Abstract
It is well known that a thick scattering medium (e.g. a slab of paint) is opaque since incident waves are thoroughly scrambled [1,2]. In the diffusive transport regime, the scattered light has an (ensemble-averaged) energy density that linearly increases with depth from the front surface to about one mean free path ℓ, and then decreases linearly with depth to the back surface. Two main questions arise: (A) Can one increase (or decrease) the energy density? (B) What is the new position-dependence? Answers to these questions are crucial for light-matter interactions with applications to white LEDs, random lasers, solar cells, and biomedical optics.
© 2017 IEEE
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