Pulsed laser ablation: influence of the repetition rate on the efficiency and the thermal stress

Dirk Meyer

doi:10.1117/12.2283884

29 August 2017 Pulsed laser ablation: influence of the repetition rate on the efficiency and the thermal stress

Dirk Meyer

Proceedings Volume 10313, Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging; 103132G (2017) https://doi.org/10.1117/12.2283884
Event: Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging, 2002, Ottawa, Ontario, Canada

Abstract

Laser induced ablation is widely used for the removal of tissue. The advantage is seen in minimising the stress on the remaining tissue. However the picture that all irradiated light energy is converted into energy for the phase transition from solid to vapour is too simple. The crater bottom and the side walls are heated, and it is a question of relaxation time, heat conductivity and heat capacity which determines the degree of thermal damage. Furthermore the optical penetration depth, the pulse duration and the repetition rate determine the thickness of the thermal influenced zone. This presentation reports on the influence of the repetition rate of CO2 laser radiation with a pulse length oft = 80 'is on the efficiency of ablation and the thickness of the thermal damage.

Citation Download Citation

Dirk Meyer "Pulsed laser ablation: influence of the repetition rate on the efficiency and the thermal stress", Proc. SPIE 10313, Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging, 103132G (29 August 2017); https://doi.org/10.1117/12.2283884

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