Polarization-independent and high-diffraction-efficiency Fresnel lenses based on blue phase liquid crystals

2011 ◽  
Vol 36 (4) ◽  
pp. 502 ◽  
Author(s):  
Chi-Huang Lin ◽  
Yu-Yin Wang ◽  
Cheng-Wei Hsieh
Keyword(s):  
Liquid Crystals ◽  
Diffraction Efficiency ◽  
Fresnel Lenses ◽  
Phase Liquid ◽  
Blue Phase ◽  
High Diffraction Efficiency ◽  
High Diffraction ◽  
Polarization Independent

Polarization-independent refractive index tuning using gold nanoparticle-stabilized blue phase liquid crystals

2011 ◽  
Vol 36 (18) ◽  
pp. 3578 ◽  
Author(s):  
Shuhei Yabu ◽  
Yuma Tanaka ◽  
Kenji Tagashira ◽  
Hiroyuki Yoshida ◽  
Akihiko Fujii ◽  
...  
Keyword(s):  
Refractive Index ◽  
Liquid Crystals ◽  
Gold Nanoparticle ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polarization Independent

scholarly journals Polarization-independent high diffraction efficiency two-dimensional grating based on cylindrical hole nano arrays

2020 ◽  
Vol 28 (20) ◽  
pp. 28810
Author(s):  
Bin Zhou ◽  
Wei Jia ◽  
Peng Sun ◽  
Jin Wang ◽  
Weicheng Liu ◽  
...  
Keyword(s):  
Diffraction Efficiency ◽  
Cylindrical Hole ◽  
Two Dimensional ◽  
High Diffraction Efficiency ◽  
High Diffraction ◽  
Polarization Independent

scholarly journals Polarization-independent and fast tunable microlens array based on blue phase liquid crystals

2014 ◽  
Vol 22 (1) ◽  
pp. 925 ◽  
Author(s):  
Shih-Hung Lin ◽  
Lin-Song Huang ◽  
Chi-Huang Lin ◽  
Chie-Tong Kuo
Keyword(s):  
Liquid Crystals ◽  
Microlens Array ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polarization Independent

scholarly journals Tunable light beam steering device using polymer stabilized blue phase liquid crystals

2017 ◽  
Vol 9 (1) ◽  
pp. 11 ◽  
Author(s):  
Pankaj Joshi ◽  
Oliver Willekens ◽  
Xiaobing Shang ◽  
Jelle De Smet ◽  
Dieter Cuypers ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Beam Steering ◽  
Polymer Dispersed ◽  
Phase Liquid ◽  
Blue Phase ◽  
Blue Phases ◽  
Polymer Stabilized ◽  
Polarization Independent

