High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% Absorption
Quantum well infrared photodetectors (QWIPs) are popular due to their following advantages: low cost, maturity of manufacturing, high uniformity, ease of wavelength adjustment, resistance to heat, and resistance to ionizing radiation. However, their low absorption efficiency due to their unique anis...
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MDPI AG
2024-12-01
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| author | Zihui Ge Bo Cheng Kunpeng Zhai Guofeng Song |
| author_facet | Zihui Ge Bo Cheng Kunpeng Zhai Guofeng Song |
| author_sort | Zihui Ge |
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| description | Quantum well infrared photodetectors (QWIPs) are popular due to their following advantages: low cost, maturity of manufacturing, high uniformity, ease of wavelength adjustment, resistance to heat, and resistance to ionizing radiation. However, their low absorption efficiency due to their unique anisotropic absorption properties and ohmic loss of the metal grating severely limit their further adoption. We cleverly used cascaded dielectric metasurfaces to replace the traditional single-layer metal grating, which increased the absorption efficiency to near the upper limit of 100%. By analyzing the near-field profile of the electric field of the miniaturized device, we found that the upper grating, QWIP, and lower grating formed a high-efficiency FP cavity with a strong photon localization capability, allowing the microdevice to effectively achieve 99.3% absorption. In addition, QWIPs with cascade gratings can be incorporated into a polarimeter, allowing for the comprehensive detection of linear polarization information at a wavelength of 14 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">μ</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> through rational rotations. Our proposed double-layer grating coupling method can be considered a technology that can effectively address the low-absorption problem associated with QWIPs. |
| format | Article |
| id | doaj-art-21f693e20dfc4cf98534fff54ced913c |
| institution | OA Journals |
| issn | 2073-4352 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj-art-21f693e20dfc4cf98534fff54ced913c2025-08-20T02:00:45ZengMDPI AGCrystals2073-43522024-12-011412108810.3390/cryst14121088High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% AbsorptionZihui Ge0Bo Cheng1Kunpeng Zhai2Guofeng Song3Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaChengdu Polytechnic, Innovation and Practice Base for Postdoctors, Chengdu 610041, ChinaInstitute of Intelligent Photonics, Nankai University, Tianjin 300071, ChinaInstitute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaQuantum well infrared photodetectors (QWIPs) are popular due to their following advantages: low cost, maturity of manufacturing, high uniformity, ease of wavelength adjustment, resistance to heat, and resistance to ionizing radiation. However, their low absorption efficiency due to their unique anisotropic absorption properties and ohmic loss of the metal grating severely limit their further adoption. We cleverly used cascaded dielectric metasurfaces to replace the traditional single-layer metal grating, which increased the absorption efficiency to near the upper limit of 100%. By analyzing the near-field profile of the electric field of the miniaturized device, we found that the upper grating, QWIP, and lower grating formed a high-efficiency FP cavity with a strong photon localization capability, allowing the microdevice to effectively achieve 99.3% absorption. In addition, QWIPs with cascade gratings can be incorporated into a polarimeter, allowing for the comprehensive detection of linear polarization information at a wavelength of 14 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">μ</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> through rational rotations. Our proposed double-layer grating coupling method can be considered a technology that can effectively address the low-absorption problem associated with QWIPs.https://www.mdpi.com/2073-4352/14/12/1088QWIPabsorptioncascaded dielectric metasurfaceslinear polarization |
| spellingShingle | Zihui Ge Bo Cheng Kunpeng Zhai Guofeng Song High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% Absorption Crystals QWIP absorption cascaded dielectric metasurfaces linear polarization |
| title | High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% Absorption |
| title_full | High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% Absorption |
| title_fullStr | High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% Absorption |
| title_full_unstemmed | High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% Absorption |
| title_short | High-Efficiency Long-Wave Infrared Quantum Well Photodetector Based on Cascaded Dielectric Metasurfaces with Almost 100% Absorption |
| title_sort | high efficiency long wave infrared quantum well photodetector based on cascaded dielectric metasurfaces with almost 100 absorption |
| topic | QWIP absorption cascaded dielectric metasurfaces linear polarization |
| url | https://www.mdpi.com/2073-4352/14/12/1088 |
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