Article
Mathematics, Interdisciplinary Applications
Jiaxin Dai, Jiali Zeng, Wei Hu, Daquan Lu
Summary: This paper quantitatively studies the equilibrium bound state and the oscillating bound state of pure-quartic solitons (PQSs). By analyzing the Lagrangian of the system, the analytic expression of the effective interaction potential is obtained, which facilitates the prediction of the critical separation between interacting PQSs in the equilibrium bound state. Furthermore, the oscillation period of PQSs in the oscillating bound state is studied by drawing an analogy between the evolution of PQS pairs and the motion of a Newtonian particle in a potential well. The derived effective mass and force lead to a semi-analytic expression for the oscillation period. These results provide valuable insights into the evolution of interacting PQSs in the two types of bound states.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Optics
Jiayang Li, Xingliang Li, Dan Yan, Jingmin Liu, Chaoran Wang, Huijie Li, Shumin Zhang
Summary: In this study, stable bound pulses (BPs) were numerically obtained in an all-normal-dispersion fiber laser (ANDFL) using white noise as the initial field. It was found that there is a rhythmic behavior of the number of dissipative solitons (DSs) with the pump power, and higher pump power can trigger more frequent soliton explosions.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
F. Sanchez, A. Komarov, G. Semaan
Summary: Increasing pulse energy directly from a fiber laser oscillator is challenging due to the quantization of pulse energy in fiber lasers. One promising technique is the dissipative soliton resonance (DSR) effect, which manifests as a square-wave pulse with constant peak power and increasing energy and duration with increasing pumping power. DSR is favored experimentally using long or ultra-long cavities and has been observed with various rare-earth doped fibers. This paper provides a comprehensive review of DSR in fiber lasers, including theoretical background and relevant experimental results.
OPTICS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Zikai Chen, Jian Zhou, Junqing Zhao
Summary: In this paper, we present an opto-mechanical scheme in a passively mode-locked fiber laser to switch the soliton bound state through the manipulation of local modal-birefringence. This method effectively eliminates the undesired distortions and ensures repeatability during manipulations of pulse dynamics.
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Wen-Yan Zhang, Kun Yang, Li-Jie Geng, Nan-Nan Liu, Yun-Qi Hao, Tian-Hao Xian, Li Zhan
Summary: The experimental observations demonstrate the generation of domain-wall solitary pulses using a net anomalous dispersion Er-doped fiber ring laser without polarization-selective elements. By adjusting the pump power and polarization state appropriately, both bright and dark solitons can stably co-exist in the cavity. The use of a thulium-doped fiber as the saturable absorber enables the laser to exhibit good stability, which may have a significant impact on improving pulse-laser design and expanding practical applications in optical sensing, optical communication, and soliton multiplexed systems.
Article
Optics
Xiang-Yue Li, Yu-Xin Gao, Meng Liu, Ai-Ping Luo, Zhi-Chao Luo, Wen-Cheng Xu
Summary: This study presents a watt-level, repetition-rate-switchable all-fiber chirped pulse amplification system using the polarization-dependent dissipative soliton intensity modulation effect. The system is capable of dynamically switching the output pulse repetition rate between 1.37 MHz and 2.74 MHz. Through adjusting the dissipative soliton polarization state, a high intensity modulation depth of approximately 100% is achieved, facilitating the dynamic tuning of pulse repetition rate in high power laser systems.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Mengyun Hu, Jiawei Shen, Yuzhi Cao, Shuai Yuan, Heping Zeng
Summary: We present a fundamentally mode-locked Yb-doped solid-state fiber laser with a repetition rate of 1 GHz and a pulse duration of 48 fs. By employing nonlinear-polarization-evolution (NPE) mode-locking, the laser achieves an average power of up to 286 mW and a spectrum bandwidth of 26 nm, supporting a 48 fs pulse duration. The laser can self-start and the central wavelength is tunable from 1032.4 nm to 1035.6 nm. To the best of our knowledge, this is the shortest pulse duration directly obtained by GHz fundamentally mode-locked Yb-fiber lasers.
