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SSRN 2022年

作者： Tao, Peidong Zhang, Hongping Huang, Lili Chen, Shi Shu, Hua Zhang, Zhiyou Li, Mu College of Physical Science and Technology Sichuan University Chengdu610064 China Shenzhen Key Laboratory of Ultra-intense Laser and Advanced Material Technology Center for Advanced Material Diagnostic Technology College of Engineering Physics Shenzhen Technology University Shenzhen518118 China Big Data and Internet College Shenzhen Technology University Shenzhen518118 China Shanghai Institute of Laser Plasma China Academy of Engineering Physics Shanghai201102 China

Direct laser drive is a promising way for dynamic compression or treatment of materials, and the transient ablation pressure is the key issue of loading history for extensive application. Here we report a direct, continuous measurement of normal /oblique incident 351 nm laser transient ablation pressure on Al target at the intensity of 0.01~10TW/cm 2 . Aluminum is deposited on LiF window, the ablation pressure on loading surface is inferred from the particle velocity of Al/LiF interface using backward integration method. An abnormal ablation pressure decline is found at the intensity of 0.1~1TW/cm 2 , which makes the ablation pressure as a function of laser intensity be off the theoretical exponential relation. Beyond the abnormal zone, it is found that the incident angle has the least effect when laser intensity is lower than 0.1 TW/cm 2 , but plays important role when laser intensity is higher than 1 TW/cm 2 , and the laser ablation pressure as a function of normal incident laser intensity adhere to exponential scaling law [[EQUATION]] . © 2022, The Authors. All rights reserved.

关键词： laser ablation

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Dissipation-Induced Extended-Localized Transition

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Physical Review Letters 2024年第21期132卷 216301-216301页

作者： Yaru Liu Zeqing Wang Chao Yang Jianwen Jie Yucheng Wang Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Intense Laser Application Technology and College of Engineering Physics Shenzhen Technology University Shenzhen 518118 China Department of Physics Renmin University of China Beijing 100872 China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China International Quantum Academy Shenzhen 518048 China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China

A mobility edge (ME), representing the critical energy that distinguishes between extended and localized states, is a key concept in understanding the transition between extended (metallic) and localized (insulating) states in disordered and quasiperiodic systems. Here we explore the impact of dissipation on a quasiperiodic system featuring MEs by calculating steady-state density matrix and analyzing quench dynamics with sudden introduction of dissipation. We demonstrate that dissipation can lead the system into specific states predominantly characterized by either extended or localized states, irrespective of the initial state. Our results establish the use of dissipation as a new avenue for inducing transitions between extended and localized states and for manipulating dynamic behaviors of particles.

关键词： Anderson localization Dissipative dynamics Localization 1-dimensional systems Quasicrystals

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Zeolite templated carbon nanodots for broadband ultrafast pulsed fiber laser generation

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Photonics Research 2019年第10期7卷 1182-1187页

作者： XINTONG XU JIAQI CHEN WENTAO SHI DALIN SUN SHAOWEN CHU LANG SUN WENFEI ZHANG YANPING CHEN JIANPANG ZHAI SHUANGCHEN RUAN ZIKANG TANG Center for Advanced Material Diagnostic Technology College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118China Shenzhen Key Laboratory of Laser Engineering Shenzhen UniversityShenzhen 518060China College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118China Institute of Applied Physics&Materials Engineering Faculty of Science and TechnologyUniversity of MacaoMacaoChina

Carbon nanodots(C-dots) with a uniform size of about 2 nm are synthesized via in situ pyrolysis of n-propylamine that is confined in the nanochannels of zeolite Linde Type A(LTA). The as-synthesized C-dots@LTA composite shows nonlinear optical saturable absorption properties in a broad wavelength band and can be used as saturable absorber(SA) to generate ultrafast pulsed fiber lasers. By inserting a zeolite LTA single crystal hosting C-dots into the fiber laser cavity, mode-locked fiber lasers with long-term operation stability at 1.5 μm and 1 μm are achieved. These results show that the C-dots@LTA are a promising SA material for ultrafast pulsed fiber laser generation in a broad wavelength band. To the best of our knowledge, this is the first demonstration of a C-dots@LTA-based mode-locked fiber laser.

