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Chiral Metamaterials for THz Polarisation Control

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Deliverables

Report on the design of tunable chiral graphene- and CNT-based metasurfaces/polarizers. Recommendations to executors of WP3 (opens in new window)

Homemade packages based on the Finite Difference Time Domain (FDTD) method and commercial solvers such as CST and COMSOL will be used for full wave electromagnetic analysis of the transmission and reflection coefficients, the electromagnetic modes, and the spatial distribution of the electromagnetic radiation both inside and around the structure for metamaterials/metasurfaces based on metals, dielectrics, semiconductors, graphene/CNT, and combinations of them. We will study the equilibrium morphology, electronic structure and Raman spectra, of the interface between a graphene monolayer and different utilized in project dielectric and semiconducting substrates using non-empiric quantum chemical density functional theory (DFT) simulation in the cluster approximation. Modelling of EM properties of different configuration of graphene coupled with metasurface vs their microscopic characteristics will be performed via semi-empirical methods of the computational electromagnetics. Tubability of graphene conductivity as it is and electromagnetic constituent parameters of metasurface coupled with graphene will be analysed vs highlighting with IR laser pulses and biasing.

Exploitation plan (opens in new window)

The exploitation plans will be formulated for i providing adequate and effective protection of knowledge created in the project ii promotion of the exploitation of project results under consideration of the IPR of participants iii Implementation of their actions

Report of the characterization of the fabricated chiral metasurfaces. (opens in new window)

The morphology of the fabricated metasurfaces will be studied by using SEM and optical microscopy techniques to reveal the relationship between sensitivity of the helicity of the THz radiation and fabrications parameters. The morphology and local electronic properties of the graphene films deposited on the top of the metasurface will be studied in-situ by using STM and STS in order to verify the thickness of the films, their substrate coverage and presence of defects. In addition, ARPES will be employed for studing the bandstructure of the deposited graphene sheet. The polarization-sensitive reflection and transmission of the fabricated structures in the THz the frequency range from 100 GHz to 3 THz will be performed by time domain terahertz spectrometer (EKSPLA, Vilnius Lithuania) based on femtosecond laser (wavelength 1 μm, pulse duration less than 150 fs) and GaBiAs photoconductive switch as THz emitter and detector. The polarization sensitive transmittance will be measured by using the optical rectification and free-space electro-optic sampling with ZnTe crystals and two wire grid polarizers before and after the sample. As a reference of reflectivity measurement, an aluminum mirror is replaced in the same position as the sample.

Report on fabricated chiral metasurfaces by femtosecond micromachining and lithographic techniques; metasurfaces made on vertically aligned carbon nanotubes. Feedback to WP1 for design optimization. (opens in new window)

Single layer chiral metasurfaces will be fabricated by writing arrays of chiral “meta-atoms” on the surface or subsurface layer of the dielectric and semiconductor substrates. The multi-layer structures will be fabricated by layer-by-layer writing via changing the position of the focal plane withing the substrate. The enhancing the rotatory power of the measurface will be performed by rotating substrate thus forming Moire patterns. The lithographic techniques will be used for formation of the chiral arrays of metal nanoparticles on the surface. Arrays of GaN HMETS plasmonic resonators will be grown using MBE method.

Publications

Recent advances in ultrafast laser nanostructuring of transparent materials

Author(s): P.G. Kazansky, Y. Lei, H. Wang, S. Shevtsov, M. Shribak and Y. Svirko
Published in: Proceedings of the 9th International Workshop on Nanocarbon Photonics and Optoelectronics, 2024, Page(s) 66, ISBN 978-952-61-5287-5
Publisher: University of Eastern Finland

Terahertz detection with optically gated vertical graphene nanowalls

Author(s): Petr A. Obraztsov, Vassilis Papadakis,Yuri Svirko, Alexander N. Obraztsov
Published in: Proceedings of the 9th international workshop on nanocarbon photonics and optoelectronics, 2024, Page(s) 51, ISBN 978-952-61-5287-5
Publisher: University of Eastern Finland

