Erbium laser ablation: The effect of dynamic optical properties

Joseph P. Cummings*, Joseph T. Walsh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


Ablation characteristics of Q-switched Er:YAG (λ=2.94 μm) and Er:YSGG (λ=2.79 μm) lasers have been compared. For equivalent fluences per pulse, the Er:YAG laser radiation cuts deeper craters into a tissue phantom than the Er:YSGG laser radiation. The Er:YAG laser irradiation created lower plume velocities than Er:YSGG laser irradiation. The data have been interpreted in terms of a dynamically changing absorption coefficient model and suggest that, in contradistinction to low-intensity water absorption spectra, the effective absorption coefficient during ablation is greater at 2.79 than at 2.94 μm.

Original languageEnglish (US)
Pages (from-to)1988-1990
Number of pages3
JournalApplied Physics Letters
Issue number16
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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