High-Damage-Threshold Beam Shaping Using Optically Patterned Liquid Crystal Devices

2012 ◽  
Author(s):  
C. Dorrer ◽  
K. L. Marshall ◽  
S. H. Chen ◽  
M. Vargas ◽  
M. Statt ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Damage Threshold ◽  
Beam Shaping ◽  
Liquid Crystal Devices

High-damage-threshold static laser beam shaping using optically patterned liquid-crystal devices

2011 ◽  
Vol 36 (20) ◽  
pp. 4035 ◽  
Author(s):  
C. Dorrer ◽  
S. K.-H. Wei ◽  
P. Leung ◽  
M. Vargas ◽  
K. Wegman ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Laser Beam ◽  
Damage Threshold ◽  
Beam Shaping ◽  
Laser Beam Shaping ◽  
Liquid Crystal Devices

scholarly journals High damage threshold liquid crystal binary mask for laser beam shaping

2019 ◽  
Vol 7 ◽  
Author(s):  
Gang Xia ◽  
Wei Fan ◽  
Dajie Huang ◽  
He Cheng ◽  
Jiangtao Guo ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Laser Beam ◽  
Metal Layer ◽  
Damage Threshold ◽  
Beam Shaping ◽  
Spatial Light Modulators ◽  
Binary Mask ◽  
Light Modulators ◽  
New Type ◽  
Multiple Shot

In order to improve the damage threshold and enlarge the aperture of a laser beam shaper, photolithographic patterning technology is adopted to design a new type of liquid crystal binary mask. The inherent conductive metal layer of commercial liquid crystal electro-optical spatial light modulators is replaced by azobenzene-based photoalignment layers patterned by noncontact photolithography. Using the azobenzene-based photoalignment layer, a liquid crystal binary mask for beam shaping is fabricated. In addition, the shaping ability, damage threshold, write/erase flexibility and stability of the liquid crystal binary mask are tested. Using a 1 Hz near-IR (1064 nm) laser, the multiple-shot nanosecond damage threshold of the liquid crystal mask is measured to be higher than $15~\text{J}/\text{cm}^{2}$. The damage threshold of the azobenzene-based photoalignment layer is higher than $50~\text{J}/\text{cm}^{2}$ under the same testing conditions.

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.

Electrooptical Responses of Carbon Nanotube-Doped Liquid Crystal Devices

2005 ◽  
Vol 44 (11) ◽  
pp. 8077-8081 ◽  
Author(s):  
Chi-Yen Huang ◽  
Chao-Yuan Hu ◽  
Hung-Chih Pan ◽  
Kuang-Yao Lo
Keyword(s):  
Liquid Crystal ◽  
Carbon Nanotube ◽  
Liquid Crystal Devices

Effects of the dispersion of zirconium dioxide nanoparticles on high performance electro-optic properties in liquid crystal devices

2011 ◽  
Vol 38 (7) ◽  
pp. 871-875 ◽  
Author(s):  
Hyung-Jun Kim ◽  
Young-Gu Kang ◽  
Hong-Gyu Park ◽  
Kang-Min Lee ◽  
Seok Yang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Zirconium Dioxide ◽  
High Performance ◽  
Liquid Crystal Devices ◽  
Electro Optic ◽  
Zirconium Dioxide Nanoparticles

Flexible ferroelectric liquid-crystal devices containing fine polymer fibers

2002 ◽  
Vol 10 (1) ◽  
pp. 95 ◽  
Author(s):  
Hideo Fujikake ◽  
Takeshi Murashige ◽  
Hiroto Sato ◽  
Yoshiki Iino ◽  
Masahiro Kawakita ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Polymer Fibers ◽  
Ferroelectric Liquid Crystal ◽  
Liquid Crystal Devices

Active Liquid Crystal Devices Incorporating Liquid Crystal Polymer Thin Film Waveplates

1999 ◽  
Vol 38 (Part 1, No. 1A) ◽  
pp. 95-100 ◽  
Author(s):  
Yoriko Morita ◽  
Jay E. Stockley ◽  
Kristina M. Johnson ◽  
Eckhard Hanelt ◽  
Frank Sandmeyer
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Liquid Crystal Polymer ◽  
Polymer Thin Film ◽  
Liquid Crystal Devices ◽  
Crystal Polymer ◽  
Active Liquid
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