Shuai Li, Zeyu Wu, Xiaoshan Liu, Qian Ye, Guiqiang Liu, Jing Chen, Wei Du, Chaojun Tang, Zhengqi Liu
{"title":"Monochromatic Polarization‐Sensitive Photothermoelectric Detection via Plasmonic Quasi‐BICs","authors":"Shuai Li, Zeyu Wu, Xiaoshan Liu, Qian Ye, Guiqiang Liu, Jing Chen, Wei Du, Chaojun Tang, Zhengqi Liu","doi":"10.1002/lpor.202500477","DOIUrl":null,"url":null,"abstract":"Bound states in the continuum (BICs) provide a robust mechanism for enhancing the resonance quality factor (<jats:italic>Q</jats:italic>‐factor) by confining light in non‐radiative modes. Due to the large intrinsic losses, the <jats:italic>Q</jats:italic>‐factors of plasmonic resonances are typically limited. A plasmonic photothermoelectric metasurface based monochromatic polarization detector with a high polarization ratio () is proposed and simultaneously realize linear sensing with the polarization angle sensitivity of 0.67 µA (W·deg)<jats:sup>−1</jats:sup> by the excitation of high‐<jats:italic>Q</jats:italic> quasi‐BICs resonances. In general, with the purpose to achieve the maximal circular dichroism (<jats:italic>CD</jats:italic>) response, symmetry breaking is introduced, which inevitably leads to the radiative losses and the significantly decreased <jats:italic>Q</jats:italic>‐factor, therefore fundamentally limiting the simultaneous realization of polarization modulation and high monochromaticity. Herein, a circular polarization‐sensitive device is further realized () with a high <jats:italic>CD</jats:italic> (>0.9) response under the situation of intrinsic chirality. Such simultaneous performance of high PR, <jats:italic>CD</jats:italic>, and sharp resonance are related to the fact that optical absorption is primarily dominated by the grating walls while the offset of the geometry perturbation serves only to break the mirror symmetry and generate the <jats:italic>CD</jats:italic> response. Our research provides a novel approach for on‐chip optical devices in high‐speed monochromatic detection.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"657 1","pages":""},"PeriodicalIF":9.8000,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Laser & Photonics Reviews","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1002/lpor.202500477","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Bound states in the continuum (BICs) provide a robust mechanism for enhancing the resonance quality factor (Q‐factor) by confining light in non‐radiative modes. Due to the large intrinsic losses, the Q‐factors of plasmonic resonances are typically limited. A plasmonic photothermoelectric metasurface based monochromatic polarization detector with a high polarization ratio () is proposed and simultaneously realize linear sensing with the polarization angle sensitivity of 0.67 µA (W·deg)−1 by the excitation of high‐Q quasi‐BICs resonances. In general, with the purpose to achieve the maximal circular dichroism (CD) response, symmetry breaking is introduced, which inevitably leads to the radiative losses and the significantly decreased Q‐factor, therefore fundamentally limiting the simultaneous realization of polarization modulation and high monochromaticity. Herein, a circular polarization‐sensitive device is further realized () with a high CD (>0.9) response under the situation of intrinsic chirality. Such simultaneous performance of high PR, CD, and sharp resonance are related to the fact that optical absorption is primarily dominated by the grating walls while the offset of the geometry perturbation serves only to break the mirror symmetry and generate the CD response. Our research provides a novel approach for on‐chip optical devices in high‐speed monochromatic detection.
期刊介绍:
Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications.
As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics.
The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.