Nanophotonics最新文献

Transmissive hybrid metal–dielectric metasurface bandpass filters for mid-infrared applications 用于中红外应用的透射混合金属-介电超表面带通滤波器

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-10-01 DOI: 10.1515/nanoph-2025-0122

Amr Soliman, Timothy D. Wilkinson

{"title":"Transmissive hybrid metal–dielectric metasurface bandpass filters for mid-infrared applications","authors":"Amr Soliman, Timothy D. Wilkinson","doi":"10.1515/nanoph-2025-0122","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0122","url":null,"abstract":"Mid-infrared (MIR) spectroscopy plays a pivotal role in molecular identification and biosensing due to its ability to probe characteristic vibrational fingerprints of biomolecules. Plasmonic nanostructures have been explored for MIR applications but suffer from low efficiencies and broad spectral responses caused by intrinsic ohmic losses. All-dielectric metasurfaces, with low optical losses, offer an attractive alternative; however, their functionality is often restricted to reflection-mode operation. This work introduces a hybrid metal–dielectric metasurface designed to operate in transmission mode, specifically tailored for molecular identification in MIR biosensing applications. The metasurface comprises germanium (Ge) on aluminum (Al) cylinders atop a calcium fluoride (CaF2) substrate, optimized to exhibits a high transmission efficiency of 80 % at a wavelength of λ = 4.2 µm, with a narrow full-width-half-maximum of 0.5 µm. By leveraging the hybridization of modes between the Ge and Al layers, the device enables precise spectral filtering. We demonstrate the potential of this metasurface for molecular identification and biosensing applications through numerical simulations and experimental validation. The straightforward fabrication process further highlights the practicality of this approach, paving the way for miniaturized MIR biosensing platforms.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"101 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Nonreciprocal transmission based on quasi-bound states in the continuum via scaled lattice constants 基于标度晶格常数的准束缚态的非互易传输

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-29 DOI: 10.1515/nanoph-2025-0320

Ran Li, Junqiang Sun

{"title":"Nonreciprocal transmission based on quasi-bound states in the continuum via scaled lattice constants","authors":"Ran Li, Junqiang Sun","doi":"10.1515/nanoph-2025-0320","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0320","url":null,"abstract":"Nonreciprocal devices are key technologies for modern photonic applications, and nonlinearly induced nonreciprocity based on metasurface platforms opens up the potential for compactness and miniaturization of such devices in free-space optical paths. In this work, a design of quasi-bound states in the continuum (QBICs) via scaled lattice constants is employed, featuring a plate-hole tetramer unit cell with single-step etching. Under normal incidence, QBICs exhibit polarization-insensitive excitation, with the scattering dominated by the combination term of magnetic dipoles, magnetic toroidal dipoles, electric quadrupoles as well as electric toroidal quadrupoles – rendering the vertical field distribution sensitive to parametric variations. Embedding Kerr nonlinearity yields nonreciprocal responses under upper and lower port excitation. The steep edges between peaks and valleys in the Fano-line-shaped transmission spectra facilitate balancing the nonreciprocal intensity range (NRIR) and isolation. The NRIR originates from electromagnetic asymmetry introduced by varying the substrate refractive index and can be flexibly tuned via structural parameters – validated by simulations of nonreciprocal responses with varying plate thickness alone. Additionally, Rabi splitting from varying hole depth induces abrupt electromagnetic asymmetry changes in the strong coupling region, offering a new NRIR tuning freedom. This design strategy provides fresh insights for nonreciprocal device research, with the structure holding promise for sensing and nonlinear applications.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"78 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

POST: photonic swin transformer for automated and efficient prediction of PCSEL POST：用于自动、高效预测PCSEL的光子旋流变压器

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-29 DOI: 10.1515/nanoph-2025-0317

