Spin-Preserving Chiral Photonic Crystal Mirror

Semnani, Behrooz; Flannery, Jeremy; Ding, Zhenghao; Maruf, Rubayet Al; Bajcsy, Michal

doi:10.1364/cleo_qels.2019.fm1b.1

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…However, due to metal absorption loss, the efficiency is limited. In recent years, lossless dielectric chiral metasurfaces have attracted much attention and utilized to achieve low loss, high refractive index, large field enhancement, excitation of high-order Mie resonance modes, or more efficient optical manipulation with higher degrees of freedom, and many structures with outstanding performance have been designed [19][20][21][22][23][24][25][26][27]. These lossless ultra-thin chiral metasurface structures were small in size, high in efficiency, and rich in functions, and can be used for detection of chiral substances, as well as metalenses toreplace the traditional large-volume optical components, such as lenses, polarizers, quarter glass slides, etc.…”

Section: Introductionmentioning

confidence: 99%

Wideband High-Reflection Chiral Dielectric Metasurface

Hu¹,

He²,

Sun³

et al. 2021

PIER

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Compared to natural materials, artificial subwavelength structures can enhance chiroptical effects in a stronger way, and the requirement of low material loss and wideband operation is desired in many situations. Here, we propose an all-dielectric chiral metasurface as a periodic array of centrosymmetric staggered silicon cuboid pairs to achieve strong circular dichroism in a wide band. As a demonstration, the designed chiral metasurface may strongly reflect the chosen circularly polarized light with the spin preserved in the operating wavelength range of 1.51 ∼ 1.60 µm while highly transmit (with an efficiency greater than 95%) the opposite circularly polarized light with the spin flipped. Then, two application cases are given for the designed chiral metasurface. A flat chiral meta-lens is constructed to produce wideband focusing in the transmission/reflection side while the disturbing from the opposite circular polarization is well blocked by high reflection/transmission. A chiral Fabry-Perot cavity is also constructed, which has an extremely high quality factor (2.1E4). The proposed method provides an efficient way to produce strong chiroptical effects and has a promising potential for various applications such as signal processing, sensing, radiation and detection.

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Section: Introductionmentioning

confidence: 99%

Wideband High-Reflection Chiral Dielectric Metasurface

Hu¹,

He²,

Sun³

et al. 2021

PIER

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“…Plasmonic nanostructures provide a large amount of free electrons, which can be excited by far-field light, generating near-field electromagnetic enhancements to tailor the behaviors of 2D exciton emissions. Besides, photonic crystals are usually fabricated with periodical dielectric materials, which can suppress the loss and offer high-quality photon modes [ 67 ]. The strong coupling between excitons and photons has been extensively investigated in the system of photonic crystal-coupled 2D materials.…”

Section: Introductionmentioning

confidence: 99%

Polarization-Dependent Optical Properties and Optoelectronic Devices of 2D Materials

Liang

Pan

2020

Research

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The development of optoelectronic devices requires breakthroughs in new material systems and novel device mechanisms, and the demand recently changes from the detection of signal intensity and responsivity to the exploration of sensitivity of polarized state information. Two-dimensional (2D) materials are a rich family exhibiting diverse physical and electronic properties for polarization device applications, including anisotropic materials, valleytronic materials, and other hybrid heterostructures. In this review, we first review the polarized-light-dependent physical mechanism in 2D materials, then present detailed descriptions in optical and optoelectronic properties, involving Raman shift, optical absorption, and light emission and functional optoelectronic devices. Finally, a comment is made on future developments and challenges. The plethora of 2D materials and their heterostructures offers the promise of polarization-dependent scientific discovery and optoelectronic device application.

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Reflection of Optical Signals on the Border of Heterogeneous Chiral Layer with Dispersion

Moiseeva

Moiseev

2019

2019 Russian Open Conference on Radio Wave Propagation (RWP)

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Spin-Preserving Chiral Photonic Crystal Mirror

Cited by 3 publications

References 3 publications

Wideband High-Reflection Chiral Dielectric Metasurface

Wideband High-Reflection Chiral Dielectric Metasurface

Polarization-Dependent Optical Properties and Optoelectronic Devices of 2D Materials

Reflection of Optical Signals on the Border of Heterogeneous Chiral Layer with Dispersion

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