Light, science & applications最新文献

Integrated electronic controller for dynamic self-configuration of photonic circuits. 用于光子电路动态自配置的集成电子控制器。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-30 DOI: 10.1038/s41377-025-01977-w

Emanuele Sacchi, Francesco Zanetto, Andres Ivan Martinez, SeyedMohammad SeyedinNavadeh, Francesco Morichetti, Andrea Melloni, Marco Sampietro, Giorgio Ferrari

{"title":"Integrated electronic controller for dynamic self-configuration of photonic circuits.","authors":"Emanuele Sacchi, Francesco Zanetto, Andres Ivan Martinez, SeyedMohammad SeyedinNavadeh, Francesco Morichetti, Andrea Melloni, Marco Sampietro, Giorgio Ferrari","doi":"10.1038/s41377-025-01977-w","DOIUrl":"10.1038/s41377-025-01977-w","url":null,"abstract":"Reconfigurable photonic integrated circuits (PICs) can implement arbitrary operations and signal processing functionalities directly in the optical domain. Run-time configuration of these circuits requires an electronic control layer to adjust the working point of their building elements and compensate for thermal drifts or degradations of the input signal. As the advancement of photonic foundries enables the fabrication of chips of increasing complexity, developing scalable electronic controllers becomes crucial for the operation of complex PICs. In this paper, we present an electronic application-specific integrated circuit (ASIC) designed for reconfiguration of PICs featuring numerous tunable elements. Each channel of the ASIC controller independently addresses one optical component of the PIC, and multiple parallel local feedback loops are operated to achieve full control. The proposed design is validated through real-time reconfiguration of a 16-channel silicon photonics adaptive universal beam coupler. Results demonstrate automatic coupling of an arbitrary input beam to a single-mode waveguide, dynamic compensation of beam wavefront distortions and successful transmission of a 50 Gbit/s signal through an optical free-space link. The low power consumption and compactness of the electronic chip provide a scalable paradigm that can be seamlessly extended to larger photonic architectures.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"14 1","pages":"348"},"PeriodicalIF":23.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12480261/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145191894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interface second harmonic generation enhancement in bulk WS₂/MoS₂ hetero-bilayer van der Waals nanoantennas. 本体WS2/MoS2异质双层范德华纳米天线中界面二次谐波的增强。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-29 DOI: 10.1038/s41377-025-01983-y

Andrea Tognazzi, Paolo Franceschini, Jonas Biechteler, Enrico Baù, Alfonso Carmelo Cino, Andreas Tittl, Costantino De Angelis, Luca Sortino

{"title":"Interface second harmonic generation enhancement in bulk WS2/MoS2 hetero-bilayer van der Waals nanoantennas.","authors":"Andrea Tognazzi, Paolo Franceschini, Jonas Biechteler, Enrico Baù, Alfonso Carmelo Cino, Andreas Tittl, Costantino De Angelis, Luca Sortino","doi":"10.1038/s41377-025-01983-y","DOIUrl":"10.1038/s41377-025-01983-y","url":null,"abstract":"Layered van der Waals (vdW) materials have emerged as a promising platform for nanophotonics due to large refractive indexes and giant optical anisotropy. Unlike conventional dielectrics and semiconductors, the absence of covalent bonds between layers allows for novel degrees of freedom in designing optically resonant nanophotonic structures down to the atomic scale: from the precise stacking of vertical heterostructures to controlling the twist angle between crystallographic axes. Specifically, although monolayers of transition metal dichalcogenides exhibit giant second-order nonlinear responses, their bulk counterparts with 2H stacking possess zero second-order nonlinearity. In this work, we investigate second harmonic generation (SHG) arising from the interface of WS2/MoS2 hetero-bilayer thin films with an additional SHG enhancement in nanostructured optical antennas, mediated by both the excitonic resonances and the anapole-driven field enhancement. When both conditions are met, we observe up to 102 SHG signal enhancement, compared to unstructured bilayers, with SHG conversion efficiency reaching ≈ 10-7. Our results highlights vdW materials as a platform for designing unique multilayer optical nanostructures and metamaterial, paving the way for advanced applications in nanophotonics and nonlinear optics.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"14 1","pages":"346"},"PeriodicalIF":23.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12477290/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145186269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical arbitrary waveform generation (OAWG) using actively phase-stabilized spectral stitching. 采用主动相位稳定谱拼接的光学任意波形产生（OAWG）。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-29 DOI: 10.1038/s41377-025-01937-4

