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Influence of water environment on holmium laser ablation performance for hard tissues |
Applied Optics, Vol. 51, Issue 13, pp. 2505-2514 (2012)
http://dx.doi.org/10.1364/AO.51.002505
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Abstract
This study clarifies the ablation differences in air and in water for hard biological tissues, which are irradiated by fiber-guided long-pulsed holmium lasers. High-speed photography is used to record the dynamic characteristics of ablation plumes and vaporization bubbles induced by pulsed holmium lasers. The ablation morphologies and depth of hard tissues are quantitatively measured by optical coherence microscopy. Explosive vaporization effects in water play a positive role in the contact ablation process and are directly responsible for significant ablation enhancement. Furthermore, water layer depth can also contribute to ablation performance. Under the same laser parameters for fiber-tissue contact ablation in air and water, ablation performances are comparable for a single-laser pulse, but for more laser pulses the ablation performances in water are better than those in air. Comprehensive knowledge of ablation differences under various environments is important, especially in medical procedures that are performed in a liquid environment.
© 2012 Optical Society of America
OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(170.1020) Medical optics and biotechnology : Ablation of tissue
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: November 21, 2011
Revised Manuscript: January 21, 2012
Manuscript Accepted: January 31, 2012
Published: May 1, 2012
Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics
Citation
Tao Lü, Qing Xiao, and Zhengjia Li, "Influence of water environment on holmium laser ablation performance for hard tissues," Appl. Opt. 51, 2505-2514 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-51-13-2505
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