Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region

Xiaoluo He; Alex M. H. Wong

doi:10.1109/AP-S/INC-USNC-URSI52054.2024.10687070

Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region

Xiaoluo He
, Alex M. H. Wong^*

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

1 Citation (Scopus)

Abstract

Metalenses offer great potential for flexible manipulation of the electromagnetic field. However, metalens with tunable focal length and achromatic performance remains a challenge. This paper constructing a polarization-dependent superposition varifocal metalens with achromatic focusing performance in the THz region (270 - 330 GHz). The focal length of the metalens can be tuned linearly by changing the polarization angle of incidence, allowing for a tunable range of 3λ_c (where λ_c is the wavelength at 300 GHz). Another key advantages of the varifocal metalens is that it can maintain a stable focal length for a given polarization incidence across a broad bandwidth of 20%. Within the operation band, the varifocal metalens exhibits high focusing efficiency and achieves diffraction-limited spot sizes, ensuring high-resolution imaging and sensing capabilities. © 2024 IEEE.

Original language	English
Title of host publication	2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting (AP-S/INC-USNC-URSI) - Proceedings
Publisher	IEEE
Pages	835-836
ISBN (Electronic)	979-8-3503-6990-8
ISBN (Print)	979-8-3503-6991-5
DOIs	https://doi.org/10.1109/AP-S/INC-USNC-URSI52054.2024.10687070
Publication status	Published - 2024
Event	2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting (AP-S/INC-USNC-URSI 2024) - Fortezza da Basso, Florence, Italy Duration: 14 Jul 2024 → 19 Jul 2024 https://2024.apsursi.org/ https://2024.apsursi.org/index.php

Publication series

Name	IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)	1522-3965
ISSN (Electronic)	1947-1491

Conference

Conference	2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting (AP-S/INC-USNC-URSI 2024)
Abbreviated title	IEEE AP-S/URSI 2024
Place	Italy
City	Florence
Period	14/07/24 → 19/07/24
Internet address	https://2024.apsursi.org/ https://2024.apsursi.org/index.php

Funding

This work was supported by a Collaborative Research Fund (Grant C6012-20G) from the Research Grants Council of Hong Kong and a Contract Research Fund (Grant 9239058).

RGC Funding Information

RGC-funded

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10.1109/AP-S/INC-USNC-URSI52054.2024.10687070

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He, X., & Wong, A. M. H. (2024). Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region. In 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting (AP-S/INC-USNC-URSI) - Proceedings (pp. 835-836). (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)). IEEE. https://doi.org/10.1109/AP-S/INC-USNC-URSI52054.2024.10687070

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title = "Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region",

abstract = "Metalenses offer great potential for flexible manipulation of the electromagnetic field. However, metalens with tunable focal length and achromatic performance remains a challenge. This paper constructing a polarization-dependent superposition varifocal metalens with achromatic focusing performance in the THz region (270 - 330 GHz). The focal length of the metalens can be tuned linearly by changing the polarization angle of incidence, allowing for a tunable range of 3λc (where λc is the wavelength at 300 GHz). Another key advantages of the varifocal metalens is that it can maintain a stable focal length for a given polarization incidence across a broad bandwidth of 20\%. Within the operation band, the varifocal metalens exhibits high focusing efficiency and achieves diffraction-limited spot sizes, ensuring high-resolution imaging and sensing capabilities. {\textcopyright} 2024 IEEE.",

author = "Xiaoluo He and Wong, \{Alex M. H.\}",

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doi = "10.1109/AP-S/INC-USNC-URSI52054.2024.10687070",

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booktitle = "2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting (AP-S/INC-USNC-URSI) - Proceedings",

address = "United States",

note = "2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting (AP-S/INC-USNC-URSI 2024), IEEE AP-S/URSI 2024 ; Conference date: 14-07-2024 Through 19-07-2024",

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He, X & Wong, AMH 2024, Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region. in 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting (AP-S/INC-USNC-URSI) - Proceedings. IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), IEEE, pp. 835-836, 2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting (AP-S/INC-USNC-URSI 2024), Florence, Italy, 14/07/24. https://doi.org/10.1109/AP-S/INC-USNC-URSI52054.2024.10687070

Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region. / He, Xiaoluo ; Wong, Alex M. H.
2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting (AP-S/INC-USNC-URSI) - Proceedings. IEEE, 2024. p. 835-836 (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region

AU - He, Xiaoluo

AU - Wong, Alex M. H.

PY - 2024

Y1 - 2024

N2 - Metalenses offer great potential for flexible manipulation of the electromagnetic field. However, metalens with tunable focal length and achromatic performance remains a challenge. This paper constructing a polarization-dependent superposition varifocal metalens with achromatic focusing performance in the THz region (270 - 330 GHz). The focal length of the metalens can be tuned linearly by changing the polarization angle of incidence, allowing for a tunable range of 3λc (where λc is the wavelength at 300 GHz). Another key advantages of the varifocal metalens is that it can maintain a stable focal length for a given polarization incidence across a broad bandwidth of 20%. Within the operation band, the varifocal metalens exhibits high focusing efficiency and achieves diffraction-limited spot sizes, ensuring high-resolution imaging and sensing capabilities. © 2024 IEEE.

AB - Metalenses offer great potential for flexible manipulation of the electromagnetic field. However, metalens with tunable focal length and achromatic performance remains a challenge. This paper constructing a polarization-dependent superposition varifocal metalens with achromatic focusing performance in the THz region (270 - 330 GHz). The focal length of the metalens can be tuned linearly by changing the polarization angle of incidence, allowing for a tunable range of 3λc (where λc is the wavelength at 300 GHz). Another key advantages of the varifocal metalens is that it can maintain a stable focal length for a given polarization incidence across a broad bandwidth of 20%. Within the operation band, the varifocal metalens exhibits high focusing efficiency and achieves diffraction-limited spot sizes, ensuring high-resolution imaging and sensing capabilities. © 2024 IEEE.

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DO - 10.1109/AP-S/INC-USNC-URSI52054.2024.10687070

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 979-8-3503-6991-5

T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)

SP - 835

EP - 836

BT - 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting (AP-S/INC-USNC-URSI) - Proceedings

PB - IEEE

T2 - 2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting (AP-S/INC-USNC-URSI 2024)

Y2 - 14 July 2024 through 19 July 2024

ER -

He X , Wong AMH. Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region. In 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting (AP-S/INC-USNC-URSI) - Proceedings. IEEE. 2024. p. 835-836. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)). Epub 2024 Sept 30. doi: 10.1109/AP-S/INC-USNC-URSI52054.2024.10687070

Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region

Abstract

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CRF-ExtU-Lead: Harnessing the "Fog" of Ambient RF Waves

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Polarization-Dependent Varifocal Metalens with Achromatic Focusing in THz Region

Abstract

Publication series

Conference

Funding

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

CRF-ExtU-Lead: Harnessing the "Fog" of Ambient RF Waves

Cite this