Article
Chemistry, Multidisciplinary
Ruiqing Cheng, Lei Yin, Rui Hu, Huijun Liu, Yao Wen, Chuansheng Liu, Jun He
Summary: This study reports the modulation of a unique NDR effect in ambipolar black phosphorus transistors, which exhibit high peak current density and operating temperature. The NDR peak current and voltage can be effectively modulated by the strong coupling between the channel and the gate electrode.
ADVANCED MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Wenlei Li, Ruping Lin, Guangwei Chen, Gaoli Geng, Peng Xu, Yining Yang, Xinliang Wang, Jian Xu
Summary: We present experimental findings of three types of bound solitons in Erbium-doped fiber lasers using black phosphorus saturable absorber. The passively mode-locked laser generates stretched-pulse state, double-pulse, and four-pulse bound states with sech2-shaped pulse profile. By adjusting the polarization state, the laser can also achieve Lorentzian autocorrelation trace with a duration of approximately 562 fs and deliver Lorentzian double-pulse bound state with pulse separations of approximately 5.04 ps. This research demonstrates the possibility of obtaining different types of bound state pulses in the same fiber laser and provides a foundation for further studies on bound state pulses.
OPTICAL FIBER TECHNOLOGY
(2024)
Article
Multidisciplinary Sciences
Hanxue Jiao, Xudong Wang, Yan Chen, Shuaifei Guo, Shuaiqin Wu, Chaoyu Song, Shenyang Huang, Xinning Huang, Xiaochi Tai, Tie Lin, Hong Shen, Hugen Yan, Weida Hu, Xiangjian Meng, Junhao Chu, Yuanbo Zhang, Jianlu Wang
Summary: This study proposes a new generation infrared detector using a mixed-dimensional HgCdTe/black phosphorous van der Waals heterojunction photodiode for polarization-sensitive midwave infrared photodetection. The device achieves high performance without the need for additional polarization optics and cryogenic cooling. It offers a practical solution for next-generation infrared detectors with high operation temperature and multi-information acquisition.
Article
Optics
Bingxin Yan, Dongwei Li, Lanzhi Zhang, Tingting Xi, Yangjian Cai, Zuoqiang Hao
Summary: In this article, we experimentally investigate the performance of filamentation of femtosecond vortex laser pulses in turbulent air. We evaluate the pointing stability, longitudinal wandering, intensity, and spectral broadening by comparing them with femtosecond Gaussian laser pulses. The results show that femtosecond vortex pulses are less affected by air turbulence compared to Gaussian pulses, making them more stable for long-distance applications in the atmosphere.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Nuclear Science & Technology
Jun Luo, Zhiyu Tian, Li Li, Zhigao Ni, Xingquan Xie, Xiaowei Zhou
Summary: Laser pulse shaping is crucial for power balance in high-power laser facilities. We propose an artificial intelligence assisted method to accelerate the closed-loop control process by training a U-net model to predict the initial pulse waveform.
FUSION ENGINEERING AND DESIGN
(2023)
Article
Automation & Control Systems
Zhaojing Wu
Summary: This paper investigates the pulse width modulation (PWM) control for Lagrange systems driven by servo motors in a stochastic environment. The principles of PWM for stochastic nonlinear systems are proven, and a continuous control bounded in probability of the stochastic Lagrange system is designed. A stochastic closed-loop nonlinear programming is modeled in the same form as that in the deterministic case. The effectiveness of the proposed scheme is demonstrated by a simulation of articulated manipulator.
Article
Physics, Multidisciplinary
Waqas Sarwar Abbasi, Saba Ismail, Sumaira Nadeem, Hamid Rahman, Afraz Hussain Majeed, Ilyas Khan, Abdullah Mohamed
Summary: In this study, the numerical analysis of wake flow control of a single square cylinder by a flat plate is conducted using the lattice Boltzmann method. The study observes three different flow modes depending on the length of the plate. The presence of the plate leads to a reduction in drag and lift coefficients.
