Photonics and Nanostructures-Fundamentals and Applications最新文献_第6页

Gaussian grating for enhancing light absorption by amorphous silicon thin-film solar cells 用于增强非晶硅薄膜太阳能电池光吸收的高斯光栅

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-03-07 DOI: 10.1016/j.photonics.2024.101247

Mohammad Eskandari

引用次数: 0

Large area Terahertz digitated photoconductive antennas based on a single high resistivity metal and nanoplasmonic electrode 基于单一高电阻率金属和纳米光电导电极的大面积太赫兹数字化光电导天线

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-03-02 DOI: 10.1016/j.photonics.2024.101248

Anna De Vetter, Chao Song, Martin Mičica, Jerome Tignon, Juliette Mangeney, José Palomo, Sukhdeep Dhillon

{"title":"Large area Terahertz digitated photoconductive antennas based on a single high resistivity metal and nanoplasmonic electrode","authors":"Anna De Vetter, Chao Song, Martin Mičica, Jerome Tignon, Juliette Mangeney, José Palomo, Sukhdeep Dhillon","doi":"10.1016/j.photonics.2024.101248","DOIUrl":"10.1016/j.photonics.2024.101248","url":null,"abstract":"<div><p>Optical excited photoconductive antennas are a central technology for the Terahertz (THz) domain, crucial for both emitting and detecting THz radiation. This work proposes and experimentally realises a new approach in digitated photoconductive antennas (d-PCAs) based on a single digitated high resistivity metal contact with integrated resistances as voltage dividers. This permits a uniform applied electric field over a large surface area and a single step device processing procedure, simplifying the device realisation. This concept is further combined with digitated plasmonic nano-antennas that permits to enhance the light-matter interaction. Through femtosecond optical excitation of such structures, THz pulses can be generated efficiently through this device. Further, for the plasmonic d-PCA, the detected THz electric field of the device shows the effect of polarisation of the incident IR beam, highlighting the role of the nanostructured digitated contacts. This work is supported by electromagnetic simulations showing the optical and THz response of this new type of photoconductive antenna with integrated resistances.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"59 ","pages":"Article 101248"},"PeriodicalIF":2.7,"publicationDate":"2024-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1569441024000233/pdfft?md5=0f202330482ff99c3eaa93fdc5c841b3&pid=1-s2.0-S1569441024000233-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140045481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Broadband characterization of the spectral responsivity of thermoelectrically-coupled nanoantennas 热电耦合纳米天线光谱响应性的宽带特性分析

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-22 DOI: 10.1016/j.photonics.2024.101242

Chao Dong , Gergo P. Szakmany , Hadrian Aquino , Wolfgang Porod , Alexei O. Orlov , Edward C. Kinzel , Gary H. Bernstein , David Burghoff

{"title":"Broadband characterization of the spectral responsivity of thermoelectrically-coupled nanoantennas","authors":"Chao Dong , Gergo P. Szakmany , Hadrian Aquino , Wolfgang Porod , Alexei O. Orlov , Edward C. Kinzel , Gary H. Bernstein , David Burghoff","doi":"10.1016/j.photonics.2024.101242","DOIUrl":"10.1016/j.photonics.2024.101242","url":null,"abstract":"<div><p>Thermoelectrically-coupled nanoantennas (TECNAs)—nanoantennas that use the Seebeck effect to detect radiation—are a promising modality for spectrally resolved detection in the infrared. By tailoring the geometry of a nanoantenna coupled to a micro-cavity, their responsivity and spectral selectivity can be carefully designed. However, to date no measurements have directly established the spectral response of these detectors over a large frequency span in the infrared regime, particularly from 2 μm to 20 μm. In this work, we provide a comprehensive analysis of the spectral selectivity of TECNAs operating within the mid- and long-wave infrared (MWIR and LWIR) regions. We engineer arrays of detectors at 5.5 μm, 10.6 μm, and 14 μm, and we verify their selectivity using polarization-dependent Fourier-transform infrared spectroscopy (FTIR). We also show that the response can be tailored using a combination of antenna and cavity design. Our results not only underscore the potential of TECNAs in advancing sensing applications within the MWIR and LWIR domains, but also offer a promising direction for enhancing other detector modalities.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"59 ","pages":"Article 101242"},"PeriodicalIF":2.7,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139950151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Taking advantage of an axisymmetric plasmonic structure and grooves to nanofocus and ultraenhance a radially polarized electric field 利用轴对称质子结构和凹槽实现纳米聚焦和超增强径向极化电场