Qi Xin, Hai Huang, Chenyu Li, Kewei Shi, Zhaoyu Zhang

{"title":"POST: photonic swin transformer for automated and efficient prediction of PCSEL","authors":"Qi Xin, Hai Huang, Chenyu Li, Kewei Shi, Zhaoyu Zhang","doi":"10.1515/nanoph-2025-0317","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0317","url":null,"abstract":"This work designs a model named POST based on the vision transformer (ViT) approach. Across single, double, and even triple lattices, as well as various non-circular complex hole structures, POST enables prediction of multiple optical properties of photonic crystal layers in photonic crystal surface emitting lasers (PCSELs) with high speed and accuracy, without requiring manual intervention, which serves as a comprehensive surrogate for the optical field simulation. In the predictions of quality factor (Q) and surface-emitting efficiency (SE) for PCSEL, the R-squared values reach 0.909 and 0.779, respectively. Additionally, it achieves nearly 5,000 predictions per second, significantly lowering simulation costs. The precision and speed of POST predictions lay a solid foundation for future ultra-complex model parameter tuning involving dozens of parameters. It can also swiftly meet designers’ ad-hoc requirements for evaluating photonic crystal properties. The database used for training the POST model is derived from predictions of different photonic crystal structures using the coupled-wave theory (CWT) model. This dataset will be made publicly available to foster interdisciplinary research advancements in materials science and computer science.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"105 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Gigahertz thermoelastic acousto-optic modulation in lithium niobate integrated photonic device 铌酸锂集成光子器件中的千兆赫热弹性声光调制

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-29 DOI: 10.1515/nanoph-2025-0252

Zheng Zheng, Hanke Feng, Ahmet Tarık Işık, Peter J.M. van der Slot, Cheng Wang, David Marpaung

引用次数: 0

Transparent metafilms for enhanced thermal regulation in energy-efficient windows 透明的元膜，用于增强节能窗户的热调节

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-27 DOI: 10.1515/nanoph-2025-0351

Biyuan Wu, Yue Ren, Xiqiao Huang, Meijie Chen, Yong Li, Jiangtao Li, Yang Kou, Xiaohu Wu

{"title":"Transparent metafilms for enhanced thermal regulation in energy-efficient windows","authors":"Biyuan Wu, Yue Ren, Xiqiao Huang, Meijie Chen, Yong Li, Jiangtao Li, Yang Kou, Xiaohu Wu","doi":"10.1515/nanoph-2025-0351","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0351","url":null,"abstract":"Transparent metafilms with spectrally selective properties have shown great potential in energy-efficient window systems. Most previous studies focused on optimizing materials and thicknesses to enhance visible transmittance and near-infrared (NIR) reflectance. However, few have considered how the position of the metafilms on the glass affects overall optical and thermal performance, especially in the mid-infrared (MIR) range critical for radiative cooling. In this work, we propose and analyze a five-layer TiO2/Ag/TiO2/Ag/TiO2 structure and systematically evaluate its performance under two typical installation scenarios. Numerical simulations based on the transfer matrix method show that both configurations maintain a high visible transmittance (∼0.88) and an effective NIR reflectance (∼0.98). Notably, a substantial difference is observed within the atmospheric transparency window 8–14 μm, where the interior-coated configuration possesses a high emissivity of 0.8. This value significantly exceeds the average emissivity of 0.01 found for the exterior-coated configuration, thereby resulting in superior passive radiative cooling capability. Moreover, we also compared the net radiative cooling power under the two configurations. These findings reveal that the position of the transparent metafilms critically influences MIR radiation. Coating placement on the interior surface not only maintains favorable solar modulation but also markedly enhances the thermal dissipation. This study offers theoretical guidance and practical insight into the design and implementation of metafilms in energy saving window systems aimed at reducing energy consumption, especially in regions with hot climates.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"15 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Azimuth-controlled multicolor shifting based on subwavelength sinusoidal grating 基于亚波长正弦光栅的方位控制多色偏移

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-24 DOI: 10.1515/nanoph-2025-0350

Tuo Yang, Yihang Zhou, Hongguang Li, Zefeng Rong, Yanyan Huang, Ping Xu, Haixuan Huang, Xia Yuan, Xulin Zhang, Lei Lei, Guijun Li, Yuanyang Wu, Yutong Di, Shuai Geng, Yunpeng Cui, Mengyu Wang, Yuchao Ma, Wenjie Kuang

