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Ultra-Broadband Optical Characterization of TiO2 Nanotube Arrays Revealing Annealing-Tunable THz Absorption 揭示退火可调谐太赫兹吸收的TiO2纳米管阵列的超宽带光学特性
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-29 DOI: 10.1002/nap2.70231
Anjali Chaudhary,Morteza Afshar,Emil J. Y. Magaway,Sunil Kumar,Ravendra Kumar Varshney,Jiří Čapek,Ivan Richter,Štěpán Kment,Miguel Navarro-Cía,Luca Mascaretti
{"title":"Ultra-Broadband Optical Characterization of TiO2 Nanotube Arrays Revealing Annealing-Tunable THz Absorption","authors":"Anjali Chaudhary,Morteza Afshar,Emil J. Y. Magaway,Sunil Kumar,Ravendra Kumar Varshney,Jiří Čapek,Ivan Richter,Štěpán Kment,Miguel Navarro-Cía,Luca Mascaretti","doi":"10.1002/nap2.70231","DOIUrl":"https://doi.org/10.1002/nap2.70231","url":null,"abstract":"Lithography-free spaced TiO2 NT arrays unlock tunable broadband absorption from THz to UV. By harnessing annealing-driven phase transitions, strong phonon–polariton resonances emerge in the 1.4–3.6 THz range, whereas high absorptance persists beyond 10 THz. This scalable oxide platform paves the way for compact, multifunctional devices in THz imaging, spectroscopy, and optoelectronic energy conversion.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"71 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148698783","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
Ultra Compact and Broadband Fiber Facet Graphene Oxide Microlens Array Fabricated on a Beam-Expanding Fiber Facet Using Femtosecond Laser Direct Writing Technique 利用飞秒激光直写技术在扩束光纤表面制备超紧凑宽带光纤面氧化石墨烯微透镜阵列
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-29 DOI: 10.1002/nap2.70217
Xiaoke Chen,Lin Ma,Linbin Bai,Tianqi Cheng,Zuyuan He
{"title":"Ultra Compact and Broadband Fiber Facet Graphene Oxide Microlens Array Fabricated on a Beam-Expanding Fiber Facet Using Femtosecond Laser Direct Writing Technique","authors":"Xiaoke Chen,Lin Ma,Linbin Bai,Tianqi Cheng,Zuyuan He","doi":"10.1002/nap2.70217","DOIUrl":"https://doi.org/10.1002/nap2.70217","url":null,"abstract":"A 400 nm graphene oxide film on a beam-expanding fiber facet is patterned by femtosecond laser direct writing into a 19-lens microlens array. The device simultaneously splits a single input beam into multiple 0.67–0.74 NA focus spots with a broadband response from 850 to 1550 nm. This single-step ultrathin platform offers a compact solution for multipoint sensing, fiber probe imaging, and integrated nanophotonics.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"41 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148698788","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
Robust Generation of Topological Biphoton Mode via Adiabatic Passage 绝热通道拓扑双光子模式的鲁棒生成
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-29 DOI: 10.1002/nap2.70223
Jaesung Lim,Jihwan Kim,Dong-Gil Im,Kyungdeuk Park,Dongkyu Kim,Yonggi Jo,Yong Sup Ihn
{"title":"Robust Generation of Topological Biphoton Mode via Adiabatic Passage","authors":"Jaesung Lim,Jihwan Kim,Dong-Gil Im,Kyungdeuk Park,Dongkyu Kim,Yonggi Jo,Yong Sup Ihn","doi":"10.1002/nap2.70223","DOIUrl":"https://doi.org/10.1002/nap2.70223","url":null,"abstract":"Topological waveguide arrays support robust mode propagation in the presence of fabrication imperfections, providing a significant advantage for on-chip quantum information processing. However, this robustness does not fully extend to nonlinear biphoton generation. Structural disorder can enhance the excitation of non-topological biphoton modes during nonlinear interactions, which degrades the quantum properties of the generated state. To overcome this limitation, we propose an adiabatic passage that connects an isolated site to a topological defect array. By initiating the nonlinear process in a strongly isolated regime, nonlinear coupling to unwanted modes is effectively suppressed, thereby preserving the Schmidt number of the generated state. The subsequent adiabatic connection facilitates the high fidelity transfer of the generated biphoton into the topological biphoton mode. Our numerical simulations demonstrate that, unlike conventional topological structures, the adiabatic scheme maintains both high biphoton fidelity and a unit Schmidt number in the presence of waveguide gap disorder. Furthermore, we show that this robustness extends to path entangled NOON states, achieving a near-unity quantum interference visibility. Our approach provides a practical design strategy for disorder-tolerant integrated quantum photonic devices.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"199 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148698784","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
