Sub-wavelength ripples in fused silica after irradiation of the solid/liquid interface with ultrashort laser pulses

R. Böhme, C. Vass, B. Hopp, K. Zimmer

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Laser-induced backside wet etching (LIBWE) is performed using ultrashort 248 nm laser pulses with a pulse duration of 600 fs to obtain sub-wavelength laser-induced periodic surface structures (LIPSS) on the back surface of fused silica which is in contact with a 0.5 mol l-1 solution of pyrene in toluene. The LIPSS are strictly one-dimensional patterns, oriented parallel to the polarization of the laser radiation, and have a constant period of about 140 nm at all applied laser fluences (0.33-0.84 J cm-2) and pulse numbers (50-1000 pulses). The LIPSS amplitude varies due to the inhomogeneous fluence in the laser spot. The LIPSS are examined with scanning electron microscopy (SEM) and atomic force microscopy (AFM). Their power spectral density (PSD) distribution is analysed at a measured area of 10 μm × 10 μm. The good agreement of the measured and calculated LIPSS periods strongly supports a mechanism based on the interference of surface-scattered and incident waves.

Original languageEnglish
Article number495301
JournalNanotechnology
Volume19
Issue number49
DOIs
Publication statusPublished - Dec 10 2008

Fingerprint

Fused silica
Ultrashort pulses
Irradiation
Wavelength
Surface structure
Lasers
Liquids
Laser pulses
Wet etching
Pyrene
Power spectral density
Toluene
Laser radiation
Contacts (fluid mechanics)
Atomic force microscopy
Polarization
Scanning electron microscopy

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Sub-wavelength ripples in fused silica after irradiation of the solid/liquid interface with ultrashort laser pulses. / Böhme, R.; Vass, C.; Hopp, B.; Zimmer, K.

In: Nanotechnology, Vol. 19, No. 49, 495301, 10.12.2008.

Research output: Contribution to journalArticle

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