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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper THF5

Laser-tissue interaction: cutting by pulsed 2.94-µm radiation

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Abstract

Ablation of tissue by 2.94-μm radiation emerging from a free-running Er:YAG laser has been studied. By focusing single pulses of 250-μs duration and up to 250-mJ energy onto surfaces of various targets, holes have been created. Their depth and diameter have been measured at various moments during the drilling process. As target materials we used gelatin samples with different water content. Gelatin, a homogeneous transparent substance of variable elasticity consisting of water and proteins, was looked on as a tissue substitute, its transparency allowed time-resolved investigations of the drilling process by high-speed photography. The results were compared to drilling in tissue.

© 1988 Optical Society of America

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