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

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

Journal Article (2020)

Author(s)

Hamed Abbasi (University of Basel)

Lina M. Beltrán Bernal (University of Basel)

Arsham Hamidi (University of Basel)

Antoine Droneau (Université Grenoble Alpes, University of Basel)

Ferda Canbaz (University of Basel)

Raphael Guzman (University Hospital Basel)

Steven L. Jacques (University of Washington)

Philippe C. Cattin (University of Basel)

Azhar Zam (University of Basel)

Affiliation

External organisation

DOI related publication

https://doi.org/10.1364/BOE.385862 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:ee01938b-1eb7-442f-b289-0f11ca20a310

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Publication Year

2020

Language

English

Affiliation

External organisation

Journal title

Biomedical Optics Express

Issue number

4

Volume number

11

Pages (from-to)

1790-1807

Downloads counter

226

Abstract

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.