13 May 1998 Characterization of tissue processing with a continuous-wave Tm:YAG laser at 2.06-μm wavelength
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Proceedings Volume 3254, Laser-Tissue Interaction IX; (1998) https://doi.org/10.1117/12.308171
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States
Abstract
Laser radiation in the mid infrared region is a promising tool for soft tissue processing due to its strong absorption in water. In this study, a cw Tm:YAG laser emitting at 2.06 micrometer was used for basic investigations. The laser has a maximum output power of more than 30 W. Fresh pig skin, liver and heart tissue were irradiated at different intensities (up to 65 kW/cm2) and irradiation times (400 ms to 20 s). As a delivery system a 400 micrometer quartz fiber was used in contact as well as in non-contact mode. The irradiated samples were examined by light and electron microscopy. The ablation efficiency on soft tissue was determined to about 0.3 mg/J. The thermal induced damage covered a region of 100 to 500 micrometers lateral and 500 to 1000 micrometers axial to the crater. With regard to its compact dimensions and high efficiency the cw Tm:YAG laser appears to be a promising alternative to the CO2 laser especially when fiber transmission of the radiation is required.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Holger Lubatschowski, Holger Lubatschowski, Michael Fiebig, Michael Fiebig, P. Fuhrberg, P. Fuhrberg, Heinrich O. Teichmann, Heinrich O. Teichmann, Herbert Welling, Herbert Welling, } "Characterization of tissue processing with a continuous-wave Tm:YAG laser at 2.06-μm wavelength", Proc. SPIE 3254, Laser-Tissue Interaction IX, (13 May 1998); doi: 10.1117/12.308171; https://doi.org/10.1117/12.308171
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