A Compact Full 2π Flexoelectro‐Optic Liquid Crystal Phase Modulator

Wang, Xiuze; Fells, Julian A. J.; Shi, Yuping; Ali, Taimoor; Welch, Chris; Mehl, Georg H.; Wilkinson, Timothy D.; Booth, Martin J.; Morris, Stephen M.; Elston, Steve J.

doi:10.1002/admt.202000589

Cited by 9 publications

(6 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In previous work, we have demonstrated how different polymerized layers can be integrated together to form more complex device architectures, such as a flexible defect mode laser [ 17 ] and a fast‐switching phase modulator. [ 46 ] To develop the integrated device, the thickness of the in‐plane electrodes would need to be controlled accurately and the refractive index matching between the chiral nematic and the nematic LC layer would require careful consideration to ensure that the internal reflection losses are minimized and to avoid any influence on the laser mode.…”

Section: The Polarization Controllermentioning

confidence: 99%

On‐Demand Polarization Controllable Liquid Crystal Laser

Ali

Elston

Lin

et al. 2022

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

show abstract

Section: The Polarization Controllermentioning

confidence: 99%

On‐Demand Polarization Controllable Liquid Crystal Laser

Ali

Elston

Lin

et al. 2022

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

show abstract

“…[ 23 ] Among the candidates mentioned above, the BPLC requires high driving voltage (>20 V) and also can achieve only low resolution because of the complicated electrode structure. [ 24 ] ULH CLCs also have similar limitations as BPLC that is the large driving voltage [ 25,26 ] and the change of the retardation. [ 27 ] As for FLC, which usually shows the response in tens of micro‐second at a low driving voltage (<7 V) attracts lots of attention.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Geometrical Phase Spatial Light Modulator Using Short‐Pitch Ferroelectric Liquid Crystals

Sun,

Yuan,

Swaminathan

et al. 2023

Advanced Optical Materials

View full text Add to dashboard Cite

This article presents an approach to achieve a fast and analog geometrical phase modulation based on the optical axis rotation of the defect‐free Deformed Helix Ferroelectric Liquid Crystal (DHFLC) with a short pitch. This study demonstrates a Spatial Light Modulator (SLM) prototype with a feature size of 3 µm without Fringe Field Effect (FFE), having a phase depth of 1.9π, fast switching time (<250 µs) at a low operating voltage (<7 V), and high diffraction efficiency (>77%). The high phase modulation depth is achieved by developing DHFLC with a cone angle of up to 85˚, which is inherently immune to FFE. The ellipticity is minimized by using a compensation film that can suppress the changes in birefringence under the applied electric field. The proposed SLM is promising in applications such as a real‐time hologram and dynamic beam steering in Light Ranging and Detector (LiDAR).

show abstract

“…Liquid crystal (LC) materials are always in the spotlight due to their great prospects for applications in emerging display technologies [ 1 ] and ever-changing LC photonics, such as virtual reality display, augmented reality display [ 2 ], 3D display [ 3 ], phase modulators [ 4 ], zoomable lenses [ 5 ], fiber optic communication [ 6 ], beam steering [ 7 ] and tunable terahertz devices [ 8 ]. These extensive applications have also presented several performance requirements for the development of LC materials.…”

Section: Introductionmentioning

confidence: 99%

Fluorination Improves the Electro-Optical Properties of Benzoxazole-Terminated Liquid Crystals in High Birefringence Liquid Crystal Mixtures: Experimental and Theoretical Investigations

et al. 2023

View full text Add to dashboard Cite

Aromatic heterocyclic liquid crystal (LC) materials have received much attention from LC chemists for their high birefringence and large dielectric anisotropy, yet few have reported their properties in LC mixtures. In this work, a series of fluorinated benzoxazole liquid crystal compounds were synthesized to evaluate their electro-optical properties in high birefringence LC mixtures, with the expectation of further establishing the theoretical basis and experimental evidence for their applications in LC photonics. Firstly, the effects of the lateral fluorine substituent positions on the molecular synthetic yield, mesomorphic and solubility properties were comparatively investigated. Afterwards, we focused on the fluorination effects on the core electro-optical properties, including birefringence, dielectric anisotropy and further investigation of the viscoelastic coefficient of high birefringence LC mixtures. Research results showed that the benzoxazole liquid crystal compounds possess low melting points, wide nematic phase intervals and good solubility by appropriate lateral fluorine substitution, which is beneficial to further improve the electro-optical properties of high birefringence LC mixtures. Meanwhile, the theoretical and experimental results corroborate each other to well reveal the structure–property relationship. This study demonstrates that fluorination would promote promising applications of benzoxazole-terminated liquid crystals in emerging LC optical devices.

show abstract

A Compact Full 2π Flexoelectro‐Optic Liquid Crystal Phase Modulator

Cited by 9 publications

References 36 publications

On‐Demand Polarization Controllable Liquid Crystal Laser

On‐Demand Polarization Controllable Liquid Crystal Laser

Reconfigurable Geometrical Phase Spatial Light Modulator Using Short‐Pitch Ferroelectric Liquid Crystals

Fluorination Improves the Electro-Optical Properties of Benzoxazole-Terminated Liquid Crystals in High Birefringence Liquid Crystal Mixtures: Experimental and Theoretical Investigations

Contact Info

Product

Resources

About