Optical properties and terahertz applications of one-dimensional nanocarbons

Author(s): R. R. Hartmann and M. E. Portnoi
Published in: Proceedings of the 9th International Workshop ”Nanocarbon Photonics and Optoelectronics“, 2024, ISBN 978-952-61-5287-5
Publisher: University of Eastern Finland

Strong and Broadband Pure Optical Activity in 3D Printed THz Chiral Metamaterials (opens in new window)

Author(s): Ioannis Katsantonis, Maria Manousidaki, Anastasios D. Koulouklidis, Christina Daskalaki, Ioannis Spanos, Constantinos Kerantzopoulos, Anna C. Tasolamprou, Costas M. Soukoulis, Eleftherios N. Economou, Stelios Tzortzakis, Maria Farsari, Maria Kafesaki
Published in: Advanced Optical Materials, 2023, Page(s) 2300238, ISSN 2195-1071
Publisher: WILEY-V C H
DOI: 10.1002/adom.202300238

Active Control of Bound States in the Continuum in Toroidal Metasurfaces (opens in new window)

Author(s): Fedor V. Kovalev, Andrey E. Miroshnichenko, Alexey A. Basharin, Hannes Toepfer, Ilya V. Shadrivov
Published in: Advanced Photonics Research, Issue 6, 2025, ISSN 2699-9293
Publisher: Wiley
DOI: 10.1002/adpr.202400070

Carbon‐Coated Moth‐Eye Structure: An Ultrabroadband THz‐DUV Near‐Perfect Absorber (opens in new window)

Author(s): Yuki Hakamada, Maria Cojocari, Mizuho Matoba, Shotaro Kawano, Haruyuki Sakurai, Kuniaki Konishi, Daniil Pashnev, Surya Revanth Ayyagari, Vytautas Janonis, Andrzej Urbanowicz, Saulius Tumėnas, Justinas Jorudas, Irmantas Kašalynas, Janna Pennanen, Adigun Deborah Amos, Aleksandr Saushin, Georgy Fedorov, Yuri Svirko, Polina Kuzhir
Published in: Advanced Optical Materials, 2025, Page(s) 2500948, ISSN 2195-1071
Publisher: Wiley
DOI: 10.1002/adom.202500948

Designer gapped and tilted Dirac cones in lateral graphene superlattices (opens in new window)

Author(s): A. Wild, R. R. Hartmann, E. Mariani, M. E. Portnoi
Published in: APL Quantum, Issue 2, 2025, Page(s) 026107, ISSN 2835-0103
Publisher: AIP Publishing
DOI: 10.1063/5.0251887

Ultrafast Laser Writing in Different Types of Silica Glass (opens in new window)

Author(s): Yuhao Lei, Huijun Wang, Linards Skuja, Bodo Kühn, Bernhard Franz, Yuri Svirko, Peter. G. Kazansky
Published in: Laser&Photonics Reviews, Issue 17(4), 2023, Page(s) 202200978, ISSN 1863-8899
Publisher: Wiley-VCH GmbH
DOI: 10.1002/lpor.202200978

Controlling ultrafast laser writing in silica glass by pulse temporal contrast (opens in new window)

Author(s): Yuhao Lei, Huijun Wang, Gholamreza Shayeganrad, Yuri Svirko, Peter G. Kazansky
Published in: Optics Letters, Issue 49, 2024, Page(s) 2385, ISSN 0146-9592
Publisher: Optical Society of America
DOI: 10.1364/ol.522307

Programmable metasurfaces for future photonic artificial intelligence (opens in new window)

Author(s): Loubnan Abou-Hamdan, Emil Marinov, Peter Wiecha, Philipp del Hougne, Tianyu Wang, Patrice Genevet
Published in: Nature Reviews Physics, Issue 7, 2025, Page(s) 331-347, ISSN 2522-5820
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/s42254-025-00831-7

