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Second harmonic generation of optical spin−orbit interactions in hybrid plasmonic nanocircuits
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-19 DOI: 10.1515/nanoph-2024-0725
Junjun Shi, Kangcheng Jing, Li Li, Wenjun Zhang, Tianzhu Zhang, Xiaobo He
{"title":"Second harmonic generation of optical spin−orbit interactions in hybrid plasmonic nanocircuits","authors":"Junjun Shi, Kangcheng Jing, Li Li, Wenjun Zhang, Tianzhu Zhang, Xiaobo He","doi":"10.1515/nanoph-2024-0725","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0725","url":null,"abstract":"The manipulation of nonlinear spin–orbit interaction at the nanoscale is crucial for advancing information processing in integrated nanophotonics. However, the weak spin–orbit interaction (SOI) in conventional waveguide materials significantly limits the efficiency of nonlinear optical processes. In this work, we design a hybrid plasmonic waveguide composed of a gold film and a Y-branch CdSe nanowire, which addresses the aforementioned limitations. The designed hybrid structure enables efficient directional emission of second-harmonic generation (SHG) via control of the polarization of the excitation light. The transversely emitted SHG can be visualized for directly imaging the SOI. Our work not only provides a way to enhances the efficiency of the nonlinear SOI but also a promising platform for further advances in integrated photonics and nonlinear optics.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"44 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661272","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
Enhancing radiative heat transfer with meta-atomic displacement
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-19 DOI: 10.1515/nanoph-2024-0729
Cheng-Long Zhou, Shuihua Yang, Yang Huang, Yong Zhang, Hong-Liang Yi, Mauro Antezza, Cheng-Wei Qiu
{"title":"Enhancing radiative heat transfer with meta-atomic displacement","authors":"Cheng-Long Zhou, Shuihua Yang, Yang Huang, Yong Zhang, Hong-Liang Yi, Mauro Antezza, Cheng-Wei Qiu","doi":"10.1515/nanoph-2024-0729","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0729","url":null,"abstract":"Controlling and manipulating radiative heat transfer remains a pivotal challenge in both scientific inquiry and technological advancement, traditionally tackled through the precise geometric design of metastructures. However, geometrical optimization cannot break the inherent shackles of local modes within individual meta-atoms, which hinders sustained progress in radiative heat transfer. Here, we propose a comprehensive strategy based on interatomic displacement to achieve superior heat transfer performance while obviating the need for increasingly complex structural designs. This meta-atomic displacement strategy enables a shift from quasi-isolated localized resonances to extended nonlocal resonant modes induced by strong interactions among neighboring meta-atoms, resulting in a radiative heat conductance that surpasses other previously reported geometrical structures. Furthermore, this meta-atomic displacement strategy can be seamlessly applied to various metastructures, offering significant implications for advancing thermal science and next-generation energy devices.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"92 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661267","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 array receiver with mode diversity and coherent combination
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-18 DOI: 10.1515/nanoph-2025-0038
Enge Zhang, Lei Zhang
{"title":"Optical phased array receiver with mode diversity and coherent combination","authors":"Enge Zhang, Lei Zhang","doi":"10.1515/nanoph-2025-0038","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0038","url":null,"abstract":"Optical phased arrays (OPAs) hold significant promise for low-cost, solid-state beam steering in LiDAR and free-space optical (FSO) communications. The field of view (FOV) is one of the key performance metrics in OPA for both optical beam transmitting (Tx) and receiving (Rx). Currently, people tend to use the same design for both the Tx and Rx parts under the hypothesis of reciprocity. In fact, Tx antennas typically generate well-controlled near-field profiles, whereas Rx apertures encounter randomly distributed incident waves due to uncontrolled reflection and propagation. This work demonstrates that leveraging mode diversity can effectively expand the FOV and enhance the receiving efficiency of Rx OPAs, irrespective of the antenna type. To efficiently utilize collected photons