Study of absorption and reflection in solid-state random laser media.
Comparing the absorption spectrum of a single-crystalline material and the reflection spectrum of its powder, we have derived a simple empirical formula for the reflection coefficient of absorbing powder. The proposed equation, which slightly resembles the Lambert-Beer law for transmission, does not correspond to the equation derived in the approximation of a simple one-dimensional diffusion model.
Center for Materials Research, Norfolk State University, Norfolk, Virginia 23504, USA. mnoginov@nsu.edu
M A
MA
Noginov
Messaoud
M
Bahoura
Natalia
N
Noginova
Vladimir P
VP
Drachev