Towards miniaturized OCT-guided laser osteotomy: integration of fiber-coupled Er:YAG laser with OCT

Arsham Hamidi, Yakub A. Bayhaqi, Alexander A. Navarini, Philippe C. Cattin, Azhar Zam, Ferda Canbaz

Research output: Contribution to journalArticlepeer-review

Abstract

Optical coherence tomography (OCT) combined with an ablative Er:YAG laser has been recognized as a promising technique for real-time monitoring and controlling the depth of laser-induced cuts during laser osteotomy procedures. In this study, a miniaturized OCT-assisted Er:YAG laser system was developed for controlled laser ablation of bone tissue. The developed system involved coupling a high-power Er:YAG laser into a sapphire fiber with a core diameter of 425 µm and miniaturizing the sample arm of a long-range swept-source OCT system. Controlled laser osteotomy experiments were performed to evaluate the performance of the miniaturized setup. Real-time depth monitoring and control were achieved through an optical shutter controlled by the OCT system. The experimental results showed controlled ablation with a mean accuracy of 0.028 mm when targeting depths of 1 mm, 3 mm, and 5 mm on cow femur bones. These results demonstrate the potential of the developed miniaturized OCT-assisted Er:YAG laser system for use in robotic-assisted minimally-invasive laser osteotomy.

Original languageEnglish (US)
Pages (from-to)2106-2115
Number of pages10
JournalOptics Continuum
Volume2
Issue number10
DOIs
StatePublished - 2023

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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