FRONTIERS IN PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Dheeraj K. Singh, B. Dikshit, R. Vijayan, Anchal Gupta, Jaya Mukherjee, V. S. Rawat
Summary: This article presents a novel approach to stabilize the laser's discharge plasma impedance by trigger modulation. The laser's impedance drops due to increased charge carriers during operation. By missing 0.1% of discharge pulse, the drop in voltage is improved from 4.3% to 2.3%, and the increase in current is limited to 3% from 3.6% after 6 hours of operation. The optical output power decreased by 10% at the end of 6 hours. This method also reduces thermal loading and instability in the discharge plasma, improving stability and reducing jitter in metal vapor lasers.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Jun Mei, Tianwei He, Juan Bai, Dongchen Qi, Aijun Du, Ting Liao, Godwin A. Ayoko, Yusuke Yamauchi, Litao Sun, Ziqi Sun
Summary: The introduction of nanosized iridium (Ir) modifier and optimized exposed surfaces towards electrolytes leads to an efficient Ir-modified BP electrocatalyst with favorable adsorption energies towards catalytic intermediates, showing outstanding pH-universal water splitting performance surpassing most reported BP-based and commercial noble-metal catalysts.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
L. Huang, B. Dong, Z. G. Yu, J. Zhou, Y. Ma, Y-W Zhang, C. Lee, K-W Ang
Summary: The study has realized a hybrid integration of mid-infrared black phosphorus modulator on silicon photonics waveguide, enabling efficient optical modulation by tuning the anisotropic absorption through gating effect. The integrated waveguide design promotes light-BP interaction and achieves high-performance optical modulation, demonstrating a versatile platform for compact on-chip mid-infrared optoelectronic devices.
MATERIALS TODAY ADVANCES
(2021)
Review
Chemistry, Multidisciplinary
Li Zeng, Xue Zhang, Yanna Liu, Xiaoxi Yang, Jiahong Wang, Qian Liu, Qian Luo, Chuanyong Jing, Xue-Feng Yu, Guangbo Qu, Paul K. Chu, Guibin Jiang
Summary: This article reviews the recent progress in surface and interface control of black phosphorus (BP). The topics covered include the intrinsic characteristics of BP surface and interfaces, strategies to tailor and optimize BP surface and interface, as well as challenges and prospects.
Article
Chemistry, Analytical
Zhiyi Yang, Wenbo Li, Hao Huang, Songlei Ren, Yongfan Men, Fang Li, Xuefeng Yu, Qian Luo
Summary: In this study, black phosphorus nanomaterial was utilized as the matrix for MALDI-MS, combined with microchannel technique, to effectively detect a variety of lipids with high sensitivity and reproducibility, and high salt tolerance. The method was successfully applied in detecting serum phospholipids in children patients with asthma or bronchopneumonia, providing new insights into the development of rapid screening and identification of disease indicators in biological fluids.
Article
Multidisciplinary Sciences
Dong Mao, Huaqiang Wang, Heze Zhang, Chao Zeng, Yueqing Du, Zhiwen He, Zhipei Sun, Jianlin Zhao
Summary: By engineering the intracavity group delay, mode-locked solitons at different wavelengths can be synchronized inside the laser cavity. Frequency-resolved measurements fully retrieve the fine temporal structure of pulses, validating the direct generation of synchronized ultrafast lasers from multiple wavelengths.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Yuhua Xie, Rufei Long, Zuhai Ma, Youzhi Shi, Jiahao Hong, Jiadong Wu, Chujun Zhao, Dianyuan Fan, Yu Chen
Summary: The generation of sub-200 fs pulsed vortex beams (VBs) at 1.7 μm was successfully achieved through a homemade mode-selective coupler, and cylindrical vector beams (CVBs) can also be obtained by controlling the linear superposition.
Article
Mechanics
Longhan Lin, Zhi Deng, Wenli Chen, Hui Li, Donglai Gao
Summary: In this study, self-adaptive nylon wires are used to manipulate wake vortex shedding and improve aerodynamic performance of a cylinder. Experimental investigation shows that the nylon wires can significantly suppress fluctuating lift forces on the cylindrical model and modify the wake-flow dynamics, leading to improved stability and performance of the aircraft.
Article
Computer Science, Hardware & Architecture
Xinping Min, Lanju Kong, Qingzhong Li, Yuan Liu, Baochen Zhang, Yongguang Zhao, Zongshui Xiao, Bin Guo
Summary: The research proposes a blockchain-native mechanism supporting complex physical assets, which can effectively record the influence of different associations on the transaction execution order and establish a global deterministic transaction execution sequence to ensure digital asset consistency.