for coherent detection in LiDAR and FSO systems, we introduce an inversely designed mode splitter-converter and a coherent combination architecture. Unlike traditional methods, our approach effectively handles beams with varying amplitudes. As proof of concept, we designed and fabricated an 8-channel edge-emitting OPA receiver operating in TE<jats:sub>0</jats:sub> and TE<jats:sub>1</jats:sub> modes, employing a sparse array to suppress grating lobes within the ±90° range. Experimental results reveal an FOV of 133° for our multimode receiver, surpassing the 49° FOV of a single-mode counterpart with the same antenna array. Our approach, encompassing both mode diversity and coherent combination, introduces a new degree of freedom – higher-order spatial modes – with the potential to significantly advance OPA receiver design.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"4661 3 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653481","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
Localization of nanoscale objects with light singularities
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-18 DOI: 10.1515/nanoph-2024-0639
Thomas A. Grant, Anton N. Vetlugin, Eric Plum, Kevin F. MacDonald, Nikolay I. Zheludev
{"title":"Localization of nanoscale objects with light singularities","authors":"Thomas A. Grant, Anton N. Vetlugin, Eric Plum, Kevin F. MacDonald, Nikolay I. Zheludev","doi":"10.1515/nanoph-2024-0639","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0639","url":null,"abstract":"Unprecedented atomic-scale measurement resolution has recently been demonstrated in single-shot optical localization measurements based on deep-learning analyses of diffraction patterns of topologically structured light scattered from objects. Here, we show that variations in the diffraction patterns caused by positional changes of an object depend upon the spatial derivatives of the amplitude and phase of the incident field, most strongly around phase singularities. Despite lower intensity near the singularity, an orders-of-magnitude increase in Fisher information contained in the diffraction patterns can be achieved when a nano-object is illuminated by light containing phase singularities, rather than a plane wave. Our work provides a fundamental explanation and motivation for singularity-based metrology with deeply subwavelength precision.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"20 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653482","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
Dielectric metasurfaces based on a phase singularity in the region of high reflectance
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-18 DOI: 10.1515/nanoph-2024-0700
Jaewon Jang, Minsu Park, Hyeonjeong Kang, Gyu-Won Han, Hui Jae Cho, Yeonsang Park
{"title":"Dielectric metasurfaces based on a phase singularity in the region of high reflectance","authors":"Jaewon Jang, Minsu Park, Hyeonjeong Kang, Gyu-Won Han, Hui Jae Cho, Yeonsang Park","doi":"10.1515/nanoph-2024-0700","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0700","url":null,"abstract":"Metasurfaces, two-dimensional planar optical devices based on subwavelength-scale structures, have garnered significant attention for their potential to replace conventional optical components in various fields. These devices can manipulate the amplitude, phase, and polarization of light in versatile ways, offering complex functionalities within a single, space-efficient device. However, enhancing their functionality remains a challenge, requiring an expansion in the design flexibility of the structural elements, known as meta-atoms. In this study, we revealed that by varying the two independent lengths of the cross-shaped structure at a wavelength of 980 nm, a phase singularity exists in the region of high reflection. In addition, we found that the phase of transmitted light can be modulated from 0 to 2<jats:italic>π</jats:italic> by encircling this singularity. Based on the identified phase singularity, we designed and fabricated a polarization-independent metalens with varying numerical apertures to experimentally validate the feasibility of high-reflectivity transmissive wavefront engineering metasurfaces. The introduced meta-atoms based on a phase singularity are expected to open new avenues for applications, such as those requiring light attenuation and concentration simultaneously or the development of resonant cavity structures capable of beam modulation.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"61 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653479","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