关键词： fiber laser zeolite

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High Energy Yb∶YAG Regenerative Amplifier

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激光与光电子学进展 2021年第17期58卷 438-442页

作者： Zhu Wentao He Huijun Yu JunLin Qingdian Guo Xiaoyang Zhou Cangtao Ruan Shuangchen Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Advanced Material Diagnostic TechnologyCollege of Engineering PhysicsShenzhen Technology UniversityShenzhenGuangdong 518118China College of Physics and Optoelectronic Engineer Shenzhen UniversityShenzhenGuangdong 518060China

A diode pumped high energy Yb∶YAG rod regenerative amplifier was demonstrated with a maximum energy of22.3 m J,excellent energy stability(~0.8%root mean square),and beam quality(M2<1.2)at 10 Hz repetition *** the ... 详细信息

关键词： laser optics high energy Yb:YAG rod regenerative amplifier

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Floquet dynamics of the Rabi model beyond the counter-rotating hybridized rotating-wave method

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Physical Review A 2024年第5期109卷 053704-053704页

作者： Yingying Han Shuanghao Zhang Meijuan Zhang Q. Guan Wenxian Zhang Weidong Li Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Intense Laser Application Technology and College of Engineering Physics Shenzhen Technology University Shenzhen 518118 China Institute of Theoretical Physics Shanxi University Taiyuan 030006 China Department of Physics and Astronomy Washington State University Pullman Washington 99164-2814 USA Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology Wuhan University Wuhan Hubei 430072 China

Monochromatically driven two-level systems (i.e., Rabi models) are ubiquitous in various fields of physics. Though they have been exactly solved, the physical pictures in these exact solutions are not clear. Recently, approximate analytical solutions with neat physics have been obtained by using the counter-rotating hybridized rotating wave (CHRW) method, which has been proven to be effective over a wider range of parameters than the previous analytical solutions. However, the CHRW depends on a parameter ξ, which has no solution in some regimes. Here, we combine the double-unitary-transformation approach with the generalized Van Vleck nearly degenerate perturbation theory, and present approximate analytical results with clear physics for almost all parameter regimes, which agree well with the numerical solutions and the previous experimental results. Moreover, the dynamic frequencies of the Rabi model are regular, and the frequency with the highest Fourier amplitude changes from the Rabi frequency to 2nω with driving frequency ω and integer n, as the driving intensity increases from weak to deep-strong. In addition, we further explore the Floquet dynamics of the dissipative open Rabi model. Remarkably, the dissipations are tunable in the rotating frame, and the approximate analytical results obtained by our method are in good agreement with the numerical results in the strong driving regime. These results pave the way to quantum control using strong and deep-strong driving with applications in quantum technologies.

关键词： Atomic, optical & lattice clocks Light-matter interaction Quantum optics

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Multioptical bottles from the chirped circular Bessel Gaussian beams carrying annular spiral-zone power-exponent-phase

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Results in Physics 2024年 60卷

作者： Yu, Jian Tong, Shandong Long, Huihong Luo, Yuan Zheng, Peichao Yan, Zhonghua Bai, Zhiyong Zhang, Zhe Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology School of Optoelectronic Engineering Chongqing University of Post and Telecommunications Chongqing 400065 China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China Shenzhen Key Laboratory of Ultra-Intense Laser and Advanced Material Technology Center for Intense Laser Application Technology and College of Engineering Physics Shenzhen Technology University Shenzhen 518118 China

In this paper, we introduce a new structure of multioptical bottles formed by the chirped circular Bessel Gaussian beams carrying annular spiral-zone power-exponent-phase (ASP). The ASP is a general term for complex phases composed of the radial phase, equiphase, and power spiral phase. By combining the influence of autofocusing properties, chirp factor, and ASP mode, the propagation dynamics of the proposed multioptical bottles beam such as the sizes, lengths, number and locations can be flexibly manipulated. Intriguingly, the effect of the power order of ASP mode on the beam propagation dynamics is firstly introduced and examined. The proposed beams can enable diversification the optical tweezers system in multiparticle manipulation, which is verified by the radiation force analysis on a Rayleigh particle. © 2024

