Laser & Photonics Reviews最新文献_第5页

3D Characterization of Spatiotemporally Coupled High Harmonic Attosecond Pulses

IF 11 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-06 DOI: 10.1002/lpor.202401675

Mingdong Yan, Yaodan Hu, Zijuan Wei, Zhengyan Li

{"title":"3D Characterization of Spatiotemporally Coupled High Harmonic Attosecond Pulses","authors":"Mingdong Yan, Yaodan Hu, Zijuan Wei, Zhengyan Li","doi":"10.1002/lpor.202401675","DOIUrl":"https://doi.org/10.1002/lpor.202401675","url":null,"abstract":"Manipulation of ultrafast laser fields across the temporal, spatial, and spectral domains can result in a spatiotemporally coupled structure of light, which cannot be mathematically decomposed into the product of spatial and temporal profiles. However, this spatiotemporal coupling effect may degrade the focusability of ultrafast laser pulses at large-scale laser facilities. As ultrafast science has advanced from femtosecond to attosecond time scales, coherent attosecond optical pulses have become accessible through high harmonic generation, an extremely nonlinear optical process that produces an enhanced spatiotemporal coupling effect. Limited studies have explored the spatiotemporal coupling of high harmonic attosecond pulses owing to the lack of 3D characterization of attosecond optical fields. This study addresses this limitation by providing a 3D characterizing of the spatiotemporal optical field profiles of high harmonic attosecond pulses and investigating their physical spatiotemporal coupling effects. The spatiotemporal coupling of high harmonic attosecond pulses is quantitatively evaluated via a newly defined parameter that incorporates phase contributions in the time-space domain, which may likely correlate with the inhomogeneous intrinsic atomic dipole phase determined by the driving laser intensity. This physical insight, combined with the 3D optical field metrology, can potentially benefit extreme UV nonlinear optics and attosecond dynamic imaging.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"22 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Programmable Photonic Extreme Learning Machines

IF 11 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-06 DOI: 10.1002/lpor.202400870

José Roberto Rausell-Campo, Antonio Hurtado, Daniel Pérez-López, José Capmany Francoy

{"title":"Programmable Photonic Extreme Learning Machines","authors":"José Roberto Rausell-Campo, Antonio Hurtado, Daniel Pérez-López, José Capmany Francoy","doi":"10.1002/lpor.202400870","DOIUrl":"https://doi.org/10.1002/lpor.202400870","url":null,"abstract":"Photonic neural networks offer a promising alternative to traditional electronic systems for machine learning accelerators due to their low latency and energy efficiency. However, the challenge of implementing the backpropagation algorithm during training has limited their development. To address this, alternative machine learning schemes, such as extreme learning machines (ELMs), are proposed. ELMs use a random hidden layer to increase the feature space dimensionality, requiring only the output layer to be trained through linear regression, thus reducing training complexity. Here, a programmable photonic extreme learning machine (PPELM) is experimentally demonstrated using a hexagonal waveguide mesh, and which enables to program directly on chip the input feature vector and the random hidden layer. This system also permits to apply the nonlinearity directly on-chip by using the system's integrated photodetecting elements. Using the PPELM, three different complex classification tasks are solved successfully. Additionally, two techniques are also proposed and demonstrated to increase the accuracy of the models and reduce their variability using an evolutionary algorithm and a wavelength division multiplexing approach, obtaining excellent performance. These results show that programmable photonic processors may become a feasible way to train competitive machine learning models on a versatile and compact platform.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"11 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

High Quantum Yields Enhancement Induced by Processable AIEgens Doped Photonic Crystal Powders for Bright Luminescence and Structural Colors

IF 11 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-06 DOI: 10.1002/lpor.202401970