A polarization independent and fast electrically switchable beam steering device is presented, based on a surface relief grating combined with polymer stabilized blue phase liquid crystals. Switching on and off times are both less than 2 milliseconds. The prospects of further improvements are discussed. Full Text: PDF ReferencesD.C. Wright, et al., "Crystalline liquids: the blue phases", Rev. Mod. Phys. 61, 385 (1989). CrossRef H. Kikuchi, et al., "Polymer-stabilized liquid crystal blue phases", Nat. Mater. 1, 64 (2002). CrossRef Samsung, Korea, SID exhibition, (2008).J. Yan, et al., "Direct measurement of electric-field-induced birefringence in a polymer-stabilized blue-phase liquid crystal composite", Opt. Express 18, 11450 (2010). CrossRef L. Rao, et al., "A large Kerr constant polymer-stabilized blue phase liquid crystal", Appl. Phys. Lett. 98, 081109 (2011). CrossRef Y. Hisakado, et al., "Large Electro-optic Kerr Effect in Polymer-Stabilized Liquid-Crystalline Blue Phases", Adv. Mater. 17, 96 (2005). CrossRef K. M. et al., "Submillisecond Gray-Level Response Time of a Polymer-Stabilized Blue-Phase Liquid Crystal", J. Disp. Technol. 6, 49 (2010). CrossRef Y. Chen, et al., "Level set based topology optimization for optical cloaks", Appl. Phys. Lett. 102, 251106 (2013). CrossRef H. Choi, et al., "Fast electro-optic switching in liquid crystal blue phase II", Appl. Phys. Lett. 98, 131905 (2011). CrossRef Y.H. Chen, et al., "Polarization independent Fabry-Pérot filter based on polymer-stabilized blue phase liquid crystals with fast response time", Opt. Express 19, 25441 (2011). CrossRef Y. Li, et al., "Polarization independent adaptive microlens with a blue-phase liquid crystal", Opt. Express 19, 8045 (2011). CrossRef C.T. Lee, et al., "Design of polarization-insensitive multi-electrode GRIN lens with a blue-phase liquid crystal", Opt. Express 19, 17402 (2011). CrossRef Y.T. Lin, et al., "Mid-infrared absorptance of silicon hyperdoped with chalcogen via fs-laser irradiation", J. Appl. Phys. 113, (2013). CrossRef J.D. Lin, et al., "Spatially tunable photonic bandgap of wide spectral range and lasing emission based on a blue phase wedge cell", Optics Express 22, 29479 (2014). CrossRef W. Cao, et al., "Lasing in a three-dimensional photonic crystal of the liquid crystal blue phase II", Nat. Mat. 1, 111 (2002). CrossRef S.T. Hur, et al., "Liquid-Crystalline Blue Phase Laser with Widely Tunable Wavelength", Adv. Mater. 25, 3002 (2013). CrossRef A. Mazzulla, et al., "Thermal and electrical laser tuning in liquid crystal blue phase I", Soft. Mater. 8, 4882 (2012). CrossRef C.W. Chen, et al., "Random lasing in blue phase liquid crystals", Opt. Express 20, 23978 (2012). CrossRef O. Willekens, et al., "Ferroelectric thin films with liquid crystal for gradient index applications", Opt. Exp. 24, 8088 (2016). CrossRef O. Willekens, et al., "Reflective liquid crystal hybrid beam-steerer", Opt. Exp. 24, 1541 (2016). CrossRef M. Jazbinšek, et al., "Characterization of holographic polymer dispersed liquid crystal transmission gratings", J. Appl. Phys. 90, 3831 (2001). CrossRef C.C. Bowley, et al., "Variable-wavelength switchable Bragg gratings formed in polymer-dispersed liquid crystals", Appl. Phys. Lett. 79, 9 (2001). CrossRef Y.Q. Lu, et al., "Polarization switch using thick holographic polymer-dispersed liquid crystal grating", Appl. Phys. 95, 810 (2004). CrossRef J.J. Butler et al., "Diffraction properties of highly birefringent liquid-crystal composite gratings", Opt. Lett. 25, 420 (2000). CrossRef R.L. Sutherland et al., "Electrically switchable volume gratings in polymer-dispersed liquid crystals", Appl. Phys. Lett. 64, 1074 (1994). CrossRef X. Shang, et al., "Electrically Controllable Liquid Crystal Component for Efficient Light Steering", IEEE Photo. J. 7, 1 (2015). CrossRef J. Yan, et al., "Extended Kerr effect of polymer-stabilized blue-phase liquid crystals", Appl. Phys. Lett. 96, 071105 (2010). CrossRef H.S. Chen, et al., "Hysteresis-free polymer-stabilized blue phase liquid crystals using thermal recycles", Opt. Mat. Exp. 2, 1149 (2012). CrossRef J. Yan. et al., "Dual-period tunable phase grating using polymer stabilized blue phase liquid crystal", Opt. Lett. 40, 4520 (2015). CrossRef H.S. Chen, et al., "Hysteresis-free polymer-stabilized blue phase liquid crystals using thermal recycles", Opt. Mat. Exp. 2, 1149 (2012). CrossRef H.C. Cheng, et al., "Blue-Phase Liquid Crystal Displays With Vertical Field Switching", J. Disp. Technol. 8, 98 (2012). CrossRef

HIGHLY EFFICIENT HOLOGRAPHIC MATERIALS BASED ON POLYMER LIQUID CRYSTALS

2003 ◽  
Vol 12 (04) ◽  
pp. 539-546 ◽  
Author(s):  
KUNIHIKO OKANO ◽  
ATSUSHI SHISHIDO ◽  
OSAMU TSUTSUMI ◽  
TAKESHI SHIONO ◽  
TOMIKI IKEDA
Keyword(s):  
Liquid Crystals ◽  
Diffraction Efficiency ◽  
Glassy State ◽  
Spacer Length ◽  
Polymer Liquid ◽  
Highly Efficient ◽  
Polymer Liquid Crystals ◽  
Azobenzene Group ◽  
High Diffraction Efficiency ◽  
High Diffraction

Formation of gratings by means of the photoinduced alignment change of polymer liquid crystals (PLCs) has been explored in a glassy state. To obtain high diffraction efficiency (η), we synthesized highly birefringent PLCs containing an azobenzene group directly connected with a tolane moiety (3ATm), in which the alkyl spacer length ( CH 2)m was varied as m=6, 9 and 12. It was found that the values of birefringence in all the PLCs were about 0.4. The behaviors of the photoinduced alignment change and the formation of gratings were found to be dependent on the alkyl spacer length of 3ATm.

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