Beyond Bloch modes: Ultra-broadband absorber with a periodic dielectric-dielectric-metal multilayer.
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| Title: | Beyond Bloch modes: Ultra-broadband absorber with a periodic dielectric-dielectric-metal multilayer. |
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| Authors: | Liao, Yan-Lin1 (AUTHOR) liaoyl@ahu.edu.cn, Zhang, Haojie1 (AUTHOR), Dong, Shijia2 (AUTHOR), Xiāo, Boyu2 (AUTHOR), Ye, Bingxue2 (AUTHOR), Chen, Zhenggen1 (AUTHOR), Zhang, Wen1 (AUTHOR) wenzhang@ahu.edu.cn, Zhao, Yan3 (AUTHOR) zhaoyan@ahmu.edu.cn |
| Source: | Optics & Laser Technology. Jun2026, Vol. 198, pN.PAG-N.PAG. 1p. |
| Subjects: | Bloch's theorem, Optical multilayers, Optical resonators, Photodetectors, Solar thermal energy |
| Abstract: | Overcoming the bandwidth limitation imposed by Bloch's theorem remains a challenge in designing metamaterial-based ultra-broadband absorbers. In this work, we propose and experimentally validate a strategy that overcomes this constraint using a periodic dielectric-dielectric-metal multilayer structure. The advantage lies in deconstructing the single dielectric layer in a conventional Bloch-resonant unit cell into two distinct dielectric sub-layers, each with a quarter-wavelength optical thickness, thereby forming an embedded lossy Fabry-Pérot cavity. This architecture synergistically combines antireflection and strong localized field enhancement effects, effectively suppressing the absorption dip induced by the Bloch mode. As a result, the proposed absorber exhibits an average absorption exceeding 94% across the 451–3100 nm range and maintains 87% in the onset band (400–451 nm), covering the visible to mid-infrared spectrum. Furthermore, the absorption cutoff is flexibly governed by the photonic topological transition (PTT). This work provides a design route to transcend the limitations of Bloch modes and paves the way for advanced applications in solar thermal harvesting, infrared stealth, and broadband photodetection. [ABSTRACT FROM AUTHOR] |
| Copyright of Optics & Laser Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193058880 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Beyond Bloch modes: Ultra-broadband absorber with a periodic dielectric-dielectric-metal multilayer. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Liao%2C+Yan-Lin%22">Liao, Yan-Lin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liaoyl@ahu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Haojie%22">Zhang, Haojie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dong%2C+Shijia%22">Dong, Shijia</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiāo%2C+Boyu%22">Xiāo, Boyu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Bingxue%22">Ye, Bingxue</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Zhenggen%22">Chen, Zhenggen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wen%22">Zhang, Wen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wenzhang@ahu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Yan%22">Zhao, Yan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> zhaoyan@ahmu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Optics+%26+Laser+Technology%22">Optics & Laser Technology</searchLink>. Jun2026, Vol. 198, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Bloch's+theorem%22">Bloch's theorem</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+multilayers%22">Optical multilayers</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+resonators%22">Optical resonators</searchLink><br /><searchLink fieldCode="DE" term="%22Photodetectors%22">Photodetectors</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+thermal+energy%22">Solar thermal energy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Overcoming the bandwidth limitation imposed by Bloch's theorem remains a challenge in designing metamaterial-based ultra-broadband absorbers. In this work, we propose and experimentally validate a strategy that overcomes this constraint using a periodic dielectric-dielectric-metal multilayer structure. The advantage lies in deconstructing the single dielectric layer in a conventional Bloch-resonant unit cell into two distinct dielectric sub-layers, each with a quarter-wavelength optical thickness, thereby forming an embedded lossy Fabry-Pérot cavity. This architecture synergistically combines antireflection and strong localized field enhancement effects, effectively suppressing the absorption dip induced by the Bloch mode. As a result, the proposed absorber exhibits an average absorption exceeding 94% across the 451–3100 nm range and maintains 87% in the onset band (400–451 nm), covering the visible to mid-infrared spectrum. Furthermore, the absorption cutoff is flexibly governed by the photonic topological transition (PTT). This work provides a design route to transcend the limitations of Bloch modes and paves the way for advanced applications in solar thermal harvesting, infrared stealth, and broadband photodetection. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Optics & Laser Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.optlastec.2026.114953 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Bloch's theorem Type: general – SubjectFull: Optical multilayers Type: general – SubjectFull: Optical resonators Type: general – SubjectFull: Photodetectors Type: general – SubjectFull: Solar thermal energy Type: general Titles: – TitleFull: Beyond Bloch modes: Ultra-broadband absorber with a periodic dielectric-dielectric-metal multilayer. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Liao, Yan-Lin – PersonEntity: Name: NameFull: Zhang, Haojie – PersonEntity: Name: NameFull: Dong, Shijia – PersonEntity: Name: NameFull: Xiāo, Boyu – PersonEntity: Name: NameFull: Ye, Bingxue – PersonEntity: Name: NameFull: Chen, Zhenggen – PersonEntity: Name: NameFull: Zhang, Wen – PersonEntity: Name: NameFull: Zhao, Yan IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00303992 Numbering: – Type: volume Value: 198 Titles: – TitleFull: Optics & Laser Technology Type: main |
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