Femtosecond laser induced X-ray emission from metal alloys, polymers and color filters

Koji Hatanaka, Ken Ichiro Yomogihata, Hiroshi Ono, Hiroshi Fukumura

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Various material surfaces were irradiated on a moving stage with focused laser pulses from a conventional 1 kHz femtosecond laser system, and X-ray emission spectra were measured during the laser ablation of the materials. Sharp K or L characteristic X-ray lines from the elements contained in the materials were clearly observed in a range of 2-15 keV. Signals due to copper and zinc were recognizable within a few minutes when a brass surface was irradiated. Poly(vinyl chloride) gave a marked emission originating from chlorine. When a color glass filter was irradiated, the detection of cobalt and arsenic was possible even though the amounts of these components were estimated to be less than 1 wt.% by using an electron probe microanalyzer. Time-integrated emission spectra in the visible region were also monitored during the femtosecond laser ablation of these materials. The emission spectra in the visible region were complicated owing to peaks originating from air components and white continuum emissions. Thus, the elemental analysis by femtoseond laser induced X-ray is considered to be useful for some samples. The etched trenches left at the surfaces after the laser ablation were examined with an optical microscope. The trench width varied with the materials, which may be attributed to changes in the irradiation area giving maximum counts of X-ray emission.

Original languageEnglish
Pages (from-to)232-237
Number of pages6
JournalApplied Surface Science
Issue number1-4
Publication statusPublished - 2005 Jul 15
EventProceedings of the European Materials Research Society 2004 - Symposium N EMRS-2004 -
Duration: 2004 May 242004 May 28


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ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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