Enhanced optical tuning of modified-geometry resonators clad in blue phase liquid crystals

Ptasinski, Joanna; Khoo, Iam Choon; Fainman, Yeshaiahu

doi:10.1364/ol.39.005435

Cited by 12 publications

(6 citation statements)

References 18 publications

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“…Moreover, the structure may be optimized to operate over a wider bandgap. Tunability with the incorporation of for example, liquid crystals [86][87][88][89][90], can also be utilized to mitigate the bandwidth issue.…”

Section: Discussionmentioning

confidence: 99%

Hyperbolic metamaterial feasible for fabrication with direct laser writing processes

2015

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Received Month X, XXXX; revised Month X, XXXX; accepted Month X, XXXX;posted Month X, XXXX (Doc. ID XXXXX); published Month X, XXXX Stimulated emission depletion microscopy inspired direct laser writing (STED-DLW) processes can offer diffraction-unlimited fabrication of 3D-structures, not possible with traditional electron-beam or optical lithography. We propose a hyperbolic metamaterial for fabrication with STED-DLW. First, we design meandering wire structures with three different magnetic dipoles which can be excited under different incidences of light. Then, based on effective parameters corresponding to normal incidence and lateral incidence, we find that the hyperbolic dispersion relation for five-layer structure appears between 15THz to 20 THz. Finally, we investigate the influence of imaginary parts of the effective parameters on the metamaterial dispersion. The proposed metamaterial structure has also potential for three-dimensionally isotropic permeability despite geometric anisotropy.

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Section: Discussionmentioning

confidence: 99%

Hyperbolic metamaterial feasible for fabrication with direct laser writing processes

2015

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“…Two kinds of resonant interactions occur between an optical field and the electrons of a plasmonic (metal) material [61][62][63][64][65][66][67][68][69][70][71][72]: (a) Surface Plasmon Resonance (SPR) -associated with collective oscillations of the electrons near the surface; (b) Localized Surface Plasmon Resonances [LSPR) -associated with light interaction with isolated metal nanoparticles. Tunability of the optical properties of plasmonic nanostructures with liquid crystals can be accomplished by either (a) dissolving or suspending nano-size plasmonic particles in bulk NLC cell, or (b) incorporating LC in plasmonic nanostructures.…”

Section: Tunable Plasmonic Nanostructures Micro-ring Resonators and E...mentioning

confidence: 99%

Liquid crystals for optical switches, smart windows, reconfigurable/tunable meta-structures, micro-resonator coupling and plasmonic nanostructures

Khoo

2023

Liquid Crystals XXVII

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This review provides an overview of the wide-ranging dynamical nonlinear- and electro- optical responses of liquid crystals and reexamine some exemplary photonic applications such as smart windows/display, tunable/reconfigurable metamaterials or metasurfaces, plasmonic nanostructures, micro-ring resonator, and chiral photonic crystals for polarizations and manipulations of ultrafast pulsed lasers of complex polarization states.

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“…It has been suggested that the diffraction power could be improved by eight times larger, yielding a n 2 of *0.5 cm 2 /W [146]. Ptasinski et al recently designed an adiabatic racetrack resonator clad in the dye doped BP to achieve all-optical modulation [147]. Under the illumination of a broadband blue LED (λ * 470 nm), the resonant wavelengths shifted 1.23 nm at maximum.…”

Section: Nonlinear Optical Response Of Bpsmentioning

confidence: 99%

Self-Organized 3D Photonic Superstructure: Blue Phase Liquid Crystal

Lin

Chen

2015

Anisotropic Nanomaterials

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Blue phase liquid crystals (BPLCs) have attracted considerable attention in recent years owing to their unique periodic structure and electro-optic properties. Besides the potential applications in the next generation display, BPLC with a cubic lattice structure can be regarded as a self-organized three-dimenstional (3D) photonic crystal that can be applied for photonic devices such as optical filter, optical attenuator, phase modulator, laser source and so on. This chapter will introduce the formation of BPLCs from both theoretical and experimental points of view. The stability and temperature range of BPLCs are also discussed followed by its photonic crystal structure, lattice orientation and phase identification. After a basic overview, this chapter will further introduce the applications of BPLCs, including controllability of photonic band gap with external fields, fast electro-optic Kerr effect, and optical nonlinear effect. This short summary shows that the century old intriguing BPLCs have diverse opportunities to offer in modern photonic materials and devices. Moreover, the current challenges in this area are expected to spark innovative ideas leading toward the design and engineering of new chiral materials that may furnish suitable BPLCs to produce advanced photonic materials that have desirable properties and functions.

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Enhanced optical tuning of modified-geometry resonators clad in blue phase liquid crystals

Cited by 12 publications

References 18 publications

Hyperbolic metamaterial feasible for fabrication with direct laser writing processes

Hyperbolic metamaterial feasible for fabrication with direct laser writing processes

Liquid crystals for optical switches, smart windows, reconfigurable/tunable meta-structures, micro-resonator coupling and plasmonic nanostructures

Self-Organized 3D Photonic Superstructure: Blue Phase Liquid Crystal

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