Laser light propagation in a turbid medium: solution including multiple scattering effects

We have shown that solutions to the radiative transfer equation for a homogeneous slab yield a zenith radiance reflectance that for collimated beam incidence in the nadir direction can be expressed in terms of the lidar ratio, defined as the extinction coefficient divided by the 180 ∘ backscattering...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2023-06, Vol.77 (6), Article 110
Main Authors: Stamnes, Knut, Li, Wei, Stamnes, Snorre, Hu, Yong, Zhou, Yingzhen, Chen, Nan, Fan, Yongzhen, Hamre, Børge, Lu, Xiaomei, Huang, Yuping, Weimer, Carl, Lee, Jennifer, Zeng, Xubin, Stamnes, Jakob
Format: Article
Language:English
Subjects:
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Backscattering
Beams (radiation)
Coefficients
Continuous radiation
Electron-Driven Processes from Single Collisions to High-Pressure Plasmas
Lidar
Molecular
Multiple scatter
Optical and Plasma Physics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Information Technology
Quantum Physics
Radiative transfer
Regular Article – Optical Phenomena and Photonics
Spectroscopy/Spectrometry
Spintronics
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Summary:We have shown that solutions to the radiative transfer equation for a homogeneous slab yield a zenith radiance reflectance that for collimated beam incidence in the nadir direction can be expressed in terms of the lidar ratio, defined as the extinction coefficient divided by the 180 ∘ backscattering coefficient. The recently developed QlblC method, which allows one to quantify layer-by-layer contributions to radiances emerging from a slab illuminated with a collimated beam of radiation, was used to show explicitly that in the single-scattering approximation the attenuated backscatter coefficient estimated by the new QlblC method gives the same result as the lidar equation. Originally developed for the continuous wave (CW) lidar problem, we have extended the new QlblC method to apply to the pulsed lidar problem. A specific example is provided to illustrate the challenge encountered for ocean property retrievals from space observations due to the fact that a very significant fraction of the signal is due to aerosol scattering/absorption; typically only about 10% (or less) comes from the ocean. Graphical abstract
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/s10053-023-00694-6