Dr. Nikita W. Almond Profile

Dr. Nikita W. Almond

at Univ of Cambridge

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Author

Publications (5)

Proceedings Article | 15 November 2024 Paper

A graphene-metal metasurface for terahertz modulation with a depth of several orders of magnitude

Ruqiao Xia, Nikita Almond, Wadood Tadbier, Harvey Beere, Stephan Hofmann, David Ritchie, Wladislaw Michailow

Proceedings Volume 13203, 132030D (2024) https://doi.org/10.1117/12.3031695

KEYWORDS: Modulation, Graphene, Terahertz radiation, Modulators, Reflection, Antennas, Metamaterials, Terahertz metamaterials, Amplitude modulation

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Proceedings Article | 17 October 2023 Presentation + Paper

Investigation of the influence of antenna geometry on terahertz photoelectric tunable-step detector performance

Ran Chen, Nikita Almond, Harvey Beere, David Ritchie, Wladislaw Michailow

Proceedings Volume 12740, 127400I (2023) https://doi.org/10.1117/12.2679876

KEYWORDS: Antennas, Quantum cascade lasers, Photoelectric effect, Heterojunctions, Quantum channels, Photocurrent, Terahertz detection, Gallium arsenide

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Proceedings Article | 17 October 2023 Presentation + Paper

Solid-state terahertz intensity modulator based on a single-layer graphene-metal metasurface

Ruqiao Xia, Nikita Almond, Harvey Beere, David Ritchie, Wladislaw Michailow

Proceedings Volume 12740, 127400G (2023) https://doi.org/10.1117/12.2679912

KEYWORDS: Terahertz radiation, Modulation, Antennas, Graphene, Terahertz spectroscopy, Solid state electronics, Signal intensity, Metals, Electric fields

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Proceedings Article | 20 August 2020 Poster + Paper

Terahertz aperture SNOM mapping of metamaterial coupled resonators

Nikita Almond, Rodolfo Hermans, Lucy Hale, Stephen Kindness, Wladislaw Michailow, Binbin Wei, Xavier Romain, Sheng Ye, Robert Young, Riccardo Degl'Innocenti, Harvey Beere, David Ritchie, Oleg Mitrofanov

Proceedings Volume 11460, 114601R (2020) https://doi.org/10.1117/12.2568045

KEYWORDS: Resonators, Terahertz radiation, Metamaterials, Near field scanning optical microscopy, Near field, Picosecond phenomena, Gold, Transparency, Silicon

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Proceedings Article | 14 September 2018 Presentation + Paper

Metamaterial/graphene amplitude and frequency modulators for the active control of terahertz quantum cascade lasers

R. Degl'Innocenti, Stephen Kindness, Nikita Almond, Binbin Wei, Robert Wallis, Varun Kamboj, Philipp Braeuninger-Weimer, Stephan Hofmann, Harvey Beere, David Ritchie

Proceedings Volume 10756, 107560U (2018) https://doi.org/10.1117/12.2320506

KEYWORDS: Graphene, Quantum cascade lasers, Modulators, Terahertz radiation, Resonators, Metamaterials, Modulation, Optoelectronics

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