One of many photonic applications of biopolymers as functional materials is random lasing resulting from an
incorporation of highly luminescent dyes into biopolymeric matrix, which leads to a random but coherent light
scattering in amplifying medium. In spite of numerous theoretical and experimental studies the origin of the
coherence is still not clear and various scenarios are discussed. In particular, inhomogeneity of biopolymeric
layers can hypothetically promote the feedback in the scattering of the emitted light resulting in coherent and
incoherent random lasing. In this paper we analyze the light scattering in a model system of scattering centers
of circular shapes and various dimensions using ray-tracing techniques. In the second part, which has mostly a
tutorial character, we present the approach to the study of random lasing using a cellular automaton model of
Wiersma et al.
A. C. Mitus, P. Stopa, W. Zaklukiewicz, G. Pawlik, J. Mysliwiec, F. Kajzar, and I. Rau, "Towards modeling of random lasing in dye doped bio-organic based systems: ray-tracing and cellular automaton analysis," Proc. SPIE 9557, Nanobiosystems: Processing, Characterization, and Applications VIII, 95570H (Presented at SPIE Nanoscience + Engineering: August 11, 2015; Published: 26 August 2015); https://doi.org/10.1117/12.2189994.
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