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-16 DOI: 10.1016/j.photonics.2024.101240

Fatemeh Salmeh, Masoud Mohebbi

引用次数: 0

Chip-scale mid-infrared digitalized computational spectrometer powered by silicon photonics MEMS technology 采用硅光子 MEMS 技术的芯片级中红外数字化计算光谱仪

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-01 DOI: 10.1016/j.photonics.2024.101231

Haoyang Sun , Qifeng Qiao , Chengkuo Lee , Guangya Zhou

{"title":"Chip-scale mid-infrared digitalized computational spectrometer powered by silicon photonics MEMS technology","authors":"Haoyang Sun , Qifeng Qiao , Chengkuo Lee , Guangya Zhou","doi":"10.1016/j.photonics.2024.101231","DOIUrl":"10.1016/j.photonics.2024.101231","url":null,"abstract":"<div><p>Miniaturized spectrometers are attracting widespread interest due to the rising demand for portable spectroscopic applications. While the chip-scale spectrometers are widely investigated using silicon photonics technology, few research have addressed the need for a mid-infrared (MIR) integrated chip-scale spectrometer due to the lack of an effective reconfigurable photonics approach. In this paper, we present a novel solution using silicon photonics MEMS technology in the MIR region (3.6–5 µm wavelength range). We adopt a computational spectrometry scheme using the digitalized control of cascaded MEMS-tunable waveguide couplers. The MEMS waveguide couplers are operated in digital on/off mode, thus making the device immune to driving voltage fluctuations and robust for on-chip field sensing applications. Moreover, a comprehensive numerical analysis method is discussed to systematically evaluate the performance of the computational spectrometer, including its resolution and operational bandwidth. As a proof-of-concept, a chip-scale spectrometer realized by seven cascaded MEMS-actuated waveguide coupler is demonstrated. The sparse spectral reconstruction is demonstrated in the wavelength range from 3.65 to 4.1 µm and the dual-peaks reconstruction results indicate a resolution of 8 nm. Besides, response time and power consumption of the proposed device are experimentally characterized. Benefitting from good scalability, the spectral resolution can be further improved by increasing the number of waveguide coupler stages. The proposed work has the potential to realize lab-on-a-chip applications with advances in MIR silicon photonics. © 2001 Elsevier Science. All rights reserved.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101231"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1569441024000063/pdfft?md5=bed374d080af912058f5628b8b071dfd&pid=1-s2.0-S1569441024000063-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139587808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxidation effect on optical properties of integrated waveguides based on porous silicon layers at mid-infrared wavelength 氧化对中红外波长基于多孔硅层的集成波导光学特性的影响

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-01 DOI: 10.1016/j.photonics.2024.101244

A. Jaafar, S. Meziani, A. Hammouti, P. Pirasteh, N. Lorrain, L. Bodiou, M. Guendouz, J. Charrier

{"title":"Oxidation effect on optical properties of integrated waveguides based on porous silicon layers at mid-infrared wavelength","authors":"A. Jaafar, S. Meziani, A. Hammouti, P. Pirasteh, N. Lorrain, L. Bodiou, M. Guendouz, J. Charrier","doi":"10.1016/j.photonics.2024.101244","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101244","url":null,"abstract":"<div><p>Integrated sensors based on guided optical devices can efficiently and selectively detect molecules in the mid-infrared (mid-IR) spectral range, exploiting the vibrational and rotational modes of these molecules at these wavelengths. In this work, a ridge waveguide based on porous silicon (PSi) layers was developed by electrochemical etching followed by a photolithographic process. The ridge waveguide is capable of propagating light in the mid-IR range (3.90–4.35 µm) with optical losses of approximately 10 dB/cm. An oxidation study was performed to stabilize the porous structure and identify the optimal oxidation degree, that allow mid-IR light to propagate in a ridge waveguide based on PSi material for sensing application. The results showed that the ridge waveguide remains capable of propagating light after undergoing partial oxidation at 300 °C and 600 °C (15% and 36% of the oxidation degree respectively) with optical losses of around 30 dB/cm and 60 dB/cm at the wavelength of 4.1 µm, respectively.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101244"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139942499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Reverse design of multifunctional demultiplexing devices 多功能解复用装置的逆向设计

