Research output: Contribution to journal › Article › peer-review
Efficient Anomalous Refraction of THz Beams With a Multilayer Metal–Polymer Huygens' Metasurface. / Кузнецов, Сергей Александрович; Tumashov, M.; Killamsetty, V. K. et al.
In: IEEE Transactions on Terahertz Science and Technology, Vol. 14, No. 1, 2024, p. 109-121.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Efficient Anomalous Refraction of THz Beams With a Multilayer Metal–Polymer Huygens' Metasurface
AU - Кузнецов, Сергей Александрович
AU - Tumashov, M.
AU - Killamsetty, V. K.
AU - Lazorskii, Pavel
AU - Epstein, A.
AU - Glybovski, S.
N1 - Russian Science Foundation (Grant Number: 19-79-10260) Efficient Anomalous Refraction of THz Beams With a Multilayer Metal–Polymer Huygens' Metasurface / S. Kuznetsov, M. Tumashov, V. K. Killamsetty [et al.] // IEEE Transactions on Terahertz Science and Technology. – 2024. – Vol. 14, No. 1. – P. 109-121. – DOI 10.1109/tthz.2023.3332302.
PY - 2024
Y1 - 2024
N2 - We describe design principles, fabrication techniques, and experimental testing for a Huygens' metasurface which deflects a normally incident radiation beam at $f\approx 0.172$ THz towards an angle of 52$^\circ$ in transmission. The metasurface is comprised of a cascade of five spatially-modulated aluminum impedance sheets photolithographically patterned on 100-$\mu$m-thick polypropylene substrates, stacked together via ultrathin adhesive layers. The physical geometries realizing the five-layer Huygens' meta-atoms are designed using a semi-analytical model, while the expected deflection, associated with negligible reflection and low diffractive losses, is verified by full-wave simulations and measurements. For the implemented deflector, with a working aperture diameter of 75 mm, the experimentally measured refraction efficiency reached 58%, with 20% and 22% losses attributed to spurious diffraction and absorption, respectively. Despite the suboptimal performance, our results establish the proposed methods of synthesis and fabrication as promising for realizing quasi-optical THz components with unique characteristics, unattainable at this challenging regime with alternative approaches.
AB - We describe design principles, fabrication techniques, and experimental testing for a Huygens' metasurface which deflects a normally incident radiation beam at $f\approx 0.172$ THz towards an angle of 52$^\circ$ in transmission. The metasurface is comprised of a cascade of five spatially-modulated aluminum impedance sheets photolithographically patterned on 100-$\mu$m-thick polypropylene substrates, stacked together via ultrathin adhesive layers. The physical geometries realizing the five-layer Huygens' meta-atoms are designed using a semi-analytical model, while the expected deflection, associated with negligible reflection and low diffractive losses, is verified by full-wave simulations and measurements. For the implemented deflector, with a working aperture diameter of 75 mm, the experimentally measured refraction efficiency reached 58%, with 20% and 22% losses attributed to spurious diffraction and absorption, respectively. Despite the suboptimal performance, our results establish the proposed methods of synthesis and fabrication as promising for realizing quasi-optical THz components with unique characteristics, unattainable at this challenging regime with alternative approaches.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85177066015&origin=inward&txGid=1ec2fa61c208d5ac24846d1955253d12
UR - https://www.mendeley.com/catalogue/b34a3617-53e9-301c-b0a1-70995b2a9679/
UR - https://www.elibrary.ru/item.asp?id=64907852
U2 - 10.1109/tthz.2023.3332302
DO - 10.1109/tthz.2023.3332302
M3 - Article
VL - 14
SP - 109
EP - 121
JO - IEEE Transactions on Terahertz Science and Technology
JF - IEEE Transactions on Terahertz Science and Technology
SN - 2156-342X
IS - 1
ER -
ID: 59233863