Advanced Photonics Research最新文献

{"title":"Mitigating Losses in Hyperbolic Asymptotic Eigenmodes","authors":"Lu Song,&nbsp;Huaping Wang,&nbsp;Yingjie Wu,&nbsp;Tong Cai,&nbsp;Jiangang Liang,&nbsp;Lian Shen","doi":"10.1002/adpr.202400199","DOIUrl":"10.1002/adpr.202400199","url":null,"abstract":"<p>Materials exhibiting hyperbolic dispersion have attracted considerable interest within the optical and quantum communities due to their potential to confine electromagnetic waves at subwavelength scales, thereby surpassing the diffraction limit. This capability arises from the support of high-k (i.e., wavevector) eigenmodes in hyperbolic materials. However, a substantial trade-off exists between energy confinement and dissipation of these high-k eigenmodes under ambient conditions, with the fundamental limits of this trade-off remaining unexplored. Herein, the concept of hyperbolic asymptotic eigenmodes is studied, which are high-k eigenmodes that align with the asymptotic direction, as the name implies. Additionally, the challenge of mitigating the losses associated with these modes in hyperbolic metamaterials is addressed. This is achieved by carefully tuning the permittivity tensors of these metamaterials to satisfy loss compensation, where the ratio of the real to imaginary parts of the perpendicular and parallel components is equal. The findings demonstrate that hyperbolic asymptotic eigenmodes exhibit strong confinement and long-range propagation. Furthermore, proof-of-concept simulations for hyperbolic asymptotic eigenmodes in active hyperbolic metamaterials with gain molecules at visible frequencies are presented. The proposed loss compensation of hyperbolic asymptotic eigenmodes holds promise for advancing both conventional and quantum electromagnetic signal processing.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400199","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Nanoparticle Distribution on Photothermal Absorption in Binary Mixtures of Colloidal Supraballs","authors":"Hanieh Mohsenzadeh Hedeshi,&nbsp;Anvay Patil,&nbsp;Christian M. Heil,&nbsp;Nitant Gupta,&nbsp;Shahrzad Dehghani,&nbsp;Arthi Jayaraman,&nbsp;Ali Dhinojwala","doi":"10.1002/adpr.202500048","DOIUrl":"10.1002/adpr.202500048","url":null,"abstract":"<p>Melanin is ubiquitous in nature, and how the arrangement and concentration of melanin affect its optical and thermal properties aids in understanding the role of melanin in natural systems and technological applications. In this study, a model system consisting of silica and melanin particles with different compositions and degrees of mixing is designed to study the impact on light absorption. The structures are generated using coarse-grained molecular dynamics simulations, and their optical properties were calculated using finite-difference time-domain simulations. The results show that the supraballs with uneven distribution of melanin particles (strongly demixed) exhibit higher absorption (in the range of 360–1000 nm) at melanin concentrations of 40%–80%. Even for a simulation box with a thickness of 16 μm, the strongly demixed samples with melanin concentrations of 50%–100% absorb almost 80% of the total input light at 360–1000 nm. Since light absorption also correlates with thermal heat, thermal heat maps are presented for these systems as a function of melanin concentration and particle distribution. The fundamental knowledge of how melanin distribution alters power absorption will inform the development of photothermally responsive materials for medical applications (photothermal agents), sensors/communication devices, and coatings.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrabright Fiber-Coupled Polarization-Entangled Photon Source with Spectral Brightness Surpassing 2.0 MHz mW−1 nm−1","authors":"Kyungdeuk Park,&nbsp;Jungmo Lee,&nbsp;Dong-Gil Im,&nbsp;Dongkyu Kim,&nbsp;Yong Sup Ihn","doi":"10.1002/adpr.202500024","DOIUrl":"https://doi.org/10.1002/adpr.202500024","url":null,"abstract":"<p>This study presents an ultrabright polarization-entangled photon source that is optimally coupled into single-mode fibers (SMFs). This study theoretically and experimentally examines the characteristics of spontaneous parametric down-conversion (SPDC) photons, including their spectrum, bandwidth, emission angle, and intensity, as functions of crystal length, temperature and beam waist condition. Notably, this study measures