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Proceedings Paper

On a photonic density of states of cholesteric liquid crystal cells
Author(s): K. B. Oganesyan; A. H. Gevorgyan; A. N. Kocharian; G. A. Vardanyan; Yu. S. Chilingaryan; E. A. Santrosyan; Y. V. Rostovtsev
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Paper Abstract

The photonic densities of states (PDS) of the eigen polarizations (EPs) in a cholesteric liquid crystal (CLC) filled with the Fabry-Perot (FP) resonator are calculated. We obtained the dependences for the PDS on the FP resonator plates refractive indices. We showed, that the decrement and increment of the FP resonator plates refractive indices (started with the value, n = nm , where nm is the mean value of the CLC refractive index) lead to a sharp increase of the maximum PDS and, consequently, lead to a sharp decrement of the laser excitation threshold. The absorption and emission peculiarities of this system are investigated too. It is shown that the subject system can work as a low threshold laser.

Paper Details

Date Published: 7 October 2014
PDF: 10 pages
Proc. SPIE 9182, Liquid Crystals XVIII, 91821B (7 October 2014); doi: 10.1117/12.2061008
Show Author Affiliations
K. B. Oganesyan, Alikhanyan National Science Lab., Yerevan Physics Institute (Armenia)
A. H. Gevorgyan, Yerevan State Univ. (Armenia)
A. N. Kocharian, Nanoclusters, Nanomaterials and Nanoscience Inc. (United States)
California State Univ., Los Angeles (United States)
G. A. Vardanyan, Nanoclusters, Nanomaterials and Nanoscience Inc. (United States)
Yu. S. Chilingaryan, Yerevan State Univ. (Armenia)
E. A. Santrosyan, Yerevan State Univ. (Armenia)
Y. V. Rostovtsev, Univ. of North Texas (United States)

Published in SPIE Proceedings Vol. 9182:
Liquid Crystals XVIII
Iam Choon Khoo, Editor(s)

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