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Combined absorption of light in the process of photoactivation of biosystems

  • Stanislav D. Zakharov
  • Nguyen Cong Thanh
Article

Abstract

The light-oxygen effect consists in a direct excitation of molecular oxygen dissolved in aqueous media of biosystems by the light; it provides the possibility to use lasers for therapeutic purposes. The wavelength of the used light should strictly correspond to the oxygen absorption bands. However, laser therapy also makes use of lasers emitting at 0.89 µm (outside the known oxygen bands), which suggests the action of a new photoreceptor. Here we argue that this mechanism of photoreception is a modification of the light-oxygen effect involving the absorption of photon simultaneously by the oxygen molecule and O-H stretch of the H20 molecule of liquid water.

Keywords

light-oxygen effect low-level laser therapy photoexcitation spectrum singlet oxygen water vibrational modes 

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Copyright information

© Springer Science+Business Media, Inc. 2008

Authors and Affiliations

  1. 1.P. N. Lebedev Physical InstituteRussian Academy of SciencesMoscowRussia
  2. 2.Institute of PhysicsVietnamese Academy of Sciences and TechnologiesHanoiVietnam

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