Daniel Drayss, Dengyang Fang, Alban Sherifaj, Huanfa Peng, Christoph Füllner, Thomas Henauer, Grigory Lihachev, Lennart Schmitz, Tobias Harter, Wolfgang Freude, Sebastian Randel, Tobias J Kippenberg, Thomas Zwick, Christian Koos

{"title":"Optical arbitrary waveform generation (OAWG) using actively phase-stabilized spectral stitching.","authors":"Daniel Drayss, Dengyang Fang, Alban Sherifaj, Huanfa Peng, Christoph Füllner, Thomas Henauer, Grigory Lihachev, Lennart Schmitz, Tobias Harter, Wolfgang Freude, Sebastian Randel, Tobias J Kippenberg, Thomas Zwick, Christian Koos","doi":"10.1038/s41377-025-01937-4","DOIUrl":"10.1038/s41377-025-01937-4","url":null,"abstract":"The conventional way of generating optical waveforms relies on in-phase and quadrature (IQ) modulation of a continuous-wave (CW) laser tone. In this case, the bandwidth of the resulting optical waveform is limited by the underlying electronic components, in particular by the digital-to-analog converters (DACs) generating the drive signals for the IQ modulator. This bandwidth bottleneck can be overcome by using a concept known as optical arbitrary waveform generation (OAWG), where multiple IQ modulators and DACs are operated in parallel to first synthesize individual spectral slices, which are subsequently combined to form a single ultra-broadband arbitrary optical waveform. However, targeted synthesis of arbitrary optical waveforms from multiple spectral slices has so far been hampered by difficulties to maintain the correct optical phase relationship between the slices. In this paper, we propose and demonstrate spectrally sliced OAWG with active phase stabilization, which permits targeted synthesis of truly arbitrary optical waveforms. We demonstrate the viability of the scheme by synthesizing optical waveforms with record-high bandwidths of up to 325 GHz from four individually generated optical tributaries. In a proof-of-concept experiment, we use the OAWG system to generate 32QAM data signals at symbol rates of up to 320 GBd, which we transmit over 87 km of single-mode fiber and receive by a two-channel non-sliced optical arbitrary waveform measurement (OAWM) system, achieving excellent signal quality. We believe that our scheme can unlock the full potential of OAWG and disrupt a wide range of applications in high-speed optical communications, photonic-electronic digital-to-analog conversion, as well as advanced test and measurement in science and industry.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"14 1","pages":"353"},"PeriodicalIF":23.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12479824/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145191957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Light people: professor Fei Ding. 光人：丁飞教授。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-28 DOI: 10.1038/s41377-025-02043-1

Siqiu Guo

引用次数: 0

Electrodynamics of photonic temporal interfaces. 光子时间界面的电动力学。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-23 DOI: 10.1038/s41377-025-01947-2

Emanuele Galiffi, Diego Martínez Solís, Shixiong Yin, Nader Engheta, Andrea Alù

{"title":"Electrodynamics of photonic temporal interfaces.","authors":"Emanuele Galiffi, Diego Martínez Solís, Shixiong Yin, Nader Engheta, Andrea Alù","doi":"10.1038/s41377-025-01947-2","DOIUrl":"10.1038/s41377-025-01947-2","url":null,"abstract":"Exotic forms of wave control have been emerging by engineering matter in space and time. In this framework, temporal photonic interfaces, i.e., abrupt changes in the electromagnetic properties of a material, have been shown to induce temporal scattering phenomena dual to spatial reflection and refraction, at the basis of photonic time crystals and space-time metamaterials. Despite decades-old theoretical studies on these topics, and recent experimental demonstrations, the careful modeling of these phenomena has been lagging behind. Here, we develop from first principles a rigorous model of the electrodynamics of temporal photonic interfaces, highlighting the crucial role of the mechanisms driving time variations. We demonstrate that the boundary conditions and conservation laws associated with temporal scattering may substantially deviate from those commonly employed in the literature, based on their microscopic implementation. Our results open new vistas for both fundamental investigations over light-matter interactions in time-varying structures and for the prospect of their future implementations and applications in optics and photonics.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"14 1","pages":"338"},"PeriodicalIF":23.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12454649/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145125013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Miniaturized chaos-assisted Spectrometer. 小型化混沌辅助光谱仪。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-18 DOI: 10.1038/s41377-025-01984-x

