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Optical properties and photonic density of states in one-dimensional and three-dimensional liquid-crystalline photonic crystals
Authors:P. V. Dolganov  K. D. Baklanova  V. K. Dolganov
Affiliation:1. Institute of Solid State Physics RAS , Chernogolovka, Moscow Region, Russia pauldol@issp.ac.ru;3. Institute of Solid State Physics RAS , Chernogolovka, Moscow Region, Russia;4. Higher School of Economics, National Research University , Moscow, Russia;5. Institute of Solid State Physics RAS , Chernogolovka, Moscow Region, Russia
Abstract:ABSTRACT

Complex optical investigations were performed in one-dimensional (cholesteric) and three-dimensional (Blue Phase II) liquid-crystalline photonic crystals. Spectra of optical transmission and luminescence in the range of the photonic stop band contain information about the local anisotropy, characteristics of the photonic stop band, photonic density of states. We determine the photonic density of states in one-dimensional and three-dimensional liquid-crystalline photonic crystals employing measurements of polarised luminescence. The width of the photonic band gap, density of states and the optical characteristics related to the density of states essentially change with temperature in one-dimensional cholesteric photonic crystal. Drastic transformation of the density of states was found at the transition from one-dimensional to three-dimensional (Blue Phase II) photonic crystal. The results of our investigations demonstrate the possibility to employ the applied method for various types of photonic structures.
Keywords:Cholesteric  blue phases  photonic density of states  luminescence  orientational order parameter
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