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Conferences > IQEC > 1992 > ThQ > ThQ5
  • XVIII International Quantum Electronics Conference
  • Technical Digest Series (Optica Publishing Group, 1992),
  • paper ThQ5

Characterisation of Acoustic Effects in Photoablation and its Possible Use for On-Line Control of Cutting Depths

H. Lubatschowski, G. Bräucker, T. Asshauer, W. Ertmer, and O. Kermani

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Abstract

Structure and dynamics of acoustic transients generated during photoablative tissue removal were investigated. The acoustic stress transients were caused by the recoil momentum of the ejected photofragments during photoablation. ArF excimer laser (λ= 193nm) and q-switched Er: YSGG (λ=2790nm) laser were used as a laser source. Corneal, dermal and dental tissue probes were fixed on piezoelectric transducers (PVDF-films) and irradiated with both lasers. PVDF-films (9µm thickness) were used as a detector for laser induced acoustic transients.

© 1992 IQEC

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