关键词： Chirped circular Bessel Gaussian beams Multioptical bottles Power order Radiation force

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Unveiling high-mobility hot carriers in a two-dimensional conjugated coordination polymer

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Nature materials 2025年 1-8页

作者： Fu, Shuai Huang, Xing Gao, Guoquan St. Petkov, Petko Gao, Wenpei Zhang, Jianjun Gao, Lei Zhang, Heng Liu, Min Hambsch, Mike Zhang, Wenjie Zhang, Jiaxu Li, Keming Kaiser, Ute Parkin, Stuart S. P. Mannsfeld, Stefan C. B. Zhu, Tong Wang, Hai I. Wang, Zhiyong Dong, Renhao Feng, Xinliang Bonn, Mischa Center for Advancing Electronics Dresden and Faculty of Chemistry and Food Chemistry Technische Universität Dresden Dresden Germany Max Planck Institute for Polymer Research Mainz Germany Laser Micro/Nano Fabrication Laboratory School of Mechanical Engineering Beijing Institute of Technology Beijing China Faculty of Chemistry and Pharmacy University of Sofia Sofia Bulgaria State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Future Material Innovation Center Zhangjiang Institute for Advanced Study Shanghai Jiao Tong University Shanghai China Center for Advancing Electronics Dresden and Faculty of Electrical and Computer Engineering TUD Dresden University of Technology Dresden Germany Max Planck Institute of Microstructure Physics Halle (Saale) Germany Central Facility for Materials Science Electron Microscopy Universität Ulm Ulm Germany Nanophotonics Debye Institute for Nanomaterials Science Utrecht University Utrecht Netherlands Department of Chemistry The University of Hong Kong Hong Kong Materials Innovation Institute for Life Sciences and Energy (MILES) HKU-SIRI Shenzhen China

Hot carriers, inheriting excess kinetic energy from high-energy photons, drive numerous optoelectronic applications reliant on non-equilibrium transport processes. Although extensively studied in inorganic materials, their potential in organic-based systems remains largely unexplored. Here we demonstrate highly mobile hot carriers in crystalline two-dimensional conjugated coordination polymer Cu₃BHT (BHT, benzenehexathiol) films. Leveraging a suite of ultrafast spectroscopic and imaging techniques, we map the microscopic charge transport landscape in Cu₃BHT films following non-equilibrium photoexcitation across temporal, spatial and frequency domains, revealing two distinct high-mobility transport regimes. In the non-equilibrium regime, hot carriers achieve an ultrahigh mobility of ~2,000 cm² V^–1 s^–1, traversing grain boundaries up to ~300 nm within a picosecond. In the quasi-equilibrium regime, free carriers exhibit Drude-type, band-like transport with a remarkable mobility of ~400 cm² V^–1 s^–1 and an intrinsic diffusion length exceeding 1 μm. These findings position two-dimensional conjugated coordination polymers as versatile platforms for advancing organic-based hot carrier applications. © The Author(s) 2025.

关键词： Hot electrons

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High-performance femtosecond-laser microfabricated lattice-like-cladding waveguides in Er³⁺ and MgO co-doped LiNbO₃ crystals for multi-wavelength guidance and luminescence

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Results in Physics 2024年 61卷

作者： Lv, Jinman Li, Ge Duan, Yumeng Zheng, Xinzhi Ma, Yujie Chen, Feng Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Intense Laser Application Technology and College of EngineeringPhysics Shenzhen Technology University Shenzhen 518118 China School of Physics State Key Laboratory of Crystal Materials Shandong University Jinan 250100 China

We report on microfabrication of the straight and S-shaped waveguides with lattice-like-cladding structures in Er3+ and MgO co-doped LiNbO3 by femtosecond laser writing. The waveguides with so-called Type II geometry ... 详细信息

