Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/193610

Download PDF (Published version) (Adobe Acrobat PDF, -1 bytes)

Title

Suppression of ripples on ablated Ni surface via a polarization grating

Author(s)

Iwase, Hideo;  Kokubo, Satoshi;  Juodkazis, Saulius;  Misawa, Hiroaki

Abstract

Gratings were recorded on the surface of nickel by ablation without formation of ripples using an interference of two p-polarized femtosecond laser beams at a π/4 angle of incidence. The mechanism of ripples' suppression is explained by formation of a polarization grating and by ablation at the locations where the polarization is normal to the Ni surface. The aspect ratio of the ablated grooves was ~3 with the period !570 nm at the central wavelength of irradiation of 800 nm. This method is applicable for laser structuring of different materials and a recorded grating structure can be scaled with the irradiation wavelength.

Publication type

Journal article

Source

Optics Express, Vol. 17, no. 6 (Mar 2009), pp. 4388-4396

Publication year

2009

FOR Code(s)

0205 Optical Physics;  0903 Biomedical Engineering;  1113 Ophthalmology and Optometry

Keyword(s)

Ablation;  Femtosecond laser pulses;  Gratings;  Nickel;  Polarization;  Ripple formation;  Ripple suppression

Publisher

Optical Society of America

ISSN

1094-4087

Publisher URL

http://dx.doi.org/10.1364/oe.17.004388

Copyright

Copyright © 2009 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/oe.17.004388. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Full text

Peer reviewed