the collinear spatial modes of photon-pairs and collection optics under various beam waist conditions and analyzes them using a collinear Gaussian approximation model. By employing a simple mode-matching optical setup, it optimizes the SMF coupling and heralding efficiencies of the photon-pairs. Consequently, it achieves a spectral brightness exceeding 2.0 MHz mW⁻¹ nm⁻¹ from a fiber-coupled entangled photon source, utilizing a 30 mm ppKTP crystal inside a polarization Sagnac interferometer. This represents the highest spectral brightness of SPDC photons generated using a continuous-wave (CW) laser pumped bulk crystal to date. Polarization entanglement is verified by a quantum state tomography and a polarization-correlation measurement. The fidelity of the entangled state is measured to be 97.8% and the Bell-Clauser-Horne-Shimony-Holt value <i>S</i> = 2.782 ± 0.04. The results obtained here provide practical insights for designing high-performance SPDC sources for satellite-based communication and long-distance optical links with extremely high-photon loss.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 10","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-Stimulated Luminescence from Mn2+-Activated Crystal-Free Germanate Glasses Charged by Sunlight","authors":"Jiangkun Cao,&nbsp;Meiyu Yang,&nbsp;Yicong Ding,&nbsp;Roman Sajzew,&nbsp;Zhiwen Pan,&nbsp;Christopher Ashling,&nbsp;Falko Langenhorst,&nbsp;Alexis Duval,&nbsp;Lothar Wondraczek","doi":"10.1002/adpr.202500070","DOIUrl":"10.1002/adpr.202500070","url":null,"abstract":"<p>Inorganic materials which emit light when excited by ultrasound have garnered growing attention. While the phenomenon holds considerable potential for advanced sensing, damage detection, and remote illumination, it has so far been known only for crystalline and often opaque materials. Herein, persistent and ultrasound-induced luminescence of a Mn²⁺-containing germanate glass free of crystals is demonstrated, as confirmed by combined X-ray diffraction and transmission electron microscopy. The light emission intensity scales with the extent of ultrasonic heating, which is in turn governed by input power and duty ratio, and can be charged by exposure to sunlight. Such all-inorganic materials offer the advantageous processability and preserved transparency of glasses over ceramic and organic materials, combined with highly tunable luminescence properties enabled by the exceptional compositional adaptability of glass formulations. With this set of properties, they present attractive opportunities for numerous applications, from smart lighting and display technologies to bioimaging.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Broadband Interferenceless Perfect Absorption in Hexagonal Boron Nitride and Lithium Fluoride Hyperbolic Metamaterial","authors":"Muhammad Imran,&nbsp;Xiangyu Kong,&nbsp;Muhammad Zeeshan Khan,&nbsp;Naeem Ullah,&nbsp;Aljawhara H. Almuqrin,&nbsp;Yibin Tian,&nbsp;Rujiang Li","doi":"10.1002/adpr.202400187","DOIUrl":"10.1002/adpr.202400187","url":null,"abstract":"<p>Interferenceless perfect absorption holds significant promise for applications in photodetection, photovoltaics, and medical diagnostics. In this study, an effective composite metamaterial with nanoscale thickness, composed of <i>hexagonal</i> Boron nitride (<i>h</i>BN) and lithium fluoride (LiF) layers is presented. Using effective medium approximation theory, the proposed design achieves broadband interferenceless perfect absorption, independent of polarization, either transverse magnetic or transverse electric. The structure employs a noninterferometric approach, enabling near-zero reflectance over a wide incident angle (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>θ</mi>\u0000 <mi>i</mi>\u0000 </msub>\u0000 <mo>=</mo>\u0000 <mn>0</mn>\u0000 <mo>°</mo>\u0000 <mo>–</mo>\u0000 <mn>80</mn>\u0000 <mo>°</mo>\u0000 </mrow>\u0000 <annotation>$left(thetaright)_{i}&amp;amp;amp;amp;amp;amp;amp;equals;0 circ - 80 circ$</annotation>\u0000 </semantics></math>). Notably, by adjusting the relative layer thicknesses, the <i>h</i>BN–LiF composite structure offers substantial control over its absorption characteristics. The absorption frequency can be blue-shifted by increasing the <i>h</i>BN thickness or red-shifted by increasing the LiF thickness. This flexible tunability makes the structure an ideal candidate for photodetection, infrared sensing, and other light-manipulation technologies.