Decoupling Backward Scattering Control and Forward Beamformed Communication in a Shared-Aperture Retro-Reflective/Transmissive Metasurface 共享孔径反反射/透射超表面的后向散射解耦控制与前向波束形成通信
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-28 DOI: 10.1002/nap2.70226
Shulei Zhang,Ruichao Zhu,Yuxiang Jia,Fan Wu,Xinqi Cai,Zhihui Zhang,Dan Liu,Yuxiao Guo,Jiafu Wang
{"title":"Decoupling Backward Scattering Control and Forward Beamformed Communication in a Shared-Aperture Retro-Reflective/Transmissive Metasurface","authors":"Shulei Zhang,Ruichao Zhu,Yuxiang Jia,Fan Wu,Xinqi Cai,Zhihui Zhang,Dan Liu,Yuxiao Guo,Jiafu Wang","doi":"10.1002/nap2.70226","DOIUrl":"https://doi.org/10.1002/nap2.70226","url":null,"abstract":"Conceptual illustration of the retro-reflective and transmissive metasurface (RRTM). The blue radar establishes communication with the UAV via the transmissive mode, whereas the purple surveillance radar acquires the status of friendly units through the retro-reflective mode and the two modes operate simultaneously within the same decoupled aperture.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"97 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148698774","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
Spectral Overlap Limits Optical Gain in Quantum Heterostructure Photonic Devices 光谱重叠限制了量子异质结构光子器件的光增益
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-28 DOI: 10.1002/nap2.70230
Nathalie Lander Gower,Muna Abedelrahman,Shiran Levy,Mohammed Salih,Maor Engel,Sumona Kumar,Sadhvikas J. Addamane,A. Giles Davies,Edmund H. Linfield,Asaf Albo
{"title":"Spectral Overlap Limits Optical Gain in Quantum Heterostructure Photonic Devices","authors":"Nathalie Lander Gower,Muna Abedelrahman,Shiran Levy,Mohammed Salih,Maor Engel,Sumona Kumar,Sadhvikas J. Addamane,A. Giles Davies,Edmund H. Linfield,Asaf Albo","doi":"10.1002/nap2.70230","DOIUrl":"https://doi.org/10.1002/nap2.70230","url":null,"abstract":"Increasing carrier density is commonly expected to enhance optical gain. Here, a universal crossover is identified in which interaction-induced spectral broadening competes with the intrinsic energy separation of optical states. When Γavg/Δ approaches unity, spectral overlap suppresses transition selectivity and limits gain, revealing a fundamental design constraint for quantum-confined photonic devices.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"8 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148698773","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
Breaking the Size-Tolerance Trade-off in Vertical Couplers via Adjoint-Based Inverse Design 基于伴随逆设计打破垂直耦合器尺寸公差权衡
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-28 DOI: 10.1002/nap2.70211
Ruiqi Liu,Suo Wang,Zeqiu Liu,Shiyu Mei,Jiahui Chi,Haiyang Yu,Yulian Cao,Jianguo Liu
{"title":"Breaking the Size-Tolerance Trade-off in Vertical Couplers via Adjoint-Based Inverse Design","authors":"Ruiqi Liu,Suo Wang,Zeqiu Liu,Shiyu Mei,Jiahui Chi,Haiyang Yu,Yulian Cao,Jianguo Liu","doi":"10.1002/nap2.70211","DOIUrl":"https://doi.org/10.1002/nap2.70211","url":null,"abstract":"A physics-guided inverse design framework combines physical insight with adjoint optimization by placing dense control points in the phase-near-matched region. This guided strategy yields a 20 μm III–V-on-silicon coupler with 98.11% efficiency, > 80% efficiency at  1.1 μm misalignment, and record high tolerance per unit length.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"7 11 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148698766","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
Enhanced Transport in Organic Semiconductors Mediated Through Interfacial Charge Transfer and Cooperative Strong Coupling 界面电荷转移和协同强耦合介导有机半导体中的增强输运
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-24 DOI: 10.1002/nap2.70197
Kuljeet Kaur,Nitin Yadav,Shashi Kumari,Jino George
