Recoil momentum induced by laser ablation: risk for laser middle ear surgery?

Dirk H. Meyer; Hans-Jochen Foth

doi:10.1117/12.386272

17 May 2000 Recoil momentum induced by laser ablation: risk for laser middle ear surgery?

Dirk H. Meyer, Hans-Jochen Foth

Proceedings Volume 3907, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems X; (2000) https://doi.org/10.1117/12.386272
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States

Abstract

Laser ablated material escapes from the surface with high velocities up to the speed of sound. Due to the conservation of momentum, the same amount of momentum which is in the ablated material is also transferred to the remaining tissue. The effect of this recoil momentum is like a force which accelerates the tissue. In the case of the tiny middle ear bones, the acceleration may be so large that it harms structures of the inner ear. Laser Doppler vibrometry was used to measure the recoil momentum induced by infrared lasers like Holmium, Erbium and CO₂ laser. This paper focuses on the effect of repetitive laser pulses of a short pulse CO₂ laser.

Citation Download Citation

Dirk H. Meyer and Hans-Jochen Foth "Recoil momentum induced by laser ablation: risk for laser middle ear surgery?", Proc. SPIE 3907, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems X, (17 May 2000); https://doi.org/10.1117/12.386272

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