scholarly journals Extraordinary polarization rotation of vector beams with high-period-number chiral photonic crystals

2019 ◽  
Vol 44 (21) ◽  
pp. 5306
Author(s):  
Chun-Wei Chen ◽  
Iam Choon Khoo
Keyword(s):  
Photonic Crystals ◽  
Polarization Rotation ◽  
Chiral Photonic Crystals ◽  
Vector Beams

scholarly journals Optical vector field rotation and switching with near-unity transmission by fully developed chiral photonic crystals

2021 ◽  
Vol 118 (16) ◽  
pp. e2021304118
Author(s):  
Chun-Wei Chen ◽  
Iam Choon Khoo
Keyword(s):  
Photonic Crystals ◽  
Self Assembly ◽  
High Performance ◽  
Vector Fields ◽  
Continuous Wave ◽  
Rotatory Power ◽  
Polarization Rotation ◽  
Chiral Photonic Crystals ◽  
Unit Cells ◽  
Size Interaction

State-of-the-art nanostructured chiral photonic crystals (CPCs), metamaterials, and metasurfaces have shown giant optical rotatory power but are generally passive and beset with large optical losses and with inadequate performance due to limited size/interaction length and narrow operation bandwidth. In this work, we demonstrate by detailed theoretical modeling and experiments that a fully developed CPC, one for which the number of unit cells N is high enough that it acquires the full potentials of an ideal (N → ∞) crystal, will overcome the aforementioned limitations, leading to a new generation of versatile high-performance polarization manipulation optics. Such high-N CPCs are realized by field-assisted self-assembly of cholesteric liquid crystals to unprecedented thicknesses not possible with any other means. Characterization studies show that high-N CPCs exhibit broad transmission maxima accompanied by giant rotatory power, thereby enabling large (>π) polarization rotation with near-unity transmission over a large operation bandwidth. Polarization rotation is demonstrated to be independent of input polarization orientation and applies equally well on continuous-wave or ultrafast (picosecond to femtosecond) pulsed lasers of simple or complex (radial, azimuthal) vector fields. Liquid crystal–based CPCs also allow very wide tuning of the operation spectral range and dynamic polarization switching and control possibilities by virtue of several stimuli-induced index or birefringence changing mechanisms.

Zak phases of chiral photonic crystals designed via transformation optics

2021 ◽  
Vol 104 (6) ◽  
Author(s):  
Ting Wai Lau ◽  
Yong-liang Zhang ◽  
Kin Hung Fung
Keyword(s):  
Photonic Crystals ◽  
Transformation Optics ◽  
Chiral Photonic Crystals

Circularly-Polarized Light Emission from Semiconductor Planar Chiral Photonic Crystals

2010 ◽  
Author(s):  
Kuniaki Konishi ◽  
Masahiro Nomura ◽  
Naoto Kumagai ◽  
Satoshi Iwamoto ◽  
Yasuhiko Arakawa ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Light Emission ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Chiral Photonic Crystals

3D Bi-chiral Photonic Crystals: Three-Dimensional Bi-Chiral Photonic Crystals (Adv. Mater. 46/2009)

2009 ◽  
Vol 21 (46) ◽  
pp. n/a-n/a ◽  
Author(s):  
Michael Thiel ◽  
Michael S. Rill ◽  
Georg von Freymann ◽  
Martin Wegener
Keyword(s):  
Photonic Crystals ◽  
Three Dimensional ◽  
Chiral Photonic Crystals
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