Generation of optical vortices using a uniaxially aligned azo-dye-doped liquid crystal cell and space-variant polarization projection system

2019 ◽  
Vol 58 (26) ◽  
pp. 7145
Author(s):  
Moritsugu Sakamoto ◽  
Satoru Kaneko ◽  
Kohei Noda ◽  
Tomoyuki Sasaki ◽  
Nobuhiro Kawatsuki ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Azo Dye ◽  
Liquid Crystal Cell ◽  
Optical Vortices ◽  
Projection System ◽  
Crystal Cell ◽  
Space Variant

scholarly journals Spatially Broadband Coupled-Surface Plasmon Wave Assisted Transmission Effect in Azo-Dye-Doped Liquid Crystal Cell

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1357
Author(s):  
Guan-Ting Dong ◽  
Chun-Ta Wang ◽  
Yu-Ju Hung
Keyword(s):  
Liquid Crystal ◽  
Surface Plasmon ◽  
Azo Dye ◽  
Surface Plasmon Polariton ◽  
Mie Scattering ◽  
Aluminum Film ◽  
Liquid Crystal Cell ◽  
Metallic Surface ◽  
Crystal Cell ◽  
Plasmon Polariton

Active tuning on a plasmonic structure is discussed in this report. We examined the transient transmission effects of an azo-dye-doped liquid crystal cell on a metallic surface grating. The transition between isotropic and nematic phases in liquid crystal generated micro-domains was shown to induce the dynamic scattering of light from a He-Ne laser, thereby allowing transmission through a non-transparent aluminum film overlaying a dielectric grating. Various grating pitches were tested in terms of transmission effects. The patterned gratings include stripe ones and circular forms. Our results indicate that surface plasmon polariton waves are involved in the transmission process. We also demonstrated how momentum diagrams of gratings and Surface Plasmon Polariton (SPP) modes combined with Mie scattering effects could explain the broadband coupling phenomenon. This noteworthy transition process could be applied to the development of spatially broadband surface plasmon polariton coupling devices.

Generating electrically tunable optical vortices by a liquid crystal cell with patterned electrode

2008 ◽  
Vol 92 (10) ◽  
pp. 101114 ◽  
Author(s):  
Y. J. Liu ◽  
X. W. Sun ◽  
D. Luo ◽  
Z. Raszewski
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Cell ◽  
Optical Vortices ◽  
Crystal Cell

Laser-Induced Nonlinear Gaussian Lens in Liquid Crystal Cell Gives Birth to Optical Vortices

1998 ◽  
Vol 324 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Yuriy A. Reznikov ◽  
Marat S. Soskin ◽  
Sergey S. Slussarenko ◽  
Oleg P. Pishnyak ◽  
Denis V. Fedorenko ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Cell ◽  
Optical Vortices ◽  
Crystal Cell

Dichroic Azo Dyes for Guest-Host Liquid-Crystal Cell

1982 ◽  
Vol 21 (Part 1, No. 1) ◽  
pp. 191-192 ◽  
Author(s):  
Hidehiro Seki ◽  
Chiyoko Shishido ◽  
Shigeo Yasui ◽  
Tatsuo Uchida
Keyword(s):  
Liquid Crystal ◽  
Azo Dyes ◽  
Liquid Crystal Cell ◽  
Crystal Cell

Liquid crystal cell for space-borne laser rangefinder to space mission applications

2012 ◽  
Vol 20 (4) ◽  
Author(s):  
E. Nowinowski-Kruszelnicki ◽  
L. Jaroszewicz ◽  
Z. Raszewski ◽  
L. Soms ◽  
W. Piecek ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Polarization Plane ◽  
Space Mission ◽  
Liquid Crystal Cell ◽  
Laser Rangefinder ◽  
Aperture Diameter ◽  
Crystal Cell ◽  
University Of Technology ◽  
Twisted Nematic ◽  
Space Requirements

AbstractLiquid crystal cell (LCC) for space-borne laser rangefinder to space mission applications was developed, manufactured and tested under cooperation between Military University of Technology (MUT) in Poland and Vavilov State Optical Institute (Vavilov SOI) in Russia. LCC operates in twisted nematic mode, commutating the polarization plane of a laser beam working at 1.064 μm and the energy density not smaller than 0,15 J/cm2 at the pulse duration about 8 ns. The transmission of LCC is not smaller than 95% at the aperture diameter not less than 15 mm. Switching on and switching off times in a 2.5-μm thick LCC driven by voltage of 10 V are not larger than 0.7 ms and 7 ms, respectively, in the operating temperature range from 20°C to 40°C. The LCCs developed in MUT were positively tested under space requirements in Vavilov SOI.

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