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Erschienen in:
1988 | OriginalPaper | Buchkapitel
Effect of Nd: YAG Laser at 1.44 µm on Rabbit Brain
verfasst von : R. Martiniuk, J. D. S. McKean, J. Tulip, B. W. Mielke, J. Bauer
Erschienen in: LASER Optoelectronics in Medicine
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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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.