Effects of tissue water content on the propagation of laser light during low-level laser therapy

Soogeun Kim, Sungho Shin, Sungho Jeong
2015 Journal of Biomedical Optics  
This work reports that the laser fluence rate inside porcine skin varied notably with the change of tissue water content under the same laser irradiation conditions. The laser fluence rate inside skin tissue samples with varying water content was measured using an optical fiber sensor, while the target was irradiated either by a low-level 635 or 830 nm laser (50 mW∕cm 2 ). It was demonstrated that the distribution of laser fluence rate inside the target is strongly affected by tissue water
more » ... y tissue water content and its profile is determined by the water content dependency of optical properties at the laser wavelength.
doi:10.1117/1.jbo.20.5.051027 pmid:25611979 fatcat:rouz3vaeynavxnsy5gyrfuixci