Laser-induced periodic surface structures on bismuth thin films with ns laser pulses below ablation threshold

We demonstrate the formation of laser-induced periodic surface structures (LIPSS) in bismuth (Bi) thin films by irradiation with nanosecond laser pulses. We report on the formation and the destruction of the LIPSS as a result of the delivered number of pulses; both the formation and destruction thre...

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Bibliographic Details
Published in:Optical materials express 2017-06, Vol.7 (6), p.1777
Main Authors: Reyes-Contreras, A., Camacho-López, M., Camacho-López, S., Olea-Mejía, O., Esparza-García, A., Bañuelos-Muñetón, J. G., Camacho-López, M. A.
Format: Article
Language:English
Subjects:
Bismuth
Destruction
Irradiation
Laser ablation
Lasers
Oxidation
Periodic variations
Thin films
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Summary:We demonstrate the formation of laser-induced periodic surface structures (LIPSS) in bismuth (Bi) thin films by irradiation with nanosecond laser pulses. We report on the formation and the destruction of the LIPSS as a result of the delivered number of pulses; both the formation and destruction threshold were very well determined. Results show that the obtained LIPSS are perpendicular to the laser polarization, and their ripple periodicity is on the order of the irradiation wavelength. Although all the irradiation experiments were done in ambient air, Raman micro-spectroscopy indicates that the LIPSS are constituted by metallic bismuth, i. e. the LIPSS formation is oxidation free.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.7.001777