On a photonic density of states of cholesteric liquid crystal cells

K. B. Oganesyan; A. H. Gevorgyan; A. N. Kocharian; G. A. Vardanyan; Yu. S. Chilingaryan; E. A. Santrosyan; Y. V. Rostovtsev

doi:10.1117/12.2061008

7 October 2014 On a photonic density of states of cholesteric liquid crystal cells

K. B. Oganesyan, A. H. Gevorgyan, A. N. Kocharian, G. A. Vardanyan, Yu. S. Chilingaryan, E. A. Santrosyan, Y. V. Rostovtsev

Author Affiliations +

Proceedings Volume 9182, Liquid Crystals XVIII; 91821B (2014) https://doi.org/10.1117/12.2061008
Event: SPIE Organic Photonics + Electronics, 2014, San Diego, California, United States

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 = n_m , where n_m 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.

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K. B. Oganesyan, A. H. Gevorgyan, A. N. Kocharian, G. A. Vardanyan, Yu. S. Chilingaryan, E. A. Santrosyan, and Y. V. Rostovtsev "On a photonic density of states of cholesteric liquid crystal cells", Proc. SPIE 9182, Liquid Crystals XVIII, 91821B (7 October 2014); https://doi.org/10.1117/12.2061008

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