Abstract
In this study the absorption coefficient of water at different temperatures was investigated for wavelengths at 1920 nm and 1940 nm respectively. The laser radiation was transmitted via a quartz fibre (600 μm core) into a thermal isolated and heated water filled cuvette. At different temperatures the transmittance of water was measured for both wavelengths. According to Beer-Lambert's law the absorption coefficient α was calculated. Absorption coefficient α of water for 1940 nm decreases from 129.2±1.7 /cm2 @ 20 °C to 118.7±1.9 /cm2 @ 80 °C, while for 1920 nm α increases from 126.4±1.6 /cm2 @ 20 °C to 142.5±1.6 /cm2 @ 80 °C. For 35 °C the water absorption coefficient is 127.3±1.6 /cm2 for 1940 nm and 132.5±1.9 /cm2 for 1920 nm. For both wavelengths in vivo investigations for ablation efficiency are planned to answer the question, if these differences are significant for laser surgery.
Original language | English |
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Title of host publication | 4th European Conference of the International Federation for Medical and Biological Engineering |
Editors | Jos Vander Sloten, Pascal Verdonck, Marc Nyssen, Jens Haueisen |
Number of pages | 2 |
Volume | 22 |
Place of Publication | Berlin, Heidelberg |
Publisher | Springer-Verlag Berlin Heidelberg |
Publication date | 2008 |
Pages | 2228-2229 |
ISBN (Print) | 978-3-540-89207-6 |
ISBN (Electronic) | 978-3-540-89208-3 |
DOIs | |
Publication status | Published - 2008 |
Event | 4th European Conference of the International Federation for Medical and Biological Engineering - Antwerp, Belgium Duration: 23.11.2008 → 27.11.2008 Conference number: 81647 |
Research Areas and Centers
- Academic Focus: Biomedical Engineering