ACS Photonics最新文献_第8页

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-18

Yipeng Lun, and , Huakang Yu*,

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IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-18

Mengdi Sun*, Ata Shakeri, Arvin Keshvari, Dimitrios Giannakopoulos, Qing Wang, Wei-Ting Chen, Steven G. Johnson and Zin Lin,

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IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-18

Varghese Alapatt, Francisco Marques-Moros, Carla Boix-Constant, Samuel Mañas-Valero, Kirill I. Bolotin, Josep Canet-Ferrer* and Eugenio Coronado*,

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IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-18

Sathwik Bharadwaj, and , Zubin Jacob*,

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IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-18

Siying Cheng, Xiang Li, Yaru Li, Yiran Feng, Wei Jin, Yu Zhang*, Zhihai Liu*, Yifan Qin, Xinghua Yang and Libo Yuan,

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Phase-Dependent Energy Dissipation for Dynamic Emissivity Modulation Using Quantum Dots Near Metallic Surfaces 金属表面附近量子点动态发射率调制的相位相关能量耗散

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-17 DOI: 10.1021/acsphotonics.5c00315

Haixiao Xu, Yichi Zhang, Yousheng Zou, Zhi Li, Yu Gu

{"title":"Phase-Dependent Energy Dissipation for Dynamic Emissivity Modulation Using Quantum Dots Near Metallic Surfaces","authors":"Haixiao Xu, Yichi Zhang, Yousheng Zou, Zhi Li, Yu Gu","doi":"10.1021/acsphotonics.5c00315","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00315","url":null,"abstract":"Recent advances in micro- and nanophotonic fabrication techniques have enabled precise control over thermal emissivity, unlocking a variety of intriguing applications. With self-adaptive features, dynamic tunability promises transformative potential but often depends on specialized materials with infrared optical properties responsive to external stimuli, limiting material choices and design flexibility. Herein, we introduce a new framework for dynamic emissivity modulation that exploits the phase-dependent energy dissipation, where the electromagnetic phase controls the amplitude of the total electric field and, consequently, the dissipation rate of the thermal emitter near metallic surfaces. Employing a bilayer system composed of Ag2Se quantum dots (QDs) and a LiF spacer layer on a metallic substrate, we experimentally demonstrate a tunable range of spectral emissivity (Δϵλ) of ∼0.7 and a tunable range of total integrated emissivity in the 8–13 μm waveband (Δϵ) of ∼0.5. The theoretical result also suggests that a dynamic range of the total emissivity as large as 0.6 is feasible by replacing the spacer layer with thermal-responsive polymers, electroelastic materials, magnetoelastic materials, or other phase modulating layers. This design provides a versatile platform for integrating various stimuli-responsive materials to enable dynamically tunable thermal emissivity, paving the way for advanced applications in self-adaptive thermal management and smart thermal systems.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"39 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144305160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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Femtosecond Laser-Induced Refractive Index Modulation of 2D Perovskites for Phase-Modulated Holographic Neural Networks 用于相位调制全息神经网络的二维钙钛矿飞秒激光诱导折射率调制

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-17 DOI: 10.1021/acsphotonics.5c00478

Ying Lv, Yi Wei, Shengting Zhu, Jinming Hu, Min Gu, Yinan Zhang

{"title":"Femtosecond Laser-Induced Refractive Index Modulation of 2D Perovskites for Phase-Modulated Holographic Neural Networks","authors":"Ying Lv, Yi Wei, Shengting Zhu, Jinming Hu, Min Gu, Yinan Zhang","doi":"10.1021/acsphotonics.5c00478","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00478","url":null,"abstract":"Laser direct writing functional optical materials enable high-resolution and optically thin computer-generated holograms with a wide range of applications. However, the traditional material system limits the development of holography technology due to the small refractive index modulation, high optical loss, and complicated preparation process. Perovskite has emerged as competitive candidates because of their superiority in high refractive index, flexible bandgap tunability, and low-cost preparation. Here, we report giant refractive index modulation of perovskites by femtosecond laser direct writing (FsLDW) for applications in holograms and holographic neural networks (HNNs). The interaction mechanism between the femtosecond laser and perovskites is also investigated. Under the precise control of FsLDW, the organic phenylethylamine (PEA) functional groups are reduced, leading to giant refractive index modulation from 0.15 to 1.05 at the broad wavelength range of 519–900 nm, along with geometric thickness reduction. Phase-modulated perovskite holograms and HNNs composed of cascaded holographic plates are demonstrated, greatly expanding the possibilities of perovskite applications in the field of all-optical information encoding.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"625 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144305158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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Ultracompact and Low Crosstalk Multicore Fiber Fan-in/out Device Fabricated via 3D Nanoprinting 采用纳米3D打印技术制造的超紧凑低串扰多芯光纤扇进/扇出器件

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-17 DOI: 10.1021/acsphotonics.5c00617

Jinpei Li, Shecheng Gao, Jiajing Tu, Zhaojian Chen, XiFa Liang, QiSui, Zhaohui Li