{"title":"Azimuth-controlled multicolor shifting based on subwavelength sinusoidal grating","authors":"Tuo Yang, Yihang Zhou, Hongguang Li, Zefeng Rong, Yanyan Huang, Ping Xu, Haixuan Huang, Xia Yuan, Xulin Zhang, Lei Lei, Guijun Li, Yuanyang Wu, Yutong Di, Shuai Geng, Yunpeng Cui, Mengyu Wang, Yuchao Ma, Wenjie Kuang","doi":"10.1515/nanoph-2025-0350","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0350","url":null,"abstract":"Subwavelength grating-based color-shifting devices exhibit dynamically tunable spectral responses under specific resonant conditions, offering advanced applications in optical anticounterfeiting and surface decoration. However, conventional devices remain limited by structural complexity, narrow tuning ranges, low energy efficiency, and high manufacturing costs. Thereby, we propose a design methodology for multicolor shifting devices capable of dynamic color shifts through azimuthal angle rotation (i.e., in-plane rotation of the device). The proposed evaluation function can be adjusted to yield the desired spectral response, enabling diverse color shifts from a single template. Optimization of the geometric parameters and azimuth angles of rectangular gratings using rigorous coupled-wave analysis (RCWA) and an immune algorithm, followed by conversion into a sinusoidal structure to simplify large-area fabrication while maintaining performance. Using this approach, quad- and penta-color shifting devices based on subwavelength sinusoidal gratings were designed, achieving peak reflectance exceeding 45 % for all target colors, with maxima reaching 89 %. Additionally, the quad-color shifting device was fabricated using low-cost exposed holographic interferometry, validating the method. The results simplify the structure compared to conventional subwavelength grating filters, while enhancing optical performance and fabrication feasibility, offering a new approach for cost-effective, high-performance dynamic optical devices.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"40 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145133485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Optical phased arrays for wavefront shaping in forward scattering media 前向散射介质中用于波前整形的光学相控阵

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-22 DOI: 10.1515/nanoph-2025-0273

Filip Milojković, Niels Verellen, Roelof Jansen, Frédéric Peyskens, Xavier Rottenberg, Pol Van Dorpe

{"title":"Optical phased arrays for wavefront shaping in forward scattering media","authors":"Filip Milojković, Niels Verellen, Roelof Jansen, Frédéric Peyskens, Xavier Rottenberg, Pol Van Dorpe","doi":"10.1515/nanoph-2025-0273","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0273","url":null,"abstract":"High-resolution optical imaging in thick tissue samples remains elusive, mainly because of the scattering exhibited by the tissue. With increasing depth, the number of nonscattered photons exponentially decreases – limiting the use of conventional imaging techniques at depth. Wavefront shaping is a novel technique that aims to enable imaging at depth by refocusing the scattered light. However, significant wavefront-control hardware improvements are necessary to unlock the applications in in vivo microscopy. Optical phased arrays (OPAs), realized in integrated photonics, can provide improvements in the pixel pitch, operation speed, and system compactness compared to conventionally employed spatial light modulators. We compare different OPA designs for focusing in tissue-like forward-scattering samples. OPA design trade-offs, such as the array pitch, number of antennas, and antenna emission profile, are experimentally studied, and their influence on the device performance is highlighted. We do this for increasing thickness of the forward-scattering sample and observe two distinct regimes. The devices, operating at the wavelength of λ = 852 nm, were fabricated on a SiN photonics platform suitable for both near-infrared (NIR) and visible (VIS) light.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"86 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Strong broadband intensity noise squeezing from infrared to terahertz frequencies in lasers with nonlinear dissipation 非线性耗散激光器中从红外到太赫兹频率的强宽带强噪声压缩

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-19 DOI: 10.1515/nanoph-2025-0259