We report on microfabrication of the straight and S-shaped waveguides with lattice-like-cladding structures in Er³⁺ and MgO co-doped LiNbO₃ by femtosecond laser writing. The waveguides with so-called Type II geometry support fundamental-mode propagation of light at near-infrared wavelength of 1550 nm and mid-infrared wavelength of 4 μm, which was experimentally and numerically investigated. In addition, it has been found that the guidance is only along the perpendicular (i.e., TE) polarization, which can be produced through controlling the femtosecond laser's parameters and direction. The green up-conversion at 550 nm under ⁴S_3/2 → ⁴I_15/2 transitions as well as the near-infrared luminescence at 1530 nm under ⁴I_13/2 → ⁴I_15/2 transition have been realized in the waveguides, and the resulting up-conversion luminescence efficiency was higher than Type I waveguides, which proved the Type II WGs can preserve and inspire the properties of the materials. © 2024 The Author(s)

关键词： Femtosecond laser microfabrication Green up-conversion Lithium niobate Multi-wavelength waveguide

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Brilliant Green: A long-buried water-soluble AIEgen with nearinfrared fluorescence for living cell actin staining 3

Brilliant Green: A long-buried water-soluble AIEgen with nea...

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3rd International Conference on Biomedical and Intelligent Systems, IC-BIS 2024

作者： Liu, Luxuan Wu, Yayun Tang, Dongbao Jia, Zhaoyuan Wang, Jiaoli Gong, Ping Fang, Xiaohong Tan, Yuyu Zhang, Pengfei School of Electrical Engineering Hunan Province Key Laboratory for Ultra-Fast Micro/Nano Technology and Advanced Laser Manufacture University of South China Hengyang421001 China Beijing National Research Center for Molecular Sciences Institute of Chemistry Key Laboratory of Molecular Nanostructure and Nanotechnology Chinese Academy of Science Beijing100190 China Guangdong Key Laboratory of Nanomedicine CAS-HK Joint Lab of Biomaterials CAS Key Laboratory of Biomedical Imaging Science and System Shenzhen Engineering Laboratory of Nanomedicine and Nanoformulations CAS Key Lab for Health Informatics Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen518055 China

ISBN: (纸本)9781510681279

Observation of actin in cells is crucial for the investigation of cell motility, protein transcription, pathogen infection, and cell cycle research. In this study, we have identified Brilliant Green (BG) as a water-soluble AIEgen (luminogen with aggregation-induced emission properties) that can be utilized for actin staining. Our experimental findings highlight the effectiveness of BG for long-term live cell imaging, as well as its remarkable stability and resistance to photobleaching. © 2024 SPIE.

关键词： Photobleaching

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Branching of high-current relativistic electron beam in porous materials

arXiv

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arXiv 2023年

作者： Jiang, K. Huang, T.W. Li, R. Yu, M.Y. Zhuo, H.B. Wu, S.Z. Zhou, C.T. Ruan, S.C. Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Advanced Material Diagnostic Technology College of Engineering Physics Shenzhen Technology University Shenzhen518118 China College of Applied Sciences Shenzhen University Shenzhen518060 China

Propagation of high-current relativistic electron beam (REB) in plasma is relevant to many high-energy astrophysical phenomena as well as applications based on high-intensity lasers and charged-particle beams. Here we report a new regime of beam-plasma interaction arising from REB propagation in medium with fine structures. In this regime, the REB cascades into thin branches with local density hundred times the initial value and deposits its energy two orders of magnitude more efficiently than that in homogeneous plasma, where REB branching does not occur, of similar average density. Such beam branching can be attributed to successive weak scatterings of the beam electrons by the unevenly distributed magnetic fields induced by the local return currents in the skeletons of the porous medium. Results from a model for the excitation conditions and location of the first branching point with respect to the medium and beam parameters agree well with that from pore-resolved particle-in-cell simulations. Copyright © 2023, The Authors. All rights reserved.

关键词： Porous materials

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