Combined Nd:YAG and Er:YAG lasers for real-time closed-loop tissue-specific laser osteotomy

Hamed Abbasi, Lina M. Beltrán Bernal, Arsham Hamidi, Antoine Droneau, Ferda Canbaz, Raphael Guzman, Steven L. Jacques, Philippe C. Cattin, Azhar Zam

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)
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A novel real-time and non-destructive method for differentiating soft from hard tissue in laser osteotomy has been introduced and tested in a closed-loop fashion. Two laser beams were combined: a low energy frequency-doubled nanosecond Nd:YAG for detecting the type of tissue, and a high energy microsecond Er:YAG for ablating bone. The working principle is based on adjusting the energy of the Nd:YAG laser until it is low enough to create a microplasma in the hard tissue only (different energies are required to create plasma in different tissue types). Analyzing the light emitted from the generated microplasma enables real-time feedback to a shutter that prevents the Er:YAG laser from ablating the soft tissue.

Original languageEnglish
Pages (from-to)1790-1807
Number of pages18
JournalBiomedical Optics Express
Issue number4
Publication statusPublished - 1 Apr 2020
Externally publishedYes

Bibliographical note

Funding Information:
Werner Siemens Foundation through the Minimally Invasive Robot-Assisted Computer-guided LaserosteotomE (MIRACLE) project.

Publisher Copyright:
© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement


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