Optically controllable photonic crystals and passively tunable terahertz metamaterials using dye-doped liquid crystal cells

2018 ◽  
Vol 6 (18) ◽  
pp. 4959-4966 ◽  
Author(s):  
Chia-Rong Lee ◽  
Shih-Hung Lin ◽  
Sheng-Min Wang ◽  
Jia-De Lin ◽  
Yu-Shao Chen ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystals ◽  
One Dimensional ◽  
Crystal Cells ◽  
Terahertz Metamaterials

This work fabricates a fishnet grating by exerting two one-dimensional (1D) holographic interference fields with mutually orthogonal grating vectors separately on the substrates of a dye-doped liquid crystal (DDLC) cell.

Tuned switching of surface waves by a liquid crystal cap layer in one-dimensional photonic crystals

2012 ◽  
Vol 51 (15) ◽  
pp. 2909 ◽  
Author(s):  
Hodjat Hajian ◽  
Behrooz Rezaei ◽  
Ali Soltani Vala ◽  
Manoochehr Kalafi
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystals ◽  
Surface Waves ◽  
One Dimensional ◽  
Cap Layer

Continuously tunable and fast-response terahertz metamaterials using in-plane-switching dual-frequency liquid crystal cells

2015 ◽  
Vol 40 (9) ◽  
pp. 2021 ◽  
Author(s):  
Chia-Chun Chen ◽  
Wei-Fan Chiang ◽  
Min-Cheng Tsai ◽  
Shun-An Jiang ◽  
Tsung-Hao Chang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Fast Response ◽  
Dual Frequency ◽  
Crystal Cells ◽  
Terahertz Metamaterials

scholarly journals Photochemical On–Off Switching of One-Dimensional Photonic Crystals Consisting of Azo-Functionalized Liquid Crystal Polymer and Polyvinyl Alcohol

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 610 ◽  
Author(s):  
Sunnam Kim ◽  
Seiji Kurihara
Keyword(s):  
Phase Transition ◽  
Refractive Index ◽  
Liquid Crystal ◽  
Photonic Crystals ◽  
Polyvinyl Alcohol ◽  
Refractive Index Change ◽  
Liquid Crystal Polymer ◽  
Index Change ◽  
One Dimensional ◽  
Crystal Polymer

One-dimensional (1D) photonic crystals (PCs) are prepared from multi-bilayered films stacked with alternating azo-functionalized liquid crystal polymer (PAz) films and polyvinyl alcohol (PVA) films. Reflection with a wavelength that depends on the thickness of the films is observed, and the reflection can be turned on and off by switching between the two states, based on whether there is a difference in the refractive index between the two films. The refractive index change of PAz can be photochemically caused by a phase transition, based on the alignment states of the liquid crystal (LC). In this review, we focused on an effective photo-induced on–off switching approach in 1D PCs using LC properties and described the basic optical and chemical principles, the experimental results, and further optimizations.

Tunable Fabry–Pérot filter based on one-dimensional photonic crystals with liquid crystal components

2009 ◽  
Vol 282 (6) ◽  
pp. 1220-1225 ◽  
Author(s):  
J. Cos ◽  
J. Ferre-Borrull ◽  
J. Pallares ◽  
L.F. Marsal
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystals ◽  
One Dimensional ◽  
Fabry Perot
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