Yujia Zhang, Chaojun Xu, Zhenyu Zhao, Yikai Su, Xuhan Guo

{"title":"Miniaturized chaos-assisted Spectrometer.","authors":"Yujia Zhang, Chaojun Xu, Zhenyu Zhao, Yikai Su, Xuhan Guo","doi":"10.1038/s41377-025-01984-x","DOIUrl":"10.1038/s41377-025-01984-x","url":null,"abstract":"Computational spectrometers are at the forefront of spectroscopy, promising portable, on-chip, or in-situ spectrum analysis through the integration of advanced computational techniques into optical systems. However, existing computational spectrometer systems have yet to fully exploit optical properties due to imperfect spectral responses, resulting in increased system complexity and compromised performance in resolution, bandwidth, and footprint. In this study, we introduce optical chaos into spectrum manipulation via cavity deformation, leveraging high spatial and spectral complexities to address this challenge. By utilizing a single chaotic cavity, we achieve high diversity in spectra, facilitating channel decorrelation of 10 pm and ensuring optimal reconstruction over 100 nm within an ultra-compact footprint of 20 × 22 μm2 as well as an ultra-low power consumption of 16.5 mW. Our approach not only enables state-of-the-art on-chip spectrometer performance in resolution-bandwidth-footprint metric, but also has the potential to revolutionize the entire computational spectrometer ecosystem.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"14 1","pages":"331"},"PeriodicalIF":23.4,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12446452/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145086388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-chip topological edge state cavities. 片上拓扑边缘态腔。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-18 DOI: 10.1038/s41377-025-02017-3

Wenhao Wang, Zhonglei Shen, Yi Ji Tan, Kaiji Chen, Ranjan Singh

引用次数: 0

Engineering topological chiral transport in a flat-band lattice of ultracold atoms. 超冷原子平带晶格中的工程拓扑手性输运。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-09-17 DOI: 10.1038/s41377-025-02025-3

Hang Li, Qian Liang, Zhaoli Dong, Hongru Wang, Wei Yi, Jian-Song Pan, Bo Yan

引用次数: 0

Amplify photo-avalanche nonlinearity beyond 500. 放大光雪崩非线性超过500。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-08-19 DOI: 10.1038/s41377-025-01950-7

Yawei Liu, Kai Liu, Hongjie Zhang

引用次数: 0

Electrically pumped surface-emitting amplified spontaneous emission from colloidal quantum dots. 胶体量子点的电泵表面发射放大自发发射。

IF 23.4 1区物理与天体物理

Light, science & applications Pub Date : 2025-08-19 DOI: 10.1038/s41377-025-01972-1

Fengshou Tian, Tianhong Zhou, Xuanyu Zhang, Rui Chen, Shuming Chen

{"title":"Electrically pumped surface-emitting amplified spontaneous emission from colloidal quantum dots.","authors":"Fengshou Tian, Tianhong Zhou, Xuanyu Zhang, Rui Chen, Shuming Chen","doi":"10.1038/s41377-025-01972-1","DOIUrl":"10.1038/s41377-025-01972-1","url":null,"abstract":"Colloidal quantum dots (QDs) are promising gain materials for realizing solution-processable, wavelength-tunable and low-cost laser diodes. However, achieving electrically pumped amplified spontaneous emission (ASE) in QDs, a prerequisite for lasing, is hampered by the low net optical gain and low current injection of the diodes. Here we demonstrate electrically pumped and surface-emitting ASE from QDs by electro-thermal-optically co-designing a quantum-dot light-emitting diode (QLED) with high net optical gain and high current injection. By developing a top-emitting cavity featuring a Ag/indium-zinc-oxide (IZO) bottom reflective electrode and a IZO/Ag top semi-transparent electrode, the QD emission is effectively resonated; moreover, not only are the surface plasmon polariton losses induced by the metallic electrodes completely eliminated, but also the optical field can be confined primarily within the QDs, resulting in a reduction in loss and a 2-fold enhancement in gain. As a result, the QLED exhibits surface-emitting ASE with a threshold of 10 μJ cm-2 when pumped by a 100 fs laser at 77 K. By building the QLED directly on a Si heat sink and driving the QLED with an ns-pulsed current source, the Joule heat is effectively dissipated, allowing the QLED to operate stably even at a high current of 2000 A cm-2. At 153 K and an injection current of 94 A cm-2, the QLED demonstrates surface-emitting ASE with strong directionality, high intensity and narrow bandwidth. The developed QLED, capable of generating surface-emitting ASE, paves the way for the development of QD based vertical cavity surface-emitting laser diodes.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"14 1","pages":"279"},"PeriodicalIF":23.4,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12365173/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144883130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0