Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Material Gain Concentration Quenching in Organic Dye-Doped Polymer Thin
  Films   The optimization of material gain in optically pumped dye-doped polymer thin
films is an important task in the development of organic solid-state lasers. In
this work, we present a theoretical model that accommodates the influence of
concentration quenching on material gain and employ it to study the novel dye
molecule 2-(4-(bis(4-(tert-butyl)phenyl)amino)benzylidene)malononitrile (PMN)
and the well-established dye molecule
4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM) embedded
in poly(methyl methacrylate) (PMMA). Polycarbonate was tested as an alternative
host material for PMN. The material gain in these dye-doped polymer thin films
was determined by the variable stripe length method. The inclusion of
concentration quenching in the material gain expression is able to
significantly reduce the overestimation of the gain efficiency inherent to a
linear model.

11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas