Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Vardeny, Zeev Valentine; Raikh, Mikhail E. |
Other Author |
Eradat, N.; Sivachenko, A. Yu; Zakhidov, A. A.; Baughman, R. H. |
Title |
Excitations in opal photonic crystals infiltrated with polarizable media |
Date |
2002 |
Description |
Photonic crystals (PC) are a class of artificial structures with a periodic dielectric function. PCs can be a laboratory for testing fundamental processes involving interactions of radiation with matter in novel conditions. We have studied the optical properties of opal PCs that are infiltrated with highly polarizable media such as J-aggregates of cyanine dyes. Opals are self-assembled structures of silica (Si02) spheres. We report our studies on clarifying the relationship between a polaritonic gap and a photonic stop band (Bragg gap) when they resonantly coexist in the same structure. Infiltration of opal with polarizable molecules combines the polaritonic and Bragg diffractive effects. Both effects exist independently when the Bragg (at ω = ωB) and polaritonic (at ω = ωT) resonances are well separated in frequency. A completely different situation occurs when ωT ~ ωB- Such a condition was achieved in opals that were infiltrated with J-aggregates of cyanine dyes that have large Rabi frequency. Our measurements show some dramatic changes in the shape of the reflectivity plateaus, which are due to the interplay between the photonic band gap and the polaritonic gap. The experimental results on reflectivity and its dependence on the light propagation angle and concentration of the cyanine dyes are in agreement with the theoretical calculations. |
Type |
Text |
Publisher |
International Society for Optical Engineering (SPIE) |
Volume |
4798 |
First Page |
173 |
Last Page |
183 |
DOI |
10.1117/12.458241 |
citatation_issn |
0277786X |
Subject |
Opal photonic crystals; Polarizable media; Bragg gap; Polaritonic gap; Photonic stop band |
Subject LCSH |
Photonic crystals; Photonic crystals -- Optical properties; Electronic excitation; Opals -- Optical properties |
Language |
eng |
Conference Title |
Linear and Nonlinear Optics of Organic Materials II; Wednesday 10 July 2002; Seattle, WA, USA |
Bibliographic Citation |
Eradat, N., Sivachenko, A. Y., Raikh, M. E., Vardeny, Z. V., Zakhidov, A. A., & Baughman, R. H. (2002). Excitations in opal photonic crystals infiltrated with polarizable media, in Linear and Nonlinear Optics of Organic Materials II, edited by Manfred Eich and Mark G. Kuzyk. Proceedings of SPIE, 4798, 173-83. |
Rights Management |
(c)Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.458241 |
Format Medium |
application/pdf |
Format Extent |
592,123 bytes |
Identifier |
ir-main,10034 |
ARK |
ark:/87278/s6611hh1 |
Setname |
ir_uspace |
ID |
703711 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6611hh1 |