Photothermal Meta-surface Absorber with Ultra-low Profile Designed for Terahertz Micro-bolometer

Hailiang Zhu, Kai Wang, Ganyu Liu, Yuwei Qiu, Jinchao Mou, Gao Wei

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a broadband terahertz meta-surface absorber which is designed to be the radiation coupling module of terahertz micro-bolometer. The unit cell of proposed compound meta-surface consists of several basic square unit cells, specifically, 36 basic square unit cells of three different sizes are arranged in an array, perform chessboard-like layout to form a compound unit cell. Simulated absorbing rate of the proposed meta-surface absorber is higher than 80% from 4.46 to 5.76THz (25.4% fractional bandwidth) with a thickness of merely 1.1μm (0.018λ). Since the symmetrical layout of compound unit cell, the absorbing rate keeps stable for incidence with different polarization angles. Moreover, the photothermal response is 8.5Kmm2/W by multi-physics simulation, which shows great potential to improve the terahertz micro-bolometer.

Original languageEnglish
Title of host publication2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1098-1099
Number of pages2
ISBN (Electronic)9781665496582
DOIs
StatePublished - 2022
Event2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Denver, United States
Duration: 10 Jul 202215 Jul 2022

Publication series

Name2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings

Conference

Conference2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022
Country/TerritoryUnited States
CityDenver
Period10/07/2215/07/22

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