Transverse orbital angular momentum of amplitude perturbed fields
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-18 DOI: 10.1515/nanoph-2024-0595
Scott W. Hancock, Nishchal Tripathi, Manh S. Le, Andrew Goffin, Howard M. Milchberg
{"title":"Transverse orbital angular momentum of amplitude perturbed fields","authors":"Scott W. Hancock, Nishchal Tripathi, Manh S. Le, Andrew Goffin, Howard M. Milchberg","doi":"10.1515/nanoph-2024-0595","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0595","url":null,"abstract":"We measure the change in transverse orbital angular momentum (tOAM) per photon, Δ⟨<jats:italic>L</jats:italic> <jats:sub> <jats:italic>y</jats:italic> </jats:sub>⟩, applied to an optical pulse by a pure amplitude perturbation. The results are in excellent agreement with calculations and simulations of the spatiotemporal torque based on our tOAM theory [Phys. Rev. Lett. 127, 193901 (2021)]. The crucial factor in determining Δ⟨<jats:italic>L</jats:italic> <jats:sub> <jats:italic>y</jats:italic> </jats:sub>⟩ is the spatiotemporal distribution of tOAM density in the pulse. We show that even Gaussian pulses with zero total tOAM can have net tOAM induced by an amplitude perturbation stationary in the lab frame. As a prelude to the paper, we review and clarify several recent theoretical approaches to tOAM and reemphasize several fundamental principles needed for the correct analysis of experiments and simulations.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"55 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653478","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
Stimulator-multiplexing framework of microwave-infrared compatible reconfigurable metasurface integrated with LED array
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-18 DOI: 10.1515/nanoph-2025-0013
Yuxi Li, Ruichao Zhu, Sai Sui, Yina Cui, Yuxiang Jia, Yajuan Han, Xinmin Fu, Cunqian Feng, Shaobo Qu, Jiafu Wang
{"title":"Stimulator-multiplexing framework of microwave-infrared compatible reconfigurable metasurface integrated with LED array","authors":"Yuxi Li, Ruichao Zhu, Sai Sui, Yina Cui, Yuxiang Jia, Yajuan Han, Xinmin Fu, Cunqian Feng, Shaobo Qu, Jiafu Wang","doi":"10.1515/nanoph-2025-0013","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0013","url":null,"abstract":"Metasurface can accurately control and manipulate electromagnetic (EM) waves with high degree of freedom, which is mainly due to their subwavelength structures and functional arrangements. However, most reconfigurable metasurfaces are currently limited to modulating EM waves in a single band. In order to further expand the application scenarios of metasurface, a stimulator-multiplexing framework of microwave-infrared compatible reconfigurable metasurface integrated with LED array is proposed. In this framework, a photoresistor is fully embedded into the meta-atom as an active device. Its resistance value can be adjusted through controlling the luminous intensity of the LED array. The LED array generates excitation light source, along with infrared characteristics. Therefore, it is not only the controller in the microwave band, but also the basic pixel in the infrared band. The framework adopts the way of stimulator-multiplexing, and the reconfigurable characteristics in the microwave and infrared bands can be realized through a single meta-atom structure. This work greatly enriches the metasurface design, which has a wide application prospect in many fields such as information transmission, and adaptive intelligent perception.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"20 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653480","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 transparent metamaterial emitter with multiband compatible camouflage based on femtosecond laser processing
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-17 DOI: 10.1515/nanoph-2024-0763
Shu-Wen Zheng, Xiu-Yu Chen, Jin-Long Huang, Kun Yu, Meng-Dan Qian, Yu-Fang Liu
