Nonpolar second-order nonlinear and electrooptic materials: Axially ordered chiral polymers and liquid crystals

2003 ◽  
Vol 41 (21) ◽  
pp. 2744-2754 ◽  
Author(s):  
Kenneth D. Singer ◽  
Rolfe G. Petschek ◽  
Victor Ostroverkhov ◽  
Robert J. Twieg ◽  
Ludmilla Sukhomlinova
Keyword(s):  
Liquid Crystals ◽  
Second Order ◽  
Chiral Polymers

Second-order NLO response in chiral ferroelectric liquid crystals: Molecular and bulk consideration

2021 ◽  
pp. 115328
Author(s):  
Stijn van Cleuvenbergen ◽  
Griet Depotter ◽  
Koen Clays ◽  
Przemysław Kędziora
Keyword(s):  
Liquid Crystals ◽  
Second Order ◽  
Ferroelectric Liquid Crystals ◽  
Nlo Response

Liquid Crystals fromC3-Symmetric Mesogens for Second-Order Nonlinear Optics

2006 ◽  
Vol 45 (25) ◽  
pp. 4203-4206 ◽  
Author(s):  
Gunther Hennrich ◽  
Ana Omenat ◽  
Inge Asselberghs ◽  
Stijn Foerier ◽  
Koen Clays ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nonlinear Optics ◽  
Second Order

Temperature dependence of the second-order susceptibility in calamitic ferroelectric liquid crystals

1998 ◽  
Vol 24 (3) ◽  
pp. 451-456 ◽  
Author(s):  
N. PEREDA ◽  
C. L. FOLCIA ◽  
J. ETXEBARRIA ◽  
J. ORTEGA ◽  
M. B. ROS
Keyword(s):  
Liquid Crystals ◽  
Temperature Dependence ◽  
Second Order ◽  
Ferroelectric Liquid Crystals ◽  
Order Susceptibility

scholarly journals Localized Conical Edge Modes of Higher Orders in Photonic Liquid Crystals

Crystals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 542 ◽  
Author(s):  
Vladimir A. Belyakov ◽  
Sergei V. Semenov
Keyword(s):  
Liquid Crystals ◽  
Maxwell Equations ◽  
Analytic Solution ◽  
Second Order ◽  
Experimental Results ◽  
Analytical Theory ◽  
Exact Analytic Solution ◽  
Localized Modes ◽  
First Order ◽  
Order Diffraction

Most studies of the localized edge (EM) and defect (DM) modes in cholesteric liquid crystals (CLC) are related to the localized modes in a collinear geometry, i.e., for the case of light propagation along the spiral axis. It is due to the fact that all photonic effects in CLC are most pronounced just for a collinear geometry, and also partially due to the fact that a simple exact analytic solution of the Maxwell equations is known for a collinear geometry, whereas for a non-collinear geometry, there is no exact analytic solution of the Maxwell equations and a theoretical description of the experimental data becomes more complicated. It is why in papers related to the localized modes in CLC for a non-collinear geometry and observing phenomena similar to the case of a collinear geometry, their interpretation is not so clear. Recently, an analytical theory of the conical modes (CEM) related to a first order of light diffraction was developed in the framework of the two-wave dynamic diffraction theory approximation ensuring the results accuracy of order of δ, the CLC dielectric anisotropy. The corresponding experimental results are reasonably well described by this theory, however, some numerical problems related to the CEM polarization properties remain. In the present paper, an analytical theory of a second order diffraction CEM is presented with results that are qualitatively similar to the results for a first order diffraction order CEM and have the accuracy of order of δ2, i.e., practically exact. In particular, second order diffraction CEM polarization properties are related to the linear σ and π polarizations. The known experimental results on the CEM are discussed and optimal conditions for the second order diffraction CEM observations are formulated.

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