Abstract
Laser vaporizatior of tissue is highly dependent upon the wavelength of the applied radiation. In the pear infrared, absorption is dominated by the water content of tissue. There is a large variance of the absorption spectrum of water over a relatively small range of radiation wavelength (Fig. 1). Consequently, a small change in the operating wavelength of an infrared laser will dramatically influence tissue response. Several laser emission wavelengths and their corresponding absorption coefficients in water are shown in Fig. 2. The absorption coefficient increases from approximately 2 cm-1 at the Nd:YAG wavelength of 1.32 µm to 30 cm-1 at 1.44 µm. This study was undertaken to quantify some of the differences in laser interaction with brain tissue at 1.06 µm and 1.44 µm.
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References
Zuev, V.E.: Propagation of Visible and Infrared Radiation in the Atmosphere, Appendix 2, pp 371–375, John Wiley & Sons, Ltd., Chichester, 1974.
Handbook of Marine Sciences, Vol. 1, F.G.W. Smith, ed. Table 3.2–5, Absorption of Radiation by Pure Liquid Water, CRC Press, Cleveland, Ohio, 1974.
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© 1988 Springer-Verlag Berlin, Heidelberg
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Martiniuk, R., McKean, J.D.S., Tulip, J., Mielke, B.W., Bauer, J. (1988). Effect of Nd: YAG Laser at 1.44 µm on Rabbit Brain. In: Waidelich, W., Waidelich, R. (eds) LASER Optoelectronics in Medicine. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-72870-9_25
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DOI: https://doi.org/10.1007/978-3-642-72870-9_25
Publisher Name: Springer, Berlin, Heidelberg
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