study of ablation processes using femtosecond and nanosecond lasers. Results in Physics 76, 108415 (2025); https://doi.org/10.1016/j.rinp.2025.108415.
Abstract	This study investigated the dynamic characteristics of ions emitted from materials subjected to short-pulsed laser interactions. To investigate the difference in ablation dynamics due to laser pulse irradiation with the same energy but different time scales, we developed a time-of-flight (TOF) mass spectrometer and analyzed the TOF ion profiles obtained by irradiating 180 fs 800 nm Ti:sapphire femtosecond laser and 1 ns 355 nm Nd:YAG nanosecond laser. The effects of incident laser interaction with CsI deposits were examined for laser pulse energies ranging from 400 to 1000 nJ, corresponding to laser intensities of 7.1 × 10¹¹–1.8 × 10¹² W/cm² for femtosecond lasers and 1.3–3.2 × 10⁸ W/cm² for nanosecond lasers. With an ion trajectory simulation incorporating a shifted Maxwell–Boltzmann initial velocity distribution and continuous ion emission, we analyzed the ion emission dynamics from the TOF profiles. Compared with nanosecond lasers, femtosecond lasers generated ions with higher initial velocities but lower temperatures. Under nanosecond laser irradiation, ion emission continued for tens of nanoseconds after the end of the laser pulse, and its duration increased with increasing laser pulse energy. However, no continuous emission occurred under femtosecond laser irradiation.
Publisher	Elsevier B.V.
Source Title	Results in Physics
Volume (Issue)	76
Page	108415
Date of Issued	2025-08-30
Language	English
Handle URL	https://hdl.handle.net/11094/102826
eISSN	22113797
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1016/j.rinp.2025.108415
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Results in Physics. 2025, 76, p. 108415
DC.title	Comparative study of ablation processes using femtosecond and nanosecond lasers
DC.creator	Wang, J. Z.
	Kanematsu, Y.
	Muratsugu, A.
	Matsuda, F.
	Matsuda, W.
	Kawai, Y.
	Toyoda, M.
DC.publisher	Elsevier B.V.
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-08-30
DC.identifier	https://doi.org/10.1016/j.rinp.2025.108415
DC.description	Wang J.Z., Kanematsu Y., Muratsugu A., et al. Comparative study of ablation processes using femtosecond and nanosecond lasers. Results in Physics 76, 108415 (2025); https://doi.org/10.1016/j.rinp.2025.108415.
DCTERMS.abstract	This study investigated the dynamic characteristics of ions emitted from materials subjected to short-pulsed laser interactions. To investigate the difference in ablation dynamics due to laser pulse irradiation with the same energy but different time scales, we developed a time-of-flight (TOF) mass spectrometer and analyzed the TOF ion profiles obtained by irradiating 180 fs 800 nm Ti:sapphire femtosecond laser and 1 ns 355 nm Nd:YAG nanosecond laser. The effects of incident laser interaction with CsI deposits were examined for laser pulse energies ranging from 400 to 1000 nJ, corresponding to laser intensities of 7.1 × 10¹¹–1.8 × 10¹² W/cm² for femtosecond lasers and 1.3–3.2 × 10⁸ W/cm² for nanosecond lasers. With an ion trajectory simulation incorporating a shifted Maxwell–Boltzmann initial velocity distribution and continuous ion emission, we analyzed the ion emission dynamics from the TOF profiles. Compared with nanosecond lasers, femtosecond lasers generated ions with higher initial velocities but lower temperatures. Under nanosecond laser irradiation, ion emission continued for tens of nanoseconds after the end of the laser pulse, and its duration increased with increasing laser pulse energy. However, no continuous emission occurred under femtosecond laser irradiation.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	102826
citation_title	Comparative study of ablation processes using femtosecond and nanosecond lasers
citation_author	Wang, J. Z.
	Kanematsu, Y.
	Muratsugu, A.
	Matsuda, F.
	Matsuda, W.
	Kawai, Y.
	Toyoda, M.
citation_publisher	Elsevier B.V.
citation_language	English
citation_date	2025-08-30
citation_journal_title	Results in Physics
citation_volume	76
citation_firstpage	108415
citation_doi	https://doi.org/10.1016/j.rinp.2025.108415
citation_public_url	https://hdl.handle.net/11094/102826

Comparative study of ablation processes using femtosecond and nanosecond lasers

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