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-01 DOI: 10.1016/j.photonics.2024.101246

Zhibin Wang, Zhengyang Li, Xuwei Hou, Jiutian Zhang

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Development of ZnO and Si semiconductor-based ultraviolet photodetectors enhanced by laser-ablated silver nanoparticles 通过激光喷射银纳米粒子增强氧化锌和硅半导体紫外线光电探测器的开发

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-01 DOI: 10.1016/j.photonics.2024.101228

Abdullah Marzouq Alharbi , Naser M. Ahmed , Azhar Abdul Rahman , Nurul Zahirah Noor Azman , Sameer Algburi , Ismael.A. Wadi , Ayed M. Binzowaimil , Osamah Aldaghri , Khalid Hassan Ibnaouf

{"title":"Development of ZnO and Si semiconductor-based ultraviolet photodetectors enhanced by laser-ablated silver nanoparticles","authors":"Abdullah Marzouq Alharbi , Naser M. Ahmed , Azhar Abdul Rahman , Nurul Zahirah Noor Azman , Sameer Algburi , Ismael.A. Wadi , Ayed M. Binzowaimil , Osamah Aldaghri , Khalid Hassan Ibnaouf","doi":"10.1016/j.photonics.2024.101228","DOIUrl":"10.1016/j.photonics.2024.101228","url":null,"abstract":"<div><p><span><span><span>The present study employs a cost-effective laser ablation technique in combination with the RF sputtering method to successfully synthesize silver </span>nanoparticles encapsulated by zinc oxide on a </span>silicon<span> (Si) substrate. This synthesis approach aims to enhance the efficiency of photodetector<span> devices while concurrently reducing material expenses, thereby promoting advancements in photodetector applications. The incorporation of various plasmonic nanoparticles (NPs) into the photodetector's architecture is demonstrated as a means to substantially improve the photoresponse of UV photodetectors. Three distinct samples, denoted as AgNPs/Si, AgNPs/ZnO/Si, and ZnO/AgNPs/Si, underwent comprehensive analysis and characterization of their morphological attributes, crystal structures, elemental composition, and optical properties. The UV photodetection efficacy of these samples was evaluated by subjecting them to 385 nm UV light at different bias voltages. The current-voltage (I-V) characteristics of the ZnO/AgNPs/Si photodetector revealed significantly enhanced conductivity in comparison to the AgNPs/Si and AgNPs/ZnO/Si counterparts. Remarkably, the ZnO/AgNPs/Si photodetector exhibited the highest responsivity value of 132 A/W, accompanied by quantum efficiency of 429.88, sensitivity of 31,400%, gain of 315, detectivity of 18 × 10</span></span></span><sup>10</sup> Jones, and a noise equivalent power (NEP) of 0.556 × 10<sup>–13</sup> W. These findings underscore the efficacy of our innovative broadband photodetector, highlighting its potential for practical implementation. This research offers valuable insights into the enhancement of photodetector performance and its applicability in real-world scenarios.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101228"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139510468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Ultra-wideband solar absorber based on double-polygonal metamaterial structures 基于双多边形超材料结构的超宽带太阳能吸收器

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-01 DOI: 10.1016/j.photonics.2024.101234

Pengfei Sun , Lijing Su , Sihan Nie , Xin Li , Yaxin Zhou , Yang Gao

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Mid-infrared assisted transport at the nano-junction between graphene and a doped-diamond scanning probe 石墨烯与掺杂金刚石扫描探针纳米接合处的中红外辅助传输

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-02-01 DOI: 10.1016/j.photonics.2024.101243

Tommaso Venanzi , Maria Eleonora Temperini , Leonetta Baldassarre , Michele Ortolani , Valeria Giliberti

引用次数: 0