Sahil Pontula, Jamison Sloan, Nicholas Rivera, Marin Soljačić

{"title":"Strong broadband intensity noise squeezing from infrared to terahertz frequencies in lasers with nonlinear dissipation","authors":"Sahil Pontula, Jamison Sloan, Nicholas Rivera, Marin Soljačić","doi":"10.1515/nanoph-2025-0259","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0259","url":null,"abstract":"The generation and application of squeezed light have long been central goals of quantum optics. Intensity noise squeezing of bright (coherent) states (“bright squeezing”), in contrast to squeezed vacuum, is relatively underdeveloped. The current state of the art has generally been restricted to narrow operating wavelength ranges and does not natively support strong intracavity and broadband output squeezing. Here, we show how lasers with sharp intensity-dependent dissipation can support strong intensity noise squeezing from infrared (IR) to terahertz (THz) wavelengths, the latter of which has eluded quantum light generation. Our protocol realizes strongly ( <m:math xmlns:m=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\"> <m:mo>></m:mo> <m:mn>10</m:mn> </m:math> ${ >} 10$ dB) intensity noise-squeezed intracavity quantum states as well as output squeezing surpassing gigahertz bandwidths. Furthermore, we show how the same systems also support self-pulsing and bistability, enabling control of light in both the mean field and noise domains. Our protocol could enable advances in low-noise communication, cavity QED, and quantum sensing across the electromagnetic spectrum.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"38 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A nonlocal metasurface for optical edge detection in the far-field 一种用于远场光学边缘检测的非局部超表面

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-19 DOI: 10.1515/nanoph-2025-0373

Doyoon Lee, Huu Lam Phan, Minkyung Kim

{"title":"A nonlocal metasurface for optical edge detection in the far-field","authors":"Doyoon Lee, Huu Lam Phan, Minkyung Kim","doi":"10.1515/nanoph-2025-0373","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0373","url":null,"abstract":"Recent studies on nonlocal metasurfaces have shown possibilities of optical image processing, such as edge detection, without the need for Fourier optics and have significantly reduced the form factor. However, the analog edge detection using nonlocal metasurfaces still requires the use of multiple lenses to image the edge-enhanced results, and the edge-detected image generally suffers from image distortion originating from the free space propagation before reaching the detector otherwise. In this work, we propose a nonlocal metasurface that not only enhances the edge features but also delivers them to the far-field with considerably less distortion by combining the conventional edge detection metasurface with a uniaxial slab that has a transfer function of the free space with a negative propagation length. This space expander cancels out the diffraction of the edge-enhanced image that occurs during the free space propagation, the thickness of which reaches several orders of magnitude larger than the slab thickness. This nonlocal metasurface for the far-field edge detection will open a path towards compact optical systems for high-quality analog image processing.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"80 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Arbitrary polarization and rotation multiplexed metasurface hologram 任意偏振和旋转多路超表面全息图

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-09-18 DOI: 10.1515/nanoph-2025-0313

Zonge Che, Yisheng Dong, Tiaoming Niu, Jining Li, Guanmao Zhang, Ziyin Ma, Shujie Liu, Jingwei Zhang, Zhonglei Mei

{"title":"Arbitrary polarization and rotation multiplexed metasurface hologram","authors":"Zonge Che, Yisheng Dong, Tiaoming Niu, Jining Li, Guanmao Zhang, Ziyin Ma, Shujie Liu, Jingwei Zhang, Zhonglei Mei","doi":"10.1515/nanoph-2025-0313","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0313","url":null,"abstract":"Metasurface holograms, characterized by their ultra-small thickness, high efficiency, and low loss, hold significant potential for applications in optical information storage, optical field manipulation, and security encryption. This paper proposed a polarization switchable and rotation multiplexing metasurface based on simultaneous amplitude and phase modulation. By precisely designing meta-atoms, the geometric parameters and orientation angle are engineered to independently control the phase and amplitude distributions of the metasurface. Utilizing a polarization switching strategy, incident light with different polarization angles generates distinct holograms. Additionally, the rotation-multiplexing mechanism further enhances information storage capacity by rotating the metasurface disk, thereby increasing the diversity and degrees of freedom in hologram. The results demonstrate that this approach enables precise optical field manipulation across multiple degrees of freedom, facilitating the reconstruction of multichannel holograms. This method provides a novel technological pathway for high-density optical storage, information encryption, and dynamic optical display.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"6 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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