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Proceedings Paper

Fractional Er:YAG laser and its application in dermatology
Author(s): XiaoHong Fan; Zhengjia Li; Hai Zhou; YanYan He; HongXing Xia
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Paper Abstract

Fractional laser resurfacing technology is one of those medical advanced technologies. It has bridged the gap between ablative lasers and non-ablative lasers. Fractional laser resurfacing is a new laser skin treatment modality that creates numerous microscopic thermal injury zones with controlled width, depth and density. Those injury zones are surrounded by a reservoir of spared epidermal and dermal tissue that allow for rapid repair of laser-induced thermal injury. In this paper the ideal laser parameters, the damage depth and width, the relationship between the energy and the damage about fractional resurfacing and so on are analyzed. The results show: the Q-switch Er:YAG laser is an ideal lasers for fractional laser resurfacing, the dynamical equilibrium time of fractional resurfacing treating is depended on the energy, the damage area is only the evaporation zone with minimal residual heat, and the damage width and depth of the injury zone in fractional treating can be controlled precisely by the appropriate adjustment of the diameter, energy, pulse width and frequency of Er:YAG laser beam.

Paper Details

Date Published: 6 March 2009
PDF: 10 pages
Proc. SPIE 7280, Seventh International Conference on Photonics and Imaging in Biology and Medicine, 72800J (6 March 2009); doi: 10.1117/12.823359
Show Author Affiliations
XiaoHong Fan, Huazhong Univ. of Science and Technology (China)
Wuhan National Lab. for Optoelectronics (China)
Zhengjia Li, Huazhong Univ. of Science and Technology (China)
Wuhan National Lab. for Optoelectronics (China)
Hai Zhou, Huazhong Univ. of Science and Technology (China)
Wuhan National Lab. for Optoelectronics (China)
YanYan He, Huazhong Univ. of Science and Technology (China)
Wuhan National Lab. for Optoelectronics (China)
HongXing Xia, Huazhong Univ. of Science and Technology (China)
Wuhan National Lab. for Optoelectronics (China)


Published in SPIE Proceedings Vol. 7280:
Seventh International Conference on Photonics and Imaging in Biology and Medicine
Qingming Luo; Lihong V. Wang; Valery V. Tuchin, Editor(s)

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