Free-standing graphene oxide mid-infrared polarizers

Zheng, Xiaorui; Xu, Bing; Li, Shuo; Lin, Han; Qiu, Ling; Li, Dan; Jia, Baohua

doi:10.1039/d0nr01619e

Cited by 22 publications

(34 citation statements)

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“…Figure a shows the measured linear refractive index n and extinction coefficient k of a GO film in the wavelength range of 200 nm–25 µm. [ 70 ] Figure 5b compares the n , k of GO and graphene films measured by spectral ellipsometry. [ 71 ] As can be seen, GO films exhibit a high refractive index n of about 2 in the wavelength range covering visible, near‐infrared, and mid‐infrared regions.…”

Section: Optical Properties Of Gomentioning

confidence: 99%

Graphene Oxide for Integrated Photonics and Flat Optics

et al. 2020

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With superior optical properties, high flexibility in engineering its material properties, and strong capability for large‐scale on‐chip integration, graphene oxide (GO) is an attractive solution for on‐chip integration of 2D materials to implement functional integrated photonic devices capable of new features. Over the past decade, integrated GO photonics, representing an innovative merging of integrated photonic devices and thin GO films, has experienced significant development, leading to a surge in many applications covering almost every field of optical sciences such as photovoltaics, optical imaging, sensing, nonlinear optics, and light emitting. This paper reviews the recent advances in this emerging field, providing an overview of the optical properties of GO as well as methods for the on‐chip integration of GO. The main achievements made in GO hybrid integrated photonic devices for diverse applications are summarized. The open challenges as well as the potential for future improvement are also discussed.

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Section: Optical Properties Of Gomentioning

confidence: 99%

Graphene Oxide for Integrated Photonics and Flat Optics

et al. 2020

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“…Fig. 5(a) shows the measured linear refractive index n and extinction coefficient k of a GO film in the wavelength range of 200 nm -25 μm [55]. Fig.…”

Section: Linear Optical Propertiesmentioning

confidence: 99%

“…Owing to the dispersionless nature of the GO film, the operation band can be tuned over a wide range from the visible (600 nm) to the near infrared (1.6 µm). Based on accurately characterizing the dispersion of GO from the visible (200 nm) to MIR (up to 25 μm) region, Zheng et al [55] subsequently demonstrated high performing thin film polarizers on free-standing GO films ( Fig. 11(d-i)), achieving a large ER (∼20 dB) and controllable working wavelengths in midinfrared region ( Fig.…”

Section: Polarization Selective Devicesmentioning

confidence: 99%

“…Linear optical properties of GO. (a) Measured refractive indices (n) and extinction coefficients (k) of GO from the visible (down to 200 nm) to mid-infrared (up to 25 μm) wavelengths[55]. (a) Comparison of n, k between GO and graphene[56].…”

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“…(c) GO thin film polarizer based on 2D periodic C-shape array[25]: (i) microscopic image of the fabricated device; (ii) transmission spectra with TE and TM polarized light incidence. (d) Mid-infrared thin film polarizer based on GO gratings[55]: (i) 3D topographic view of the fabricated device; (ii) theoretical and experimental transmission spectra for TE and TM polarizations.…”

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Graphene oxide films for advanced ultra-flat optical devices and photonic integrated circuits

Moss¹

2020

Preprint

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With superior optical properties, high flexibility in engineering its material properties, and strong capability for large-scale on-chip integration, graphene oxide (GO) is an attractive solution for on-chip integration of two-dimensional (2D) materials to implement functional integrated photonic devices capable of new features. Over the past decade, integrated GO photonics, representing an innovative merging of integrated photonic devices and thin GO films, has experienced significant development, leading to a surge in many applications covering almost every field of optical sciences. This paper reviews the recent advances in this emerging field, providing an overview of the optical properties of GO as well as methods for the on-chip integration of GO. The main achievements made in GO hybrid integrated photonic devices for diverse applications are summarized. The open challenges as well as the potential for future improvement are also discussed.

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Graphene Multilayer Photonic Metamaterials: Fundamentals and Applications

Lin

Yang

et al. 2021

Adv Materials Technologies

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Graphene is given high expectation due to their unique properties and advantages and has revolutionized different research fields and leads to enormous applications. However, monolayer graphene shows limited absorption due to the ultrathin thickness, which compromises the optical modulation capability. Therefore, graphene metamaterials consisting of alternatively stacked graphene and dielectric layers or graphene layer combined with conventional metamaterial structures are proposed as artificially structured materials to exploit both graphene's unique material properties and nanostructure capability of metamaterials to achieve strong optical modulations. The recent breakthrough in experimental fabrication of graphene metamaterials, in particular the solution‐based method which allows large‐area fabrication of graphene metamaterials with monolayer‐thickness controllability and nanometer surface roughness, enables extraordinary optical properties and opens various new possibilities both in research and manufacturing. In this comprehensive review, the concept of graphene metamaterials, the unique optical properties, and the enabling fabrication methods are demonstrated. The multifunctionality of graphene metamaterials offer a novel platform for manufacturing innovative optical and photonic devices with the advantages of broad working bandwidth, high efficiency, fast response, tunability, integrability, and low energy consumption. The review provides insights to future innovations for the booming graphene metamaterials and metaphotonic devices in the disciplines of optics, nanophotonics, and optoelectronics.

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Free-standing graphene oxide mid-infrared polarizers

Abstract: Mid-infrared free-standing graphene oxide polarizers with working wavelengths from 2 μm to 14 μm, and an extinction ratio of 20 dB.

Cited by 22 publications

References 42 publications

Graphene Oxide for Integrated Photonics and Flat Optics

Graphene Oxide for Integrated Photonics and Flat Optics

Graphene oxide films for advanced ultra-flat optical devices and photonic integrated circuits

Graphene Multilayer Photonic Metamaterials: Fundamentals and Applications

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