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400187","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Optical Properties of Single-Crystalline Phosphors Gd3In2Ga3O12:RE3+ (RE = Nd3+ and Ho3+) Grown via the Optical Float Zone Method","authors":"Hasan Yilmaz,&nbsp;Gülsüm Kinik,&nbsp;Masahiko Isobe,&nbsp;Pascal Puphal,&nbsp;Markus Suta,&nbsp;Oliver Clemens","doi":"10.1002/adpr.202500074","DOIUrl":"10.1002/adpr.202500074","url":null,"abstract":"<p>The continuous development of innovative optical materials with lanthanoid ions as activators has emerged as a modern sector of materials chemistry. The experience with the fabrication of single crystals with the optical float zone has motivated one to investigate the luminescence of Nd³⁺ and Ho³⁺ ions in the garnets (Gd_3−<i>x</i>RE_<i>x</i>)In₂Ga₃O₁₂ (RE = Nd and Ho, <i>x</i> = 0; 0.15–0.30). Upon usage of an Ar/O₂ (80:20 ratio) atmosphere and application of an auxiliary pressure (6 bar) to suppress In₂O₃ evaporation, single-crystalline domain sizes in the order of ≈6 × 6 × 1 mm³ are obtained. Structural analysis confirms the formation of a cubic garnet phase with space group <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>I</mi>\u0000 <mi>a</mi>\u0000 <mover>\u0000 <mn>3</mn>\u0000 <mo>¯</mo>\u0000 </mover>\u0000 <mi>d</mi>\u0000 </mrow>\u0000 <annotation>$I a bar{3} d$</annotation>\u0000 </semantics></math>, with the substituents incorporated in accordance with Vegard's law. Backscattered electron imaging and energy-dispersive X-ray spectroscopy are conducted, demonstrating a homogeneous elemental distribution within the crystals. Photoluminescence studies are carried out, revealing the characteristic narrow-line 4<i>f</i> ^<i>n</i> → 4<i>f</i> ^<i>n</i> transitions of Nd³⁺ and Ho³⁺, with decay times in the submillisecond range, suggesting non-negligible cross-relaxation effects are present. Despite this, the large nearest-neighbor Gd–Gd distance (3.88 Å) in Gd₃In₂Ga₃O₁₂ and the low phonon cutoff energy (≈700 cm⁻¹) are found to limit cross-relaxation pathways, preserving significant photoluminescence brightness. These results highlight the potential of Gd₃In₂Ga₃O₁₂:RE³⁺ single crystals as promising candidates for advanced optical applications.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144768060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited]","authors":"Yiqiao Zhang,&nbsp;Hua Lu,&nbsp;Zengji Yue,&nbsp;Mingwen Zhang,&nbsp;Xuetao Gan,&nbsp;Jianlin Zhao","doi":"10.1002/adpr.202400232","DOIUrl":"10.1002/adpr.202400232","url":null,"abstract":"<p>Topological insulators (TIs) have unique topologically protected conducting surface and insulating bulk states, which provide a novel platform for plasmonic excitation and related nanoscale functional devices. Exploring plasmon-enhanced interactions between light and atomic-layered semiconductors in TI nanostructures is particularly significant for optoelectronic applications of TIs. Herein, the Sb₂Te₃ TI nanotips are fabricated by using focused ion beam lithography technique and the plasmonic hot spot behaviors are investigated on the TI nanotips. The numerical simulation shows that there exists a distinct reinforcement of light field on the Sb₂Te₃ TI nanotips, which stems from the TI-based plasmonic hot spot effect. Moreover, the obvious enhancement of photoluminescence (PL) emission from a molybdenum disulfide (MoS₂) monolayer integrated onto the Sb₂Te₃ TI nanotips is experimentally observed. The PL intensity of MoS₂ layer on the Sb₂Te₃ nanotips can be effectively improved by about five-fold due to the plasmonic hot spot-induced field reinforcement when compared with that of MoS₂ without the Sb₂Te₃ nanotips. These results will open a new avenue for optoelectronic applications of TIs, especially in nanoscale enhanced PL emission.