Grating Theory Approach to Optics of Nanocomposites (opens in new window)

Author(s): Subhajit Bej, Toni Saastamoinen, Yuri P. Svirko, Jari Turunen
Published in: Materials, Issue 14/21, 2021, Page(s) 6359, ISSN 1996-1944
Publisher: MDPI Open Access Publishing
DOI: 10.3390/ma14216359

On the generalized Snell–Descartes laws, shock waves, water wakes, and Cherenkov radiation (opens in new window)

Author(s): Patrice Genevet, Nate Wright, Jayden Johnson, Aloke Jana, Emil Marinov, Loubnan Abou-Hamdan
Published in: Nanophotonics, 2025, ISSN 2192-8606
Publisher: Walter de Gruyter GmbH
DOI: 10.1515/nanoph-2024-0447

Selective superinvisibility effect via compound anapole (opens in new window)

Author(s): Alexey A. Basharin; Esmaeel Zanganeh; Anar K. Ospanova; Polina Kapitanova; Andrey B. Evlyukhin
Published in: Physical Review B, Issue 107, 2023, Page(s) 155104, ISSN 2469-9950
Publisher: Amarican Physical Society
DOI: 10.1103/physrevb.107.155104

Bipolar electron waveguides in two-dimensional materials with tilted Dirac cones (opens in new window)

Author(s): R.R. Hartmann, M.E. Portnoi
Published in: Physica Scripta, Issue Volume 99, Number 4, 2024, Page(s) 045214, ISSN 0031-8949
Publisher: Royal Swedish Academy of Sciences
DOI: 10.1088/1402-4896/ad2b34

Broadband transparency of Babinet complementary metamaterials. (opens in new window)

Author(s): Ospanova, A. Cojocari, M. Lamberti, P. Plyushch, A. Matekovits, L. Svirko, Yu. Kuzhir, P. Basharin, A.
Published in: Applied physics letters, Issue 122 (23), 2023, Page(s) 231702, ISSN 0003-6951
Publisher: American Institute of Physics
DOI: 10.1063/5.0152841

Stark Effect Tunable Terahertz Transitions in Finite Carbon Chains (opens in new window)

Author(s): Raymond A. Ng, Alexey Kucherik, Mikhail E. Portnoi, Richard R. Hartmann
Published in: Small Structures, 2025, ISSN 2688-4062
Publisher: Wiley
DOI: 10.1002/sstr.202500266

Increasing Efficiency of Ultrafast Laser Writing Via Nonlocality of Light-Matter Interaction (opens in new window)

Author(s): Huijun Wang, Yuhao Lei, Gholamreza Shayeganrad, Yuri Svirko, Peter G. Kazansky
Published in: Laser&Photonics Reviews, 2024, Page(s) 2301143, ISSN 1863-8880
Publisher: Wiley - VCH Verlag GmbH & CO. KGaA
DOI: 10.1002/lpor.202301143

3D-printed mirror-less helicity preserving metasurface “mirror” for THz applications (opens in new window)

Author(s): Jiaruo Yan, Ioannis Katsantonis, Savvas Papamakarios, Panagiotis Konstantakis, Michael Loulakis, Thomas Koschny, Maria Farsari, Stelios Tzortzakis, Maria Kafesaki
Published in: Nanophotonics, 2025, Page(s) 0711, ISSN 2192-8606
Publisher: Walter de Gruyter GmbH
DOI: 10.1515/nanoph-2024-0711

Efficient ultrafast laser writing with elliptical polarization (opens in new window)

Author(s): Yuhao Lei, Gholamreza Shayeganrad, Huijun Wang, Masaaki Sakakura, Yanhao Yu, Lei Wang, Dmitrii Kliukin & Peter G. Kazansky
Published in: Light: Science & Applications, Issue 12, 2023, Page(s) 74, ISSN 2047-7538
Publisher: SpringerNature
DOI: 10.1038/s41377-023-01098-2

