Nanophotonics最新文献

Advancements in surface-enhanced femtosecond stimulated Raman spectroscopy: exploring factors influencing detectability and shapes of spectra

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-12-05 DOI: 10.1515/nanoph-2024-0272

Patryk Pyrcz, Sylwester Gawinkowski

{"title":"Advancements in surface-enhanced femtosecond stimulated Raman spectroscopy: exploring factors influencing detectability and shapes of spectra","authors":"Patryk Pyrcz, Sylwester Gawinkowski","doi":"10.1515/nanoph-2024-0272","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0272","url":null,"abstract":"A combination of femtosecond stimulated Raman scattering and surface-enhanced Raman scattering, termed surface-enhanced stimulated Raman scattering (SE-FSRS), was proposed to leverage both temporal precision and sensitivity for advanced molecular dynamics analysis. During the initial successful implementations of this approach, unexpected spectral distortions were observed, and several potential explanations were proposed. Further progress in this novel technique and its broader implementation requires a profound understanding of the factors influencing the shape of the registered spectra and the underlying mechanisms. Here we present findings on how pulse energy and excitation wavelengths affect SE-FSRS spectra, emphasizing the influence of a strong broadband background on spectral dispersion. These insights contribute to understanding the complex mechanisms underlying SE-FSRS and suggest methods to improve the control and application of this spectroscopic technique, highlighting its potential to provide deeper insights into molecular dynamics. This work represents a significant step toward exploiting SE-FSRS for advanced analytical applications.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"27 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782466","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

Modulation of surface phonon polaritons in MoO3 via dynamic doping of SiC substrate

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-12-05 DOI: 10.1515/nanoph-2024-0386

Juan Luis Garcia-Pomar, Rajveer Fandan, Fernando Calle, Jorge Pedrós

{"title":"Modulation of surface phonon polaritons in MoO3 via dynamic doping of SiC substrate","authors":"Juan Luis Garcia-Pomar, Rajveer Fandan, Fernando Calle, Jorge Pedrós","doi":"10.1515/nanoph-2024-0386","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0386","url":null,"abstract":"Polar biaxial crystals with extreme anisotropy hold promise for the spatial control and the manipulation of polaritons, as they can undergo topological transitions. However, taking advantage of these unique properties for nanophotonic devices requires to find mechanisms to modulate dynamically the material response. Here, we present a study on the propagation of surface phonon polaritons (SPhPs) in a photonic architecture based on a thin layer of α-MoO3 deposited on a semiconducting 4H-SiC substrate, whose carrier density can be tuned through photoinduction. By employing this system, we establish a comprehensive polaritonic platform where the propagation of the hybridized SPhPs can be manipulated dynamically due to their coupling with the electron plasma. Specifically, we demonstrate that increasing the doping of the 4H-SiC substrate allows for modulating the on/off switch behavior of SPhP propagation or its controlled canalization. Furthermore, this modulation leads to a notable increase in the Purcell factor, primarily attributed to the doping-induced flat dispersion curve creating ultra-slow light. These findings have significant implications for the development of nanophotonic and quantum technologies, as they enable the utilization of polaritonic materials exclusively.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"82 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782467","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

Measuring high-efficiency perfect composite vortex beams with reflective metasurfaces in microwave band

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-12-02 DOI: 10.1515/nanoph-2024-0294

Jing Hong, Mengyi Ni, Zhengping Zhang, Zheng-Da Hu, Jicheng Wang, Xiaopeng Shen, Xiong Wang, Mengmeng Li, Sergei Khakhomov

{"title":"Measuring high-efficiency perfect composite vortex beams with reflective metasurfaces in microwave band","authors":"Jing Hong, Mengyi Ni, Zhengping Zhang, Zheng-Da Hu, Jicheng Wang, Xiaopeng Shen, Xiong Wang, Mengmeng Li, Sergei Khakhomov","doi":"10.1515/nanoph-2024-0294","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0294","url":null,"abstract":"Optical vortex beams carrying orbit angular momentum have attracted significant attention recently. Perfect vortex beams, characterized by their topological charge-independent intensity profile, have important applications in enhancing communication capacity and optimizing particle manipulation. In this paper, metal-insulator-metal copper-coin type reflective metasurfaces are proposed to generate perfect composite vortex beams in X-band. We introduce the qualified equivalent circuit model based on the theory of transmission line to design the meta-atom of the structure. The experiments are performed to measure the far-field and near-field perfect composite vortex beams and evaluate their orbital angular momentum purity at different frequencies. The experimental results agree well with the theoretical predictions. This work provides new ideas and methods for generating high-quality metasurface-based perfect composite vortex beams in the microwave region, paving an ideal path for microwave communication systems, optical manipulation and radar detection.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"45 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142758525","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

