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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 2 — Jan. 15, 2012
  • pp: 190–192

Periodic nanostructures on Si(100) surfaces generated by high-repetition rate sub-15 fs pulsed near-infrared laser light

Martin Straub, Maziar Afshar, Dara Feili, Helmut Seidel, and Karsten König  »View Author Affiliations


Optics Letters, Vol. 37, Issue 2, pp. 190-192 (2012)
http://dx.doi.org/10.1364/OL.37.000190


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Abstract

Nanoscale rifts and ripples at a periodicity of 130 nm were generated on Si(100) surfaces immersed in water using tightly focused 800 nm 12 fs pulsed 85 MHz laser light at subnanojoule pulse energies. At radiant exposure close to the ablation threshold rifts were typically 20–50 nm in width and 70 nm in depth running perpendicular to the laser polarization. On increase of the irradiance, the rifts broadened and formed periodic ripples, whereas at highest exposure, a random nanoporous surface topology emerged. Rift and ripple formation is explained by laser-induced standing surface plasma waves, which result in periodic variation of dissipation and ablation.

© 2012 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(140.7090) Lasers and laser optics : Ultrafast lasers
(180.5810) Microscopy : Scanning microscopy
(190.4180) Nonlinear optics : Multiphoton processes
(240.6680) Optics at surfaces : Surface plasmons
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 6, 2011
Manuscript Accepted: November 9, 2011
Published: January 12, 2012

Citation
Martin Straub, Maziar Afshar, Dara Feili, Helmut Seidel, and Karsten König, "Periodic nanostructures on Si(100) surfaces generated by high-repetition rate sub-15 fs pulsed near-infrared laser light," Opt. Lett. 37, 190-192 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-2-190

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