Pulsed laser-assisted surface structuring with optical near-field enhanced effects

S. M. Huang, M. H. Hong, B. S. Luk'Yanchuk, Y. W. Zheng, W. D. Song, Y. F. Lu, T. C. Chong

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

The effects of optical resonance and near field in the interaction of transparent particles on a substrate with laser light have been examined experimentally and theoretically. It is found that pits can be created at the contacting point between the particle and the metallic surface by laser irradiation (KrF,λ=248nm) with a single pulse. The influence of the particle size and the laser fluence on the structuring of the surface has been investigated. The size of the particle ranges from 1.0 μm to 140 nm in diameter. The morphologies of the holes created have been characterized by an atomic force microscope and a scanning electron microscope. For constant laser fluence, the created hole is sensitive to the particle size. For higher-laser fluence, the corresponding hole becomes larger and deeper. With a low fluence of 300 mJ/cm 2 and for 140 nm particles, the lateral dimensions of created pits can be down to 30 nm. With a high fluence of 750 mJ/cm 2 and 1.0 μm particles, the diameter and the depth of created holes are about 350 and 100 nm, respectively. Theoretical calculations and an accurate solution of a boundary problem indicate that incident light could excite some resonance modes inside the particle and produce enhanced light intensities on the contacting area (substrate surface). The light intensity on the contacting area is nonuniform and sensitive to the particle size parameter. Experimental results are explained and are very consistent with those of theoretical calculations. The experimental results also provide direct evidence of the optical resonance and near-field effects in the interaction of transparent particles on the substrate with laser light.

Original languageEnglish (US)
Pages (from-to)2495-2500
Number of pages6
JournalJournal of Applied Physics
Volume92
Issue number5
DOIs
StatePublished - Sep 1 2002

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pulsed lasers
near fields
fluence
lasers
optical resonance
luminous intensity
electron microscopes
microscopes
interactions
irradiation
scanning
pulses

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Huang, S. M., Hong, M. H., Luk'Yanchuk, B. S., Zheng, Y. W., Song, W. D., Lu, Y. F., & Chong, T. C. (2002). Pulsed laser-assisted surface structuring with optical near-field enhanced effects. Journal of Applied Physics, 92(5), 2495-2500. https://doi.org/10.1063/1.1501768

Pulsed laser-assisted surface structuring with optical near-field enhanced effects. / Huang, S. M.; Hong, M. H.; Luk'Yanchuk, B. S.; Zheng, Y. W.; Song, W. D.; Lu, Y. F.; Chong, T. C.

In: Journal of Applied Physics, Vol. 92, No. 5, 01.09.2002, p. 2495-2500.

Research output: Contribution to journalArticle

Huang, SM, Hong, MH, Luk'Yanchuk, BS, Zheng, YW, Song, WD, Lu, YF & Chong, TC 2002, 'Pulsed laser-assisted surface structuring with optical near-field enhanced effects', Journal of Applied Physics, vol. 92, no. 5, pp. 2495-2500. https://doi.org/10.1063/1.1501768
Huang, S. M. ; Hong, M. H. ; Luk'Yanchuk, B. S. ; Zheng, Y. W. ; Song, W. D. ; Lu, Y. F. ; Chong, T. C. / Pulsed laser-assisted surface structuring with optical near-field enhanced effects. In: Journal of Applied Physics. 2002 ; Vol. 92, No. 5. pp. 2495-2500.
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