Chuyu Qiao, Tianyi Liu, Suli Wu

{"title":"High Quantum Yields Enhancement Induced by Processable AIEgens Doped Photonic Crystal Powders for Bright Luminescence and Structural Colors","authors":"Chuyu Qiao, Tianyi Liu, Suli Wu","doi":"10.1002/lpor.202401970","DOIUrl":"https://doi.org/10.1002/lpor.202401970","url":null,"abstract":"The composite solid-state structure of photonic crystals (PCs) and aggregation-induced-emission agents (AIEgens) exhibits potential for various applications, owing to its remarkable anti-aggregation quenching effect and exceptional fluorescence tuning ability. Herein, TVP molecules integrate into PCs by one-step co-assembly of TVP molecules and PMMA colloidal spheres. By carefully optimizing the assembly conditions, a kind of AIEgens doped structures fabricate, which exhibit vibrant structural color, bright fluorescence, and especially impressive luminescence quantum yield up to 0.838. Importantly, after being grounded into micron-scale PC powders, the AIEgens doped PCs retain their good optical properties and exhibit exceptional light and thermal stability. Compared with the polymer film or deposited films on substrates of the previously reported composite PCs and AIEgens, the powder state endows them with good processibility, enabling them to be seamlessly integrate with various polymers to meet the diverse requirements of different processing techniques. The good processability facilitates the production of 2D or 3D models that possess both vivid structural color and bright luminescence. Moreover, the co-assembly strategy of fabricating AIEgens doped PCs powders can be employed for the colloidal spheres with varying diameters or diverse AIEgens, thereby enabling the generation of adjustable luminescence and structural color, thus substantially broadening the potential application scenarios.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"1 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Quantum Holographic Microscopy

IF 11 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-06 DOI: 10.1002/lpor.202401909

Ling-Jun Kong, Jingfeng Zhang, Zhuo Zhang, Xiangdong Zhang

{"title":"Quantum Holographic Microscopy","authors":"Ling-Jun Kong, Jingfeng Zhang, Zhuo Zhang, Xiangdong Zhang","doi":"10.1002/lpor.202401909","DOIUrl":"https://doi.org/10.1002/lpor.202401909","url":null,"abstract":"Quantitative phase microscopy (QPM) techniques are widely investigated for imaging transparent specimens, such as cells and tissues. The sensitivity and resolution of conventionally used QPM are fundamentally limited by environmental noise. Recently, quantum phase microscopy has been proposed. The research on it has made some progress and has shown many advantages over the classical one, such as greater robustness and higher contrast. However, the phase resolution of existing quantum phase microscopies remains very low, often confined to the qualitative measurement level. Here, to resolve these practical limitations, we introduced polarization entanglement-enabled quantum holographic technology into the microscopy system and constructed a new type of quantum phase microscopy, namely quantum holographic microscopy. By improving the existing quantum holographic scheme, our microscope system can be used to measure both various non-biological phase samples and label-free biological samples. The experimental results show that the phase resolution is improved by an order of magnitude compared with that of existing quantum phase microscopes. Moreover, the system has good robustness and can still obtain clear images in the presence of strong classical noise. The newly constructed quantum microscopic system is expected to have broad applications in industrial production, medicine, biological research, and other fields.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"1 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Rewritable ITO Patterning for Nanophotonics

IF 11 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-04 DOI: 10.1002/lpor.202401799

Xinqin Liu, Pan Peng, Zhenyang Zhang, Xiangyu Zhao, Wenyu Chen, Shiyuan Liu, Jinlong Zhu

{"title":"Rewritable ITO Patterning for Nanophotonics","authors":"Xinqin Liu, Pan Peng, Zhenyang Zhang, Xiangyu Zhao, Wenyu Chen, Shiyuan Liu, Jinlong Zhu","doi":"10.1002/lpor.202401799","DOIUrl":"https://doi.org/10.1002/lpor.202401799","url":null,"abstract":"Nanophotonic devices leverage unique interactions between photons and materials at the nanoscale, enabling applications in optical communication, biosensing, and quantum computing. These devices' properties are susceptible to material composition and structural design. Nanofabrication techniques, such as optical lithography, e-beam lithography, two-photon polymerization, and direct laser writing, have been widely applied to fabricate nanophotonic devices. Notably, rewritable fabrication stands out due to its low cost, flexibility, efficiency, and multi-functionality. In this paper, a novel rewritable nanofabrication technique is proposed, which combines electrochemical reactions with direct laser writing, to fabricate nanophotonic devices on low-cost indium tin oxide (ITO) films. The experimental results have demonstrated that high-quality and erasable photonic structures such as diffraction gratings and holography masks can be directly fabricated using our technique. Hence, it is believed that this method can be applied in diverse fields such as nanophotonics, optoelectronic devices, biosensors, micro-electromechanical systems, and nonlinear optics.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143083904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Rapid Whole-Organ Characterization via Quantitative Light-Sheet Microscopy (Laser Photonics Rev. 19(3)/2025)