Cactus-like Metamaterial Structures for Electromagnetically Induced Transparency at THz frequencies (opens in new window)

Author(s): Savvas Papamakarios, Odysseas Tsilipakos, Ioannis Katsantonis, Anastasios D. Koulouklidis, Maria Manousidaki, Gordon Zyla, Christina Daskalaki, Stelios Tzortzakis, Maria Kafesaki, Maria Farsari
Published in: ACS Photonics, Issue 12, 2025, Page(s) 87-97, ISSN 2330-4022
Publisher: American Chemical Society
DOI: 10.1021/acsphotonics.4c01179

Giant enhancement of nonreciprocity in gyrotropic heterostructures (opens in new window)

Author(s): I. Katsantonis, A. C. Tasolamprou, T. Koschny, E. N. Economou, M. Kafesaki and C. Valagiannopoulos
Published in: Advanced Optical Materials, Issue 13, 2023, Page(s) 21986, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-023-48503-9

The Surface Photogalvanic and Photon Drag Effects in Ag/Pd Metal-Semiconductor Nanocomposite (opens in new window)

Author(s): Aleksandr S. Saushin, Gennady M. Mikheev, Viatcheslav V. Vanyukov, Yuri P. Svirko
Published in: Nanomaterials, Issue 11/11, 2021, Page(s) 2827, ISSN 2079-4991
Publisher: MDPI
DOI: 10.3390/nano11112827

Broadband transparency in terahertz free-standing anapole metasurface (opens in new window)

Author(s): Isaac Appiah Otoo, Alexey Basharin, Grigorii Matveev, Georgy Fedorov, Petri Karvinen, Surya Revanth Ayyagari, Daniil Pashnev, Andrzej Urbanowicz, Justinas Jorudas, Irmantas Kašalynas, Yuri Svirko, Polina Kuzhir
Published in: Applied Physics Letters, Issue 125, 2024, Page(s) 261701, ISSN 0003-6951
Publisher: American Institute of Physics
DOI: 10.1063/5.0246993

Ultrathin, Dynamically Controllable Circularly Polarized Emission Laser Enabled by Resonant Chiral Metasurfaces (opens in new window)

Author(s): Ioannis Katsantonis, Anna C. Tasolamprou, Eleftherios N. Economou, Thomas Koschny, Maria Kafesaki
Published in: ACS Photonics, Issue 12, 2025, Page(s) 71-78, ISSN 2330-4022
Publisher: American Chemical Society
DOI: 10.1021/acsphotonics.4c01005

Modified multipoles in photonics (opens in new window)

Author(s): Ospanova, Anar; Cojocari, Maria, Basharin, Alexey
Published in: Physical Review B, Issue 107, 2023, Page(s) 035156, ISSN 2469-9950
Publisher: American Institute of Physics
DOI: 10.1103/physrevb.107.035156

Terahertz Absorber with Graphene Enhanced Polymer Hemispheres Array (opens in new window)

Author(s): Alesia Paddubskaya, Nadzeya Valynets, Sergey Maksimenko, Mukesh Kumar, Marian Baah, Markku Pekkarinen, Yuri Svirko, Gintaras Valušis, Polina Kuzhir
Published in: Nanomaterials, Issue 11(10), 2021, Page(s) 2494, ISSN 2079-4991
Publisher: MDPI
DOI: 10.3390/nano11102494

Ultrafast exciton trapping dynamics in oxygen-functionalized single walled carbon nanotubes (opens in new window)

Author(s): Timofei Eremina, Rakesh Dhamab, Humeyra Caglayan, Petr Obraztsov
Published in: Carbon, Issue 219, 2024, Page(s) 118837, ISSN 1873-3891
Publisher: Elsevier
DOI: 10.1016/j.carbon.2024.118837

Exciton dynamics in functionalized carbon nanotubes

Author(s): Eremin, Timofei
Published in: PhD Thesis, 2024, ISBN 978-952-61-5369-8
Publisher: University of Eastern Finland

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