Structural changes in fused silica after exposure to focused femtosecond laser pulses

James W Chan, Thomas R Huser, S. Risbud, D. M. Krol

Research output: Contribution to journalArticle

337 Citations (Scopus)

Abstract

Using in situ Raman scattering in a confocal microscopy setup, we have observed changes in the network structure of fused silica after modifying regions inside the glass with tightly focused 800-nm 130-fs laser pulses at fluences of 5-200 J cm-2. The Raman spectra show a large increase in the peaks at 490 and 605 cm-1, owing to 4- and 3-membered ring structures in the silica network, indicating that densification occurs after exposure to the femtosecond laser pulses. The results are consistent with the formation of a localized plasma by the laser pulse and a subsequent microexplosion inside the glass.

Original languageEnglish (US)
Pages (from-to)1726-1728
Number of pages3
JournalOptics Letters
Volume26
Issue number21
StatePublished - Nov 1 2001

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silicon dioxide
pulses
Raman spectra
lasers
glass
ring structures
densification
fluence
microscopy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Structural changes in fused silica after exposure to focused femtosecond laser pulses. / Chan, James W; Huser, Thomas R; Risbud, S.; Krol, D. M.

In: Optics Letters, Vol. 26, No. 21, 01.11.2001, p. 1726-1728.

Research output: Contribution to journalArticle

Chan, JW, Huser, TR, Risbud, S & Krol, DM 2001, 'Structural changes in fused silica after exposure to focused femtosecond laser pulses', Optics Letters, vol. 26, no. 21, pp. 1726-1728.
Chan, James W ; Huser, Thomas R ; Risbud, S. ; Krol, D. M. / Structural changes in fused silica after exposure to focused femtosecond laser pulses. In: Optics Letters. 2001 ; Vol. 26, No. 21. pp. 1726-1728.
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