{"title":"Enhanced Transport in Organic Semiconductors Mediated Through Interfacial Charge Transfer and Cooperative Strong Coupling","authors":"Kuljeet Kaur,Nitin Yadav,Shashi Kumari,Jino George","doi":"10.1002/nap2.70197","DOIUrl":"https://doi.org/10.1002/nap2.70197","url":null,"abstract":"Here, we experimentally demonstrate the effect of cooperative strong coupling to improve the electron mobility of an organic semiconductor. This is achieved by strong coupling between a highly absorbing organic dye and an organic semiconductor in a MOSFET cavity configuration. Our findings suggest the flexibility of applying cooperative strong coupling to improve material properties.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"17 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148564612","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
Third Harmonic Generation in Transparent Longitudinal Epsilon-Near-Zero Multilayers 透明纵向epsilon -近零多层中三次谐波的产生
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-22 DOI: 10.1002/nap2.70216
Wallace Jaffray,Sven Stengel,Domenico de Ceglia,Neset Akozbek,Filippo Capolino,Marcello Ferrera,Michael Scalora,Maria Antonietta Vincenti
{"title":"Third Harmonic Generation in Transparent Longitudinal Epsilon-Near-Zero Multilayers","authors":"Wallace Jaffray,Sven Stengel,Domenico de Ceglia,Neset Akozbek,Filippo Capolino,Marcello Ferrera,Michael Scalora,Maria Antonietta Vincenti","doi":"10.1002/nap2.70216","DOIUrl":"https://doi.org/10.1002/nap2.70216","url":null,"abstract":"Transparent longitudinal epsilon-near-zero stacks enable field-enhanced nonlinear light generation while preserving high near-infrared pump transmission. Broadband third-harmonic generation is experimentally observed demonstrating that TLENZ architectures can mitigate pump-loss limitations and offer a promising platform for transparent nonlinear nanophotonics.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"156 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148564717","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
Mapping the Strong-to-Weak Coupling Crossover in Polymer-Film Microcavity Lasers 聚合物膜微腔激光器强-弱耦合交叉映射
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-22 DOI: 10.1002/nap2.70214
Denis A. Sannikov,Nailya M. Urazova,Maksim D. Kolker,Grigorij D. Ivanov,Anton D. Putintsev,Aleksandr V. Averchenko,Daria Khmelevskaia,Liliya T. Sahharova,Nikita S. Shlapakov,Ioannis Paschos,Pavlos G. Savvidis,Valentine P. Ananikov,Pavlos G. Lagoudakis
{"title":"Mapping the Strong-to-Weak Coupling Crossover in Polymer-Film Microcavity Lasers","authors":"Denis A. Sannikov,Nailya M. Urazova,Maksim D. Kolker,Grigorij D. Ivanov,Anton D. Putintsev,Aleksandr V. Averchenko,Daria Khmelevskaia,Liliya T. Sahharova,Nikita S. Shlapakov,Ioannis Paschos,Pavlos G. Savvidis,Valentine P. Ananikov,Pavlos G. Lagoudakis","doi":"10.1002/nap2.70214","DOIUrl":"https://doi.org/10.1002/nap2.70214","url":null,"abstract":"The transition from polariton lasing to conventional photon lasing is mapped continuously within a single MeLPPP-filled open microcavity. The threshold rises approximately eighteen-fold across the crossover, whereas the saturation-driven V-shaped blueshift and dominance of vibron-mediated relaxation persist across both regimes, separating polariton-specific signatures from universal gain-driven behavior.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"5 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148564613","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
Robust Chiral High-Q Response Driven by Quasi-Bound Flatband in the Continuum 连续介质中准束缚平面带驱动的鲁棒手性高q响应
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2026-07-21 DOI: 10.1002/nap2.70218
Lei Huang,Weiqing Wang,Han Shen,Jing Chen,Shifeng Li,Biao Liu,Fuhuan Shen
{"title":"Robust Chiral High-Q Response Driven by Quasi-Bound Flatband in the Continuum","authors":"Lei Huang,Weiqing Wang,Han Shen,Jing Chen,Shifeng Li,Biao Liu,Fuhuan Shen","doi":"10.1002/nap2.70218","DOIUrl":"https://doi.org/10.1002/nap2.70218","url":null,"abstract":"This work theoretically proposes and numerically realizes chiral flatband quasi-BICs by engineering four counterpropagating folded guided modes. The chiroptical response arises from destructive interference of two antiphase intrinsic modes, and the flatband originates from the interactions among opposite curvature hybrid guided modes. These dispersionless BICs provide stronger field confinement than conventional BICs, enabling highly efficient third-harmonic generation, paving the way for miniaturized nonlinear chiral optical devices.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"13 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148564610","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
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