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400232","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144768059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing Single-Cell Measurement Using Dynamic Atomic Force Microscopy","authors":"Indrianita Lionadi,&nbsp;Gourav Bhattacharya,&nbsp;Liam McLarnon,&nbsp;George A. Burke,&nbsp;Amir Farokh Payam","doi":"10.1002/adpr.202400221","DOIUrl":"10.1002/adpr.202400221","url":null,"abstract":"<p>Advancements in atomic force microscopy (AFM) have established it as a versatile tool for imaging and characterizing biological samples, including living single cells in physiological conditions. Utilizing higher eigenmodes and harmonics of AFM microcantilevers offers enhanced sensitivity for measuring cells, tissues, and microorganisms. However, achieving accurate measurements in liquid environments poses challenges, particularly in detecting the cantilever's response. Optimizing the optical beam detection system is crucial to improving measurement sensitivity and image quality, especially when using higher-order vibration modes. This study addresses these challenges by optimizing the optical detection sensitivity of microcantilevers in dynamic and high-frequency AFM for single-cell measurements. This study investigates the effect of laser positioning on the cantilever's dynamic response in liquid environments and its impact on imaging resolution. Advanced image analysis techniques, such as natural image quality evaluator, cross-correlation, and sharpness, are employed to evaluate image quality. This approach provides insights and general guidelines for obtaining high-resolution images as well as image analysis approaches of biological materials in physiological conditions.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparing Magnon–Photon Pairs in a Cavity–Magnon–Qubit System","authors":"Yi Ren,&nbsp;Kai Wei Huang,&nbsp;Xin Wang,&nbsp;Hao Xiong","doi":"10.1002/adpr.202500029","DOIUrl":"10.1002/adpr.202500029","url":null,"abstract":"<p>Hybrid quantum states consisting of single photons and single magnons are valuable quantum resources for realizing multiple quantum information tasks. The blockade effects of magnons and photons in a cavity–magnon–qubit system are investigated, where an auxiliary microwave cavity is simultaneously coupled with an yttrium iron garnet sphere, a qubit, and another microwave cavity. The modes of the auxiliary cavity are adiabatically eliminated, and the virtual photons in the auxiliary cavity mediate the coupling between the magnon mode and photon mode. When the system parameters satisfy both conventional and unconventional blockade conditions, both the magnon/photon auto-correlation and magnon–photon cross-correlation are weak, indicating that magnons and photons tend to exist alone in the system. When the system parameters only satisfy unconventional blockade conditions, strong magnon–photon cross-correlation can be exhibited, indicating that magnons and photons tend to exist simultaneously in the system. The proposal presents a method for preparing magnon–photon pairs, which may have potential applications in quantum information sciences and technologies.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 8","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Two-Photon Excited Emission of Quantum Emitters by Colloidal Plasmonic Metasurfaces","authors":"Ylli Conti,&nbsp;Xing He,&nbsp;Yen-Chen Chen,&nbsp;Naihao Chiang,&nbsp;Leonardo Scarabelli","doi":"10.1002/adpr.202500075","DOIUrl":"10.1002/adpr.202500075","url":null,"abstract":"<p>Colloidal plasmonic metasurfaces are emerging as versatile platforms for advancing nanophotonic applications, whose rational design of increasing complexity allows for tailoring and integrating advanced plasmonic and photonic optical properties. Traditional lithographic techniques limit crystallographic and chemical adaptability, hindering the dynamic tuning of optical properties. In this work, a template-assisted self-assembly approach for achieving plasmonic metasurfaces using colloidal silver nanoparticle arrays and a thin film of core–shell CdSe/ZnS quantum dots are demonstrated. This system leverages plasmonic surface lattice resonances to create open nanophotonic cavities that enhance the two-photon excited emission process. The near-field interactions within these nanophotonic structures offer spectral tunability and efficient light–matter coupling. Moreover, using synthetic nanoparticles enables the integration of a rich library in nanoparticles’ size, shape, and composition, positioning them as promising candidates for compact and scalable photonic devices targeting nonlinear optical processes, advanced sensing, and dynamic light manipulation.</p>","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"6 7","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202500075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144573158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}