{"title":"Ultracompact and Low Crosstalk Multicore Fiber Fan-in/out Device Fabricated via 3D Nanoprinting","authors":"Jinpei Li, Shecheng Gao, Jiajing Tu, Zhaojian Chen, XiFa Liang, QiSui, Zhaohui Li","doi":"10.1021/acsphotonics.5c00617","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00617","url":null,"abstract":"As an optical transmission medium for high-density channels, a multicore fiber (MCF) is being increasingly utilized to enhance the communication capacity of modern systems. The MCF connecting module, also known as the fan-in/fan-out (FIFO) device, is a critical component in these applications. However, the current generation of FIFO devices, typically millimeter-sized, poses challenges for integrating multicore fiber systems seamlessly. In this work, we design and fabricate a 7-channel FIFO device using 3D nanoprinting, exhibiting an insertion loss of 1.72 dB and intercore crosstalk of less than −61.21 dB, with an average insertion loss of 2.23 dB in the C+L band. Remarkably, by utilizing the properties of a 3D printing photonic structure with a high refractive index contrast and the principle of total internal reflection, we achieve efficient and flexible control of the photon propagation direction, significantly reducing the overall size of the device. The total FIFO device has a compact length of just 140 μm. Additionally, the transmission of higher-order modes has also been successfully achieved based on the designed waveguide. The proposed compact FIFO device features low loss, low crosstalk, and broadband capabilities, offering a high-density integration solution for 3D optical interconnection schemes.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"37 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144311759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Single-Photon Source Monolithically Integrated on a 300 mm Silicon Wafer Using III–V Nano-ridge Engineering 利用III-V纳米脊技术在300 mm硅片上实现单光子源的单片集成

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-16 DOI: 10.1021/acsphotonics.5c00526

Davide Colucci, Ulrich Pfister, Reynald Alcotte, Peter Swekis, Michiel De Maeyer, Zhongtao Ouyang, Tom Vandekerckhove, Yves Mols, Robert Langer, Michael Jetter, Simone Luca Portalupi, Peter Michler, Geoffrey Pourtois, Dries Van Thourhout, Bernardette Kunert

{"title":"Single-Photon Source Monolithically Integrated on a 300 mm Silicon Wafer Using III–V Nano-ridge Engineering","authors":"Davide Colucci, Ulrich Pfister, Reynald Alcotte, Peter Swekis, Michiel De Maeyer, Zhongtao Ouyang, Tom Vandekerckhove, Yves Mols, Robert Langer, Michael Jetter, Simone Luca Portalupi, Peter Michler, Geoffrey Pourtois, Dries Van Thourhout, Bernardette Kunert","doi":"10.1021/acsphotonics.5c00526","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00526","url":null,"abstract":"Single-photon sources (SPSs) are essential for the development of practical quantum technologies, and their integration with silicon photonics is considered the preferred route for scalable implementations. To fully leverage the mature fabrication processes of CMOS foundries, we investigated the use of nano-ridge engineering (NRE) for the monolithic integration of InAs quantum dot (QD)-based SPSs on 300 mm Si wafers. These nano-ridges are made of high-crystal-quality GaAs selectively grown on a trench-patterned wafer, forming waveguides coplanar to the Si chip. The InAs QDs are embedded in these waveguides to form SPSs. In this work, a new device concept and integration approach is presented, showing that beta factors as high as 0.87 can be achieved owing to the high refractive index contrast between GaAs and SiO2. Then, a first proof of concept is demonstrated. Selective deposition of QDs on top of a diamond-shaped nano-ridge is used to center the dots within the final box-shaped nano-ridge, overgrown after the QD deposition, and to reduce the overall QD density per ridge. The grown QDs showed good spectral properties with line widths as low as 32.7 μeV at 955 nm. The autocorrelation measurements from a selected QD underlines the single-photon nature of the grown structure, with a g2(0) = 0.091 ± 0.005 under nonresonant pulsed excitation. These findings establish a solid foundation for future advancements, including implementing a PIN junction to enhance indistinguishability and extending the emission wavelength to the telecommunication O-band via the growth on InGaAs nano-ridges.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"34 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144305159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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Localized Surface Plasmon Resonances of Size-Selected Gold and Copper Nanoclusters Soft-Landed on a C60 Organic Substrate 尺寸选择金和铜纳米团簇在C60有机衬底上软着陆的局部表面等离子体共振

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-16 DOI: 10.1021/acsphotonics.5c00440

Miwa Tokita, Tomoya Inoue, Atsushi Nakajima

{"title":"Localized Surface Plasmon Resonances of Size-Selected Gold and Copper Nanoclusters Soft-Landed on a C60 Organic Substrate","authors":"Miwa Tokita, Tomoya Inoue, Atsushi Nakajima","doi":"10.1021/acsphotonics.5c00440","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00440","url":null,"abstract":"This study investigates the size-dependent localized surface plasmon resonance (LSPR) properties of gold (Au), copper (Cu), and palladium (Pd) nanoclusters (NCs) deposited on a C60 substrate by using two-photon photoemission spectroscopy (2PPE). The LSPR responses of these NCs are characterized by their photoemission enhancement under polarized light, focusing on the influence of cluster size and electronic structure. The results reveal that Aun NCs exhibit distinct LSPR responses to visible light when their size exceeds approximately 21 atoms (Au21), with significantly enhanced photoelectron intensities under p-polarized light. In contrast, Cun and Pdn NCs, even at sizes of around 70–90 atoms, show minimal or no LSPR responses. These results indicate that LSPR characteristics are strongly influenced by the electronic structure, particularly the arrangement of d-electrons near the Fermi level. For Aun NCs, relativistic effects of 5d-electrons facilitate LSPR in the visible spectrum, whereas narrow 3d-bands and the absence of free 5s electrons hinder plasmonic activity for Cun and Pdn NCs, respectively. This study highlights the critical role of d-electron configurations in determining the plasmonic properties of NCs, providing insights for designing advanced plasmonic nanomaterials with tailored electronic and structural characteristics.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144305156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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