Characterization of polarization aberrations in liquid crystal devices

2003 ◽  
Author(s):  
Justin Wolfe ◽  
Russell Chipman
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Devices

scholarly journals Characterization of large tilt-angle flexoelectro-optic switching in chiral nematic liquid crystal devices

2018 ◽  
Vol 46 (3) ◽  
pp. 408-414 ◽  
Author(s):  
Xiuze Wang ◽  
Julian A. J. Fells ◽  
Chris Welch ◽  
Maria-Gabriela Tamba ◽  
Georg H. Mehl ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Tilt Angle ◽  
Liquid Crystal Devices ◽  
Chiral Nematic

Complex modulation characterization of liquid crystal devices by interferometric data correlation

1997 ◽  
Vol 8 (7) ◽  
pp. 764-772 ◽  
Author(s):  
E Martín-Badosa ◽  
A Carnicer ◽  
I Juvells ◽  
S Vallmitjana
Keyword(s):  
Liquid Crystal ◽  
Data Correlation ◽  
Liquid Crystal Devices ◽  
Complex Modulation

Unitary matrix approach for a precise voltage dependent characterization of reflective liquid crystal devices by average Stokes polarimetry

2020 ◽  
Vol 45 (20) ◽  
pp. 5732
Author(s):  
Andrés Márquez ◽  
Francisco J. Martínez-Guardiola ◽  
Jorge Francés ◽  
Eva M. Calzado ◽  
Daniel Puerto ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Unitary Matrix ◽  
Matrix Approach ◽  
Liquid Crystal Devices ◽  
Voltage Dependent ◽  
Stokes Polarimetry

scholarly journals Azimuthal Anchoring Strength in Photopatterned Alignment of a Nematic

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 675
Author(s):  
H. Nilanthi Padmini ◽  
Mojtaba Rajabi ◽  
Sergij V. Shiyanovskii ◽  
Oleg D. Lavrentovich
Keyword(s):  
Liquid Crystal ◽  
Point Defects ◽  
Elastic Energy ◽  
Separation Distance ◽  
Thin Layers ◽  
Uv Exposure ◽  
Surface Anchoring ◽  
Anchoring Strength ◽  
Spatially Varying

Spatially-varying director fields have become an important part of research and development in liquid crystals. Characterization of the anchoring strength associated with a spatially-varying director is difficult, since the methods developed for a uniform alignment are seldom applicable. Here we characterize the strength of azimuthal surface anchoring produced by the photoalignment technique based on plasmonic metamsaks. The measurements used photopatterned arrays of topological point defects of strength +1 and −1 in thin layers of a nematic liquid crystal. The integer-strength defects split into pairs of half-integer defects with lower elastic energy. The separation distance between the split pair is limited by the azimuthal surface anchoring, which allows one to determine the strength of the latter. The strength of the azimuthal anchoring is proportional to the UV exposure time during the photoalignment of the azobenzene layer.

scholarly journals Liquid Crystal Devices for Beam Steering Applications

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 247
Author(s):  
Rowan Morris ◽  
Cliff Jones ◽  
Mamatha Nagaraj
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Adaptive Optics ◽  
Beam Steering ◽  
Optical Components ◽  
Advantages And Disadvantages ◽  
Liquid Crystal Devices

Liquid crystals are valuable materials for applications in beam steering devices. In this paper, an overview of the use of liquid crystals in the field of adaptive optics specifically for beam steering and lensing devices is presented. The paper introduces the properties of liquid crystals that have made them useful in this field followed by a more detailed discussion of specific liquid crystal devices that act as switchable optical components of refractive and diffractive types. The relative advantages and disadvantages of the different devices and techniques are summarised.

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