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Optics Letters

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  • Vol. 36, Iss. 20 — Oct. 15, 2011
  • pp: 4041–4043

Comparison between radiative transfer theory and the simplified spherical harmonics approximation for a semi-infinite geometry

André Liemert and Alwin Kienle  »View Author Affiliations


Optics Letters, Vol. 36, Issue 20, pp. 4041-4043 (2011)
http://dx.doi.org/10.1364/OL.36.004041


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Abstract

In this study, the third-order simplified spherical harmonics equations ( SP 3 ), an approximation of the radiative transfer equation, are solved for a semi-infinite geometry considering the exact simplified spherical harmonics boundary conditions. The obtained Green’s function is compared to radiative transfer calculations and the diffusion theory. In general, it is shown that the SP 3 equations provide better results than the diffusion approximation in media with high absorption coefficient values but no improvement is found for small distances to the source.

© 2011 Optical Society of America

OCIS Codes
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(290.1990) Scattering : Diffusion
(290.7050) Scattering : Turbid media
(010.5620) Atmospheric and oceanic optics : Radiative transfer

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: July 21, 2011
Revised Manuscript: August 22, 2011
Manuscript Accepted: September 6, 2011
Published: October 11, 2011

Virtual Issues
Vol. 6, Iss. 11 Virtual Journal for Biomedical Optics

Citation
André Liemert and Alwin Kienle, "Comparison between radiative transfer theory and the simplified spherical harmonics approximation for a semi-infinite geometry," Opt. Lett. 36, 4041-4043 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-20-4041

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