Photonic Density of States of a Stack of Cholesteric Liquid Crystal and Isotropic Medium Layers

We calculated the photonic density of states (PDS) of the eigen polarizations in the system composed of a stack of layers of a cholesteric liquid crystal and an isotropic medium. The reflection spectra and PDS peculiarities, as well as the peculiarities of absorption and emittance were investigated....

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 517; no. 1; pp. 12034 - 7
Main Authors Gevorgyan, A H, Harutyunyan, M Z, Matinyan, G K, Mkhitaryan, S A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2014
Subjects
Absorption
Cholesteric liquid crystals
Crystals
Density of states
Emittance
Isotropic media
Lasers
Mathematical analysis
Photonic crystals
Photonics
Physics
Spectral emittance
Stacks
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Summary:We calculated the photonic density of states (PDS) of the eigen polarizations in the system composed of a stack of layers of a cholesteric liquid crystal and an isotropic medium. The reflection spectra and PDS peculiarities, as well as the peculiarities of absorption and emittance were investigated. We obtained the dependences of the PDS as a function of parameters characterizing absorption and gain. It was shown that the subject system can be used in lasers for obtaining low threshold lasers with the emittance wavelength tunable in wide ranges. The system also can work as a multi-position trigger.
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ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/517/1/012034