High-spatial-frequency periodic surface structures on steel substrate induced by subnanosecond laser pulses

Haruki Hikage, Nami Nosaka, Shigeki Matsuo

研究成果: Article

抄録

By irradiation with 0.5 ns laser pulses at a wavelength λ = 1.064 m, laser-induced periodic surface structures (LIPSS) were fabricated on a steel substrate. In addition to low-spatial-frequency LIPSS (LSFL), a high-spatial-frequency LIPSS (HSFL) of period Λ ∼ 0.4λ with two-dimensional expansion was formed, although it is generally recognized that HSFL are formed only by ultrafast laser pulses. The wavevector of the observed HSFL was perpendicular to the electric field of the irradiated laser pulse (each ridge/groove of the HSFL was parallel to the electric field). We discuss the relationship between the formation of HSFL and the pulse duration.

元の言語English
記事番号112701
ジャーナルApplied Physics Express
10
発行部数11
DOI
出版物ステータスPublished - 2017 11 1

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Surface structure
Laser pulses
steels
Steel
Lasers
Substrates
pulses
Electric fields
lasers
Ultrafast lasers
Irradiation
Wavelength
electric fields
grooves
ridges
pulse duration
irradiation
expansion
wavelengths

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

これを引用

High-spatial-frequency periodic surface structures on steel substrate induced by subnanosecond laser pulses. / Hikage, Haruki; Nosaka, Nami; Matsuo, Shigeki.

:: Applied Physics Express, 巻 10, 番号 11, 112701, 01.11.2017.

研究成果: Article

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