IF 9.8 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-04 DOI: 10.1002/lpor.202570010

Lingmei Chen, Yijun Su, Shuhao Qian, Lingxi Zhou, Tao Han, Chuncheng Wang, Rushan Jiang, Zhihua Ding, Min Guo, Zhiyi Liu

引用次数: 0

Wavelet-Forward Family Enabling Stitching-Free Full-Field Fourier Ptychographic Microscopy (Laser Photonics Rev. 19(3)/2025)

IF 9.8 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-04 DOI: 10.1002/lpor.202570009

Hao Wu, Jiacheng Wang, Haoyu Pan, Jifu Lyu, Shuhe Zhang, Jinhua Zhou

引用次数: 0

Terahertz GaAs Indicator Chip Based on High-Q-Factor Spoof Localized Surface Plasmons Resonator

IF 11 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-04 DOI: 10.1002/lpor.202401749

Ming Wan, Jiangpeng Wang, Di Bao, Fei Fan, Hao Gao, Zhen Yu Qu, Tie Jun Cui

{"title":"Terahertz GaAs Indicator Chip Based on High-Q-Factor Spoof Localized Surface Plasmons Resonator","authors":"Ming Wan, Jiangpeng Wang, Di Bao, Fei Fan, Hao Gao, Zhen Yu Qu, Tie Jun Cui","doi":"10.1002/lpor.202401749","DOIUrl":"https://doi.org/10.1002/lpor.202401749","url":null,"abstract":"Spoof localized surface plasmons (spoof LSPs, SLSPs) have recently emerged as high-quality-factor (Q-factor) multipole electromagnetic resonant structures, showcasing considerable promise in the field of sensing. However, sensing in the terahertz band presents notable challenges. Here, a dual-port coupled SLSPs resonator and a single-port coupled SLSPs resonator are proposed with phase separated excitation, both exhibiting high-Q-factors in the terahertz band. The dual-port coupled SLSPs can sustain both odd resonance mode and even resonance mode, whereas the single-port coupled SLSPs can generate vortex wave resonance modes and asymmetric modes. In the measurement, the highest Q value of the dual-port resonator is 69 at the frequency of 179.4 GHz. Equally noteworthy is the single-port resonator, which reaches a groundbreaking Q-factor of 405.4 at the frequency of 150 GHz, marking a significant advancement in the Q-factors of passive devices. Biosensing for Bletilla, Fritillaria, Rhubarb, and glucose in the terahertz band is implemented, with the maximum frequency shift of 15.8 GHz for the dual-port coupled SLSPs and 7.8 GHz for the single-port coupled SLSPs. The maximum sensing figures of merits (FoM) are 4.1 and 12.9RIU<sup>−1</sup> for the dual- and single-port resonators, respectively, underscoring substantial potentials of this work in the realm of terahertz sensing.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"29 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143124713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Remote Vector Velocimetry with Fiber-Delivered Scalar Fields (Laser Photonics Rev. 19(3)/2025)

IF 9.8 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-04 DOI: 10.1002/lpor.202570011

Ziyi Tang, Zhenyu Wan, Xi Zhang, Yize Liang, Jian Wang

引用次数: 0

Issue Information: Laser & Photon. Rev. 19(3)/2025

IF 9.8 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-02-04 DOI: 10.1002/lpor.202570012

引用次数: 0