Articles with "circular polarization" as a keyword



Uncovering the Circular Polarization Potential of Chiral Photonic Cellulose Films for Photonic Applications.

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Published in 2018 at "Advanced materials"

DOI: 10.1002/adma.201705948

Abstract: Circularly polarized light (CPL) is central to photonic technologies. A key challenge lies in developing a general route for generation of CPL with tailored chiroptical activity using low-cost raw materials suitable for scale-up. This study… read more here.

Keywords: cellulose films; cpl; circular polarization; photonic applications ... See more keywords

Morpho‐Butterfly‐Inspired Patterning of Helical Photonic Structures for Circular‐Polarization‐Sensitive, Wide‐Angle Diffuse Reflection

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Published in 2017 at "Advanced Optical Materials"

DOI: 10.1002/adom.201601071

Abstract: Cholesteric liquid crystals are known to exhibit a circular-polarization selective Bragg reflection band over a wavelength region determined by their reflective index and pitch. In a planar device where the molecules are aligned unidirectionally at… read more here.

Keywords: reflection; butterfly; circular polarization; diffuse reflection ... See more keywords

Circular Polarization Discrimination Enhanced by Anisotropic Media

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Published in 2020 at "Advanced Optical Materials"

DOI: 10.1002/adom.201901800

Abstract: Circular polarization discrimination is desired for use in many optoelectronic applications. By integrating asymmetric metamaterials with active materials, circular‐polarization‐discriminative light–matter interaction can be realized. Nevertheless, the circular polarization extinction ratio for absorption of the active… read more here.

Keywords: polarization discrimination; polarization extinction; extinction ratio; polarization ... See more keywords

Plasmon‐Enhanced Circular Polarization High‐Harmonic Generation from Silicon

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Published in 2024 at "Advanced Optical Materials"

DOI: 10.1002/adom.202401478

Abstract: High harmonics of circular polarization can be directly generated by monochromatic circularly polarized incident light owing to the high density and stable structure of crystal media. If the arrangement of multiple coplanar atoms in the… read more here.

Keywords: plasmon enhanced; high harmonic; high harmonics; circular polarization ... See more keywords

Microstrip Gasper‐Peano fractal antenna for circular polarization applications

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Published in 2019 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.31780

Abstract: In this article, a slot array antenna with circular polarization is presented. The structure is designed based on GasperPeano fractal as a feed line. By use of the Minimum mean square error method, the array… read more here.

Keywords: antenna circular; microstrip gasper; polarization; radiation ... See more keywords

A dual‐band linear‐to‐circular polarization converter with robustness under oblique incidences

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Published in 2020 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32598

Abstract: A dual‐band linear‐to‐circular polarization converter is proposed and experimentally demonstrated in this work. The structure consists of four identical meander‐line layers separated by air. The converter transforms y‐polarized waves into left hand circular‐polarized waves in… read more here.

Keywords: converter; band; linear circular; circular polarization ... See more keywords

A compact dielectric resonator antenna with wideband circular polarization characteristics for C and X‐band applications

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Published in 2024 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.34241

Abstract: A wideband circularly polarized (CP) stacked rectangular dielectric resonator antenna (RDRA) is proposed in this article. The 3 dB axial ratio (AR) and 10 dB impedance bandwidth overlap of more than 66% is obtained. For increased bandwidth,… read more here.

Keywords: delta; band applications; antenna; resonator antenna ... See more keywords

An Ultra‐Thin Broadband Linear‐to‐Circular Polarization Converter With Transmissive Characteristic for Ka‐Band Satellite Communications

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Published in 2025 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.70452

Abstract: In this letter, an ultra‐thin and broadband transmissive linear‐to‐circular polarization converter (LTCPC) is presented. This LTCPC consists of a single substrate with symmetrical metallic patterns on its surface, composed of split rings and an internally… read more here.

Keywords: thin broadband; ultra thin; circular polarization; linear circular ... See more keywords

Chiroptically Active Metallic Nanohelices with Helical Anisotropy.

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Published in 2017 at "Small"

DOI: 10.1002/smll.201701883

Abstract: Manipulation of circular polarization states of light in the ultraviolet-visible-near infrared range, which cannot be operated using natural materials, is of fundamental interest derived from a wide range of chirality-associated optical, chemical and biological applications.… read more here.

Keywords: metallic nanohelices; helical anisotropy; metallic nhs; circular polarization ... See more keywords

Multi-band reflective metasurface for efficient linear and circular polarization conversion

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Published in 2025 at "Optical and Quantum Electronics"

DOI: 10.1007/s11082-025-08037-y

Abstract: This paper introduces a novel reflective metasurface for efficient polarization conversion in the X, Ku, and K bands. Through rigorous simulations and experimental validation, high polarization conversion ratios (PCR) exceeding 90% were achieved, even at… read more here.

Keywords: polarization; reflective metasurface; circular polarization; polarization conversion ... See more keywords

The Low-Frequency Solar Corona in Circular Polarization

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Published in 2019 at "Solar Physics"

DOI: 10.1007/s11207-019-1502-y

Abstract: We present spectropolarimetric imaging observations of the solar corona at low frequencies (80 - 240 MHz) using the Murchison Widefield Array (MWA). These images are the first of their kind, and we introduce an algorithm… read more here.

Keywords: frequency solar; polarization; circular polarization; corona circular ... See more keywords