Nanometric probing with a femtosecond, intra-cavity standing wave

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-11-28 DOI: 10.1515/nanoph-2024-0332

Tobias Heldt, Jan-Hendrik Oelmann, Lennart Guth, Nick Lackmann, Lukas Matt, Thomas Pfeifer, José R. Crespo López-Urrutia

{"title":"Nanometric probing with a femtosecond, intra-cavity standing wave","authors":"Tobias Heldt, Jan-Hendrik Oelmann, Lennart Guth, Nick Lackmann, Lukas Matt, Thomas Pfeifer, José R. Crespo López-Urrutia","doi":"10.1515/nanoph-2024-0332","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0332","url":null,"abstract":"Optical standing waves are intrinsically nanometric, spatially fixed interference-field patterns. At a commensurate scale, metallic nanotips serve as coherent, atomic-sized electron sources. Here, we explore the localized photofield emission from a tungsten nanotip with a transient standing wave. It is generated within an optical cavity with counter-propagating femtosecond pulses from a near-infrared, 100-MHz frequency comb. Shifting the phase of the standing wave at the tip reveals its nodes and anti-nodes through a strong periodic modulation of the emission current. We find the emission angles to be distinct from those of a traveling wave, and attribute this to the ensuing localization of emission from different crystallographic planes. Supported by a simulation, we find that the angle of maximum field enhancement is controlled by the phase of the standing wave. Intra-cavity nanotip interaction not only provides higher intensities than in free-space propagation, but also allows for structuring the light field even in the transverse direction by selection of high-order cavity modes.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"54 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756086","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

Considerations for electromagnetic simulations for a quantitative correlation of optical spectroscopy and electron tomography of plasmonic nanoparticles

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-11-28 DOI: 10.1515/nanoph-2024-0238

Mees Dieperink, Alexander Skorikov, Nathalie Claes, Sara Bals, Wiebke Albrecht

{"title":"Considerations for electromagnetic simulations for a quantitative correlation of optical spectroscopy and electron tomography of plasmonic nanoparticles","authors":"Mees Dieperink, Alexander Skorikov, Nathalie Claes, Sara Bals, Wiebke Albrecht","doi":"10.1515/nanoph-2024-0238","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0238","url":null,"abstract":"The optical cross sections of plasmonic nanoparticles are intricately linked to their morphologies. Accurately capturing this link could allow determination of particles’ shapes from their optical cross sections alone. Electromagnetic simulations bridge morphology and optical properties, provided they are sufficiently accurate. This study examines key factors affecting simulation precision, comparing common methods and detailing the impacts of meshing accuracy, dielectric function selection, and substrate inclusion within the boundary element method. To support the method’s complex parameterization, we develop a workflow incorporating reconstruction, meshing, and mesh simplification, to enable the use of electron tomography data. We analyze how choices of reconstruction algorithm and image segmentation affect simulated optical cross sections, relating these to shape errors minimized during data processing. Optimal results are obtained using the total variation minimization (TVM) reconstruction method with Otsu thresholding and light smoothing, ensuring reliable, watertight surface meshes through the marching cubes algorithm, even for complex shapes.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"11 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756157","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

Degeneracy mediated thermal emission from nanoscale optical resonators with high-order symmetry

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-11-27 DOI: 10.1515/nanoph-2024-0534

Zexiao Wang, Jiayu Li, Zhuo Li, Xiu Liu, Yibai Zhong, Tianyi Huang, Sheng Shen

{"title":"Degeneracy mediated thermal emission from nanoscale optical resonators with high-order symmetry","authors":"Zexiao Wang, Jiayu Li, Zhuo Li, Xiu Liu, Yibai Zhong, Tianyi Huang, Sheng Shen","doi":"10.1515/nanoph-2024-0534","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0534","url":null,"abstract":"Conventional thermal emitters, such as a blackbody or the incandescent filament of a light bulb, lack the directionality or narrow linewidth required in many applications such as thermophotovoltaics and infrared sensing. Although thermal emission from bulk materials is well understood based on phenomenological heat transfer concepts like emissivity and the framework of classical electrodynamics, there still remains a significant gap in our understanding of thermal emission at the nanoscale. In this work, by leveraging the quasi-normal mode theory, we derive a general and self-consistent formalism to describe the thermal radiation from nanoscale resonant thermal emitters with high-order symmetric geometries, which are the basic building blocks of metasurfaces and metamaterials. The complex symmetrical geometries of the emitters yield degeneracy of quasi-normal modes. The introduction of the degeneracy can strongly mediate far-field thermal emission from nanoscale resonators, which is closely correlated to the number of degenerate modes and the coupling among the degenerate modes. Our formalism from the quasi-normal mode theory serves as a general guideline to design the complex metastructures with high-ordered degeneracy to achieve optimized absorption or emission capabilities.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"17 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756158","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