Article
Geochemistry & Geophysics
Lingling Ma, Ning Wang, Yaokai Liu, Yongguang Zhao, Qijin Han, Xinhong Wang, Emma R. Woolliams, Marc Bouvet, Caixia Gao, Chuanrong Li, Lingli Tang
Summary: This study developed a method to simulate the adjacency effects in the radiometric calibration of space-borne remote sensors by constructing a local atmospheric point spread function model and considering background reflectance spectral information. The proposed modeling method effectively accounts for the influence of adjacency effects, as demonstrated by tests on Sentinel-2A and Worldview-3 imagery. The uncertainty assessment results show that the method can achieve a total uncertainty of less than 7%.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Optics
Jianlei Wang, Jifei Dong, Jian Liu, Zhanxin Wang, Xiaodong Xu, Yanyan Xue, Jun Xu, Chun Wang, Yongguang Zhao
Summary: In this study, a high-power continuous-wave Tm:YAG single-crystal fiber laser pumped by laser diodes at 791 nm was presented. The laser achieved a maximum output power of 63.3 W at a wavelength of around 2.01 μm, with a slope efficiency of 34.2%. The use of the wing pumping scheme and the specific structure of the crystal rod enabled uniform distribution of pump intensity and thermal load, improving power scalability.
Article
Optics
Di Xia, Zelin Yang, Pingyang Zeng, Bin Zhang, Jiayue Wu, Zifu Wang, Jiaxin Zhao, Jianteng Huang, Liyang Luo, Dong Liu, Shuixian Yang, Hairun Guo, Zhaohui Li
Summary: Integrated nonlinear photonics, with favorable optical materials, provide a potential platform for highly compact and high-intensity nonlinear interactions. In this work, a newly developed chalcogenide glass-Ge25Sb10S65 (GeSbS) is presented for nonlinear photonic integration and dissipative soliton microcomb generation. Chip-integrated optical microresonators with lithographically controlled dispersion engineering are implemented to generate both bright soliton-based and dark-pulse combs.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Yongguang Zhao, Changsheng Zheng, Zixuan Huang, Qinggang Gao, Jifei Dong, Kangzhen Tian, Zhiyong Yang, Weidong Chen, Valentin Petrov
Summary: This study demonstrates a single-crystal fiber laser amplifier that can directly amplify femtosecond optical vortices while maintaining their spatial properties. The optical nonlinearity experienced by these twisted light beams is weaker compared to fundamental mode beams. The simple design and power scaling capability of this amplifier pave the way for ultrahigh-intensity femtosecond singular laser sources. These laser sources can help reveal complex physical phenomena in light-matter interactions and expand applications in fields such as X-ray vortices, laser plasma acceleration, and micromachining.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Weidong Chen, Zhang-Lang Lin, Wen-Ze Xue, Huang-Jun Zeng, Ge Zhang, Pavel Loiko, Yongguang Zhao, Xiaodong Xu, Jun Xu, Xavier Mateos, Haifeng Lin, Li Wang, Valentin Petrov
Summary: In this study, a Kerr-lens mode-locked Yb:YAlO3 laser that generates soliton pulses as short as 24 fs was reported, representing the shortest pulses achieved so far from any Yb3+-doped structurally ordered crystal-based mode-locked laser. Optimized for power-scalable operation, the Yb:YAlO3 laser delivers 1.9 W at 1060 nm.
Article
Materials Science, Multidisciplinary
Kirill Eremeev, Pavel Loiko, Alain Braud, Patrice Camy, Jian Zhang, Xiaodong Xu, Yongguan Zhao, Peng Liu, Stanislav Balabanov, Elena Dunina, Alexey Kornienko, Liudmila Fomicheva, Xavier Mateos, Uwe Griebner, Valentin Petrov, Li Wang, Weidong Chen
Summary: A detailed spectroscopic study of a Tm3+-doped transparent sesquioxide ceramic was conducted, revealing its potential for generating ultrashort pulses.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Optics
Qingsong Song, Ning Zhang, Jian Liu, Xinyu Qian, Chaoyi Zhang, Yanyan Xue, Yongguang Zhao, Xiaodong Xu, Kheirreddine Lebbou, Jun Xu
Summary: The spectroscopic properties and tunable laser performances of Tm:GdScO3 crystal were studied for different crystallographic axes polarization. The polarized emission spectrum along the b-axis showed the broadest bandwidth among all single Tm3+-doped gain media, indicating the inhomogeneous line broadening and potential for few-optical-cycle pulse generation.
