2014
DOI: 10.1364/oe.22.028086
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Formation of 100-nm periodic structures on a titanium surface by exploiting the oxidation and third harmonic generation induced by femtosecond laser pulses

Abstract: Periodic surface structures with periods as small as about one-tenth of the irradiating femtosecond (fs) laser light wavelength were created on the surface of a titanium (Ti) foil by exploiting laser-induced oxidation and third harmonic generation (THG). They were achieved by using 100-fs laser pulses with a repetition rate of 1 kHz and a wavelength ranging from 1.4 to 2.2 μm. It was revealed that an extremely thin TixOy layer was formed on the surface of the Ti foil after irradiating fs laser light with a flu… Show more

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Cited by 63 publications
(36 citation statements)
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“…In that latter reference, an involvement of superficial laser-induced oxidation processes in the formation of HSFL on titanium was proposed. Recently, this hypothesis was further supported in fs-laser third harmonic generation experiments during HSFL formation [34].…”
Section: Resultsmentioning
confidence: 74%
“…In that latter reference, an involvement of superficial laser-induced oxidation processes in the formation of HSFL on titanium was proposed. Recently, this hypothesis was further supported in fs-laser third harmonic generation experiments during HSFL formation [34].…”
Section: Resultsmentioning
confidence: 74%
“…In Figure b, efficient SHG was observed in a Ga NS placed on a glass substrate where there are no plasmonic hot spots. Since the liquid Ga core is expected to give weak SHG, the efficient SHG might come from the Ga 2 O 3 shell which is a transparent semiconductor in the visible light spectrum, similar to the efficient SHG commonly observed in ZnO and TiO 2 nanoparticles or nanostructures …”
Section: Resultsmentioning
confidence: 76%
“…7,8,[18][19][20][21][22][23][24][25][26][27][28] For the SUS and Ti concerned, the surfaces are covered mainly with a thin layer of Cr 2 O 3 33 and TiO 2 , 23 respectively. The native oxide layer is a few to several nanometers in thickness, which would be further developed in air with the local-temperature increase due to irradiation of intense fs laser pulses.…”
mentioning
confidence: 99%