Design and fabrication of robust hybrid photonic crystal cavities 设计和制造坚固耐用的混合光子晶体腔体

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-11-25 DOI: 10.1515/nanoph-2024-0500

Alex Abulnaga, Sean Karg, Sounak Mukherjee, Adbhut Gupta, Kirk W. Baldwin, Loren N. Pfeiffer, Nathalie P. de Leon

引用次数: 0

Emission dynamics and spectrum of a nanoshell-based plasmonic nanolaser spaser 基于纳米壳的等离子纳米激光器的发射动力学和光谱

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-11-25 DOI: 10.1515/nanoph-2024-0491

Ashod Aradian, Karen Caicedo, Andres Cathey, Milena Mora, Nicole Recalde, Melissa Infusino, Alessandro Veltri

引用次数: 0

Twist-tunable in-plane anisotropic polaritonic crystals 扭曲可调的面内各向异性极性晶体

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-11-25 DOI: 10.1515/nanoph-2024-0462

Nathaniel Capote-Robayna, Ana I. F. Tresguerres-Mata, Aitana Tarazaga Martín-Luengo, Enrique Terán-García, Luis Martin-Moreno, Pablo Alonso-González, Alexey Y. Nikitin

{"title":"Twist-tunable in-plane anisotropic polaritonic crystals","authors":"Nathaniel Capote-Robayna, Ana I. F. Tresguerres-Mata, Aitana Tarazaga Martín-Luengo, Enrique Terán-García, Luis Martin-Moreno, Pablo Alonso-González, Alexey Y. Nikitin","doi":"10.1515/nanoph-2024-0462","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0462","url":null,"abstract":"van der Waals (vdW) materials supporting phonon polaritons (PhPs) – light coupled to lattice vibrations – have gathered significant interest because of their intrinsic anisotropy and low losses. In particular, α-MoO3 supports PhPs with in-plane anisotropic propagation, which has been exploited to tune the optical response of twisted bilayers and trilayers. Additionally, various studies have explored the realization of polaritonic crystals (PCs) – lattices with periods comparable to the polariton wavelength. PCs consisting of hole arrays etched in α-MoO3 slabs exhibit Bragg resonances dependent on the angle between the crystallographic axes and the lattice vectors. However, such PC concept, with a fixed orientation and size of its geometrical parameters, constrains practical applications and introduces additional scattering losses due to invasive fabrication processes. Here, we demonstrate a novel PC concept that overcomes these limitations, enabling low-loss optical tuning. It comprises a rotatable pristine α-MoO3 layer located on a periodic hole array fabricated in a metallic layer. Our design prevents degradation of the α-MoO3 optical properties caused by fabrication, preserving its intrinsic low-loss and in-plane anisotropic propagation of PhPs. The resulting PC exhibits rotation of the Bloch modes, which is experimentally visualized by scanning near-field microscopy. In addition, we experimentally determine the polaritons momentum and reconstruct their band structure. These results pave the way for mechanically tunable nano-optical components based on polaritons for potential lasing, sensing, or energy harvesting applications.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"13 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142712742","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

Constant-force photonic projectile for long-distance targeting delivery 用于远距离目标投放的恒力光子弹丸

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2024-11-22 DOI: 10.1515/nanoph-2024-0484

Chun Meng, Yu-Xuan Ren, Fengya Lu, Panpan Yu, Jinhua Zhou, Min-Cheng Zhong

{"title":"Constant-force photonic projectile for long-distance targeting delivery","authors":"Chun Meng, Yu-Xuan Ren, Fengya Lu, Panpan Yu, Jinhua Zhou, Min-Cheng Zhong","doi":"10.1515/nanoph-2024-0484","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0484","url":null,"abstract":"Optically controllable delivery of microparticles excites interesting research and applications in various fields because of the noninvasive and noncontact features. However, long-distance delivery with a static low-power light source remains challenging. Here, the constant-force photonic projectile (CFPP) is employed to achieve long-distance delivery of microparticles with a low-power laser beam. The CFPP takes advantage of photon absorption to create a constant optical force within a large range, surpassing traditional tweezers. The concept of CFPP has been experimentally corroborated by remote control over micrometer-sized absorptive particles (APs) using a simple tilted focused beam. At the laser focus, strong photon absorption results in a large constant optical force that ejects the APs along the optical axis. Furthermore, the additional thermal convection field, which attracts particles from a distance into the working range of the CFPP, is utilized to collect the unbound APs for reuse. Finally, we demonstrate the concept of drug delivery by transporting a small microparticle onto a host particle at a remote location. The proposed CFPP provides a new perspective for drug delivery and heat-enhanced photodynamic therapy.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"15 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142690543","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