Article
Optics
Jie Xu, Jian Liu, Jun Guo, Dongzhen Li, Peng Liu, Xiaodan Wang, Yongguang Zhao, Xiaodong Xu, Jun Xu, Kheirreddine Lebbou
Summary: The Ho3+-doped CaY0.9Gd0.1AlO4 single crystal was grown by the Czochralski technique for the first time. The crystal’s polarized absorption spectra, luminescence spectra, and fluorescence decay curve were investigated at room temperature. The crystal exhibits strong emission at 2013 nm and 2032 nm for pi- and sigma-polarizations, respectively, with corresponding stimulated emission cross sections. The crystal was also demonstrated to operate as a continuous-wave laser around 2 μm.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Qiyao Liu, Taeheon Kim, Kyusup Lee, Dongsheng Yang, Dushyant Kumar, Fanrui Hu, Hyunsoo Yang
Summary: The high-frequency optical mode of α-Fe2O3 is studied, and it is found that Dzyaloshinskii-Moriya (DM) interaction generates a new type of torque on the magnetic resonance. The optical mode spectra is measured using a continuous-wave terahertz interferometer, and an asymmetric absorption with a large amplitude and broad linewidth is observed near the magnetic transition point, Morin temperature (T-M ≈ 254.3 K). Based on the spin wave model, the spectral anomaly is attributed to the DM interaction-induced torque, allowing for the extraction of a DM interaction field strength of 4 T. This work opens up a new avenue for characterizing spin resonance behaviors at antiferromagnetic singular points for next-generation and high-frequency spin-based information technologies.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jingshun Pan, Di Xia, Zifu Wang, Bin Zhang, Zhaohui Li
Summary: Optical frequency combs have revolutionized spectral measurement technologies, and chip-scale frequency combs based on microresonators are revolutionizing laser spectroscopy. Developing new photonic materials for integrated microcomb is critical, and the tutorial presents novel chalcogenide chip-based microcombs for broadband laser spectroscopy. The tutorial also reviews potent examples of dual-comb spectroscopy applications and discusses the challenges of realizing MIR microcombs for laser spectroscopy.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Peifu Wang, Yicheng Jin, Jiawen Lv, Ning Zhang, Mengxin Xue, Kuan Li, Lulu Dong, Junting Liu, Yongguang Zhao, Xiaodong Xu, Shande Liu
Summary: We report on the spectral properties and laser performances of a novel Tm,Ho:CYLA crystal. The crystal exhibits a broad and smooth luminescence band, making it an excellent laser medium for high-efficiency laser generation at 2μm. By utilizing a birefringent filter and a saturable absorber, the tuning range is extended and stable Q-switched laser output is achieved.
Article
Nanoscience & Nanotechnology
Qiyao Liu, Zhengtong Liu, Xuezhi Ma, Jie Deng, Chen Zhang, Zhenmin Chen, Arash Nemati, Sui Kit Ng, Sergey Gorelik, Siew Lang Teo, Rong Ji, Meng Zhao, Leonard Verano Gonzaga, Hong Liu, Fuyong Yue, Shaohua Yu, Yu Luo, Qian Wang
Summary: Metasurfaces composed of subwavelength elements can flexibly manipulate light in terms of phase, amplitude, and polarization at ultrathin dimensions. This article demonstrates that designed metagratings, which overcome the 2π phase constraint, allow for arbitrary control of the intensity ratio between adjacent diffraction orders while maintaining consistent diffraction directions. Incomplete phase metasurfaces hold great potential for developing various ultrathin nanophotonic devices with functionalities such as controllable beam splitters, spectrometers, and multifocal metalenses.
Proceedings Paper
Optics
Zhongben Pan, Pavel A. Loiko, Yicheng Wang, Yongguang Zhao, Hualei Yuan, Josep M. Serres, Weidong Chen, Li Wang, Uwe Griebner, Valentin Petrov, Magdalena Aguilo, Francesc Diaz, Xavier Mateos
Summary: This study compares the properties of three different doped calcium niobium gallium garnet crystals and finds that the crystal with added Li+ and La3+ cations exhibits good performance in laser generation and can achieve a wide tuning range of wavelengths.
SOLID STATE LASERS XXXI: TECHNOLOGY AND DEVICES
(2022)
Proceedings Paper
Optics
Zhongben Pan, Li Wang, Ji Eun Bae, Fabian Rotermund, Yicheng Wang, Yongguang Zhao, Pavel Loiko, Xavier Mateos, Uwe Griebner, Valentin Petrov, Weidong Chen
Summary: We report on the generation of sub-100-fs pulses from a passively mode-locked laser using a novel disordered crystal. The laser showed high slope efficiency in the continuous-wave regime and could be continuously tuned by using a filter.
SOLID STATE LASERS XXXI: TECHNOLOGY AND DEVICES
(2022)
