Document Detail


High-precision frequency-domain measurements of the optical properties of turbid media.
MedLine Citation:
PMID:  18073899     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We report high-precision measurements of the absorption and the reduced scattering coefficients for turbid media. Using a frequency-domain measurement technique for a point-source infinite-medium geometry, we find that the standard deviations of multiple measurements of the absorption coefficient mu(a) and the reduced scattering coefficient mu(s)(?) are less than 0.6%, and three independently derived values for mu(a) and mu(s)(?) agree to better than 1%. Measurements of mu(a) agree with measurements of a nonscattering medium to within 1.2%. To obtain high precision requires attention to proper conditions for the spherical photon-density wave model, the detection linearity, and the ratio of the absorption rate to the source modulation rate. Frequency-domain amplitude and phase measurements deviate from fitted curves by 0.1% and 0.06 degrees rms, respectively.
Authors:
M Gerken; G W Faris
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  24     ISSN:  0146-9592     ISO Abbreviation:  Opt Lett     Publication Date:  1999 Jul 
Date Detail:
Created Date:  2007-12-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  930-2     Citation Subset:  -    
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