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Er:YAG laser ablation of tissue: Measurement of ablation rates
Author(s) -
Walsh Joseph T.,
Deutsch Thomas F.
Publication year - 1989
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900090404
Subject(s) - ablation , laser ablation , laser , biomedical engineering , materials science , medicine , optics , physics
The ablation of both soft and hard tissue using the normal‐spiking‐mode Er:YAG laser has been quantified by measuring the number of pulses needed to perforate a measured thickness of tissue. Bone is readily ablated by 2.94 μm radiation; however, at per pulse fluences greater than 20 J/cm 2 , plasma formation decreases ablation efficiency. At low fluence, desiccation can prevent efficient ablation of bone. The ablation efficiency for aorta and skin is higher than for bone. The ablation efficiency, 540 μg/J, and the ablation depth per pulse, >400 μm, for skin are too high to be readily explained by simple models of ablation and thus provide evidence for a more complex explosive removal process.