{"title":"Optical transparent metamaterial emitter with multiband compatible camouflage based on femtosecond laser processing","authors":"Shu-Wen Zheng, Xiu-Yu Chen, Jin-Long Huang, Kun Yu, Meng-Dan Qian, Yu-Fang Liu","doi":"10.1515/nanoph-2024-0763","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0763","url":null,"abstract":"Infrared (IR) camouflage has garnered growing attention with progress in IR detection technology. The emergence of metamaterial with powerful electromagnetic field regulation ability provides an effective solution for thermal emission manipulation in IR camouflage. However, the intricated micro/nano machining technology of metamaterial greatly limits its moving toward practical application, and single-band IR camouflage makes it difficult to resist multiband cooperative detection systems. Here, a flexible, fine, and mask-free femtosecond laser direct writing (FsLDW) technology was introduced to pattern on ultra-thin metals. Based on this efficient technique, the optically transparent metamaterial emitter with multiband compatible camouflage is fabricated. The emitter is demonstrated to achieve high reflectance (<jats:italic>R</jats:italic> <jats:sub>3–5 µm</jats:sub> = 0.79 and <jats:italic>R</jats:italic> <jats:sub>8–14 µm</jats:sub> = 0.70) in the dual-band atmospheric window and low reflectance (<jats:italic>R</jats:italic> <jats:sub>1.06 µm</jats:sub> = 0.3, <jats:italic>R</jats:italic> <jats:sub>1.55 µm</jats:sub> = 0.1) for IR and laser stealth. In addition, the high emissivity (<jats:italic>ɛ</jats:italic> <jats:sub>5–8 µm</jats:sub> = 0.64) for the nonatmospheric window effectively dissipates the accumulated heat, showing promising prospects in radiative cooling by comparison with Ag at the same heating power. This work offers a clue for coordinated control of multiband electromagnetic waves and heat through simple structural design, which is expected to promote its camouflage applications and thermal management in the military.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"298 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640153","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
Stimulated Brillouin scattering in micro/nanophotonic waveguides and resonators
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-17 DOI: 10.1515/nanoph-2024-0732
Linhao Ren, Wenyu Wang, Kang Xu, Liying Zhu, Jun Wang, Lei Shi, Xinliang Zhang
{"title":"Stimulated Brillouin scattering in micro/nanophotonic waveguides and resonators","authors":"Linhao Ren, Wenyu Wang, Kang Xu, Liying Zhu, Jun Wang, Lei Shi, Xinliang Zhang","doi":"10.1515/nanoph-2024-0732","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0732","url":null,"abstract":"With the ongoing advancement of micro- and nanofabrication techniques, there has been a notable revival of interest in the field of stimulated Brillouin scattering within micro- and nanoscale waveguide structures in recent years. A variety of micro- and nanophotonic devices with different functions have been designed and fabricated, including lasers, amplifiers, isolators, sensors, filters, delay lines, and memory devices. Here, we provide a comprehensive review of stimulated Brillouin scattering in micro/nanophotonic waveguides and resonators on various promising material platforms, covering several key aspects such as the generation mechanisms of Brillouin nonlinear interactions in different waveguide structures and material platforms, methods for enhancing Brillouin gain, and a range of typical applications. Concluding our review, we offer insights into prospective future directions for this field.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"24 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143635697","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
Resonance modes in microstructured photonic waveguides: efficient and accurate computation based on AAA rational approximation
IF 7.5 2区 物理与天体物理
Nanophotonics Pub Date : 2025-03-17 DOI: 10.1515/nanoph-2024-0755
Felix Binkowski, Fridtjof Betz, Martin Hammerschmidt, Lin Zschiedrich, Sven Burger
{"title":"Resonance modes in microstructured photonic waveguides: efficient and accurate computation based on AAA rational approximation","authors":"Felix Binkowski, Fridtjof Betz, Martin Hammerschmidt, Lin Zschiedrich, Sven Burger","doi":"10.1515/nanoph-2024-0755","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0755","url":null,"abstract":"We present a framework for the efficient and accurate computation of resonance modes in photonic waveguides. The framework is based on AAA rational approximation with the application of special light sources. It allows one to calculate only relevant modes, such as the fundamental resonance modes localized in the central core of the waveguides. We demonstrate the framework using an example from the literature, a hollow-core photonic crystal fiber. This waveguide supports many other modes, such as cladding modes and higher-order modes. These nonrelevant modes are not calculated, so that challenging post-processing with mode filtering is not required.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"1 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640474","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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