Article
Optics
Dan Luo, Jia Zeng, Quan Zhao, Jianxing Pan, Chaoyu Xu, Beibei Yu, Xiangli Zhang, Zhichao Wu, Tianye Huang
Summary: We demonstrate the interaction between different types of vector solitons in a mode-locked fiber laser. By adjusting pump power and cavity birefringence, single, dual, and bound state vector solitons can be selectively acquired, and all types of vector solitons exhibit energy exchange phenomenon on spectral sidebands. Numerical simulation confirms the key role of soliton separation in determining the formation of energy exchange sidebands. These findings provide insights into the evolution of soliton interaction and enhance the understanding of soliton dynamics.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Jiaqiang Lin, Zhipeng Dong, Tianhao Dong, Yiming Zhang, Chuansheng Dai, Peijun Yao, Chun Gu, Lixin Xu
Summary: In this paper, we demonstrate an all-fiber wavelength-tunable noise-like pulse (NLP) laser with a tunable central wavelength from 1547 nm to 1600 nm based on a fiber loop mirror (FLM). The FLM fused with two segments of polarization-maintaining fibers (PMF) acts as both a comb filter and a saturable absorber (SA), making it suitable for applications in the C-band and L-band.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Lingxiao Liu, zhiwen He, Qun Gao, Yueqing DU, Chao Zeng, Dong Mao
Summary: Researches experimentally and numerically revealed the formation and evolution of solitons in few-mode fiber lasers, the behavior of LP11 pulse transforming into LP01 pulse, and the stabilization of soliton fiber lasers.
Article
Chemistry, Physical
Shuai Yuan, Lu Si, Jianing Chen, Junyu Chen, Han Yu
Summary: In this study, we reported a method to directly generate high-power and short-duration pulses from a passive mode-locked Yb-fiber laser oscillator with a figure-of-9 configuration. By introducing strongly injected pump power and optical components with a high damage threshold, high-power operation was achieved, while the polarization-maintaining fiber supported environmentally stable self-started mode-locking.
Article
Mathematics, Interdisciplinary Applications
Ru-Ru Wang, Wen-Bo Bo, Hao-Bin Han, Chao-Qing Dai, Yue-Yue Wang
Summary: In this study, the transport dynamics of vector solitons in ytterbium-doped fiber lasers were numerically investigated using a coupled Ginzburg-Landau equation with higher-order effects. It was found that the number of soliton molecules can be manipulated by adjusting the small signal gain coefficient and intracavity birefringence, leading to the realization of synchronous and asynchronous vector soliton transmission and the generation of chaotic pulse sequences. The proposed model has universal application value and the numerical results provide guidance for studying polarization tunable lasers and exploring the nonlinear mechanism in fiber lasers.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Instruments & Instrumentation
Luoyang Chen, Guangwei Chen, Ying Qin, Li Chen, Yue Zhao, Huiyu Li, Hongbo Huang, Zhehai Zhou, Guoqing Hu
Summary: This study experimentally investigates the extracavity propagation of amplified bound-state soliton pulses from a passively single-wall carbon nanotube mode-locked fiber laser. The results show that under proper configuration, the bound-state pulses exhibit a modulated optical spectrum with additional sidelobes. The study also examines the impact of extracavity erbium-doped fiber amplification and the change of pulse separation when adjusting the extracavity polarization controller.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Fuhao Yang, Zhiqi Sui, Shuo Sun, Si Chen, Yanjuan Wang, Weiyu Fan, Shuaimeng Li, Guomei Wang, Wenfei Zhang, Cheng Lu, Shenggui Fu, Huanian Zhang
Summary: In this work, a saturable absorber (SA) based on chromium sulfide (Cr2S3) was prepared and different operation modes were observed in a fiber laser. The experimental results demonstrated that Cr2S3, as a promising 2D material, has tremendous potential in designing ultrafast photonics devices.
Article
Physics, Multidisciplinary
G. A. Tsolias, Robert J. Decker, A. Demirkaya, Tristram J. Alexander, P. G. Kevrekidis
Summary: The study investigates the interaction of solitary waves in the well-known phi (4) Klein-Gordon theory, identifying three distinct cases based on the competition of linear operators with different effects. Each case results in a different form of inter-wave interaction, including oscillatory, exponential, and linearly modulated exponential effects. The acceleration as a function of separation distance is calculated and tested to confirm agreement with predictions from ordinary and partial differential equations, while explanations for disparities are provided.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2021)
Article
Physics, Applied
Yan Li, Jin Zhang, Feng Wu, Guanghui Liu, Xiaosheng Xiao
Summary: We present a fast dual-comb spectroscopy technique utilizing a high-repetition-rate dual-wavelength erbium-doped fiber laser with a significant repetition rate difference. It can operate in three different dual-wavelength states with repetition rate differences of 4.32, 2.74, and 3.635 kHz, respectively. The corresponding refresh time can be as low as 231 μs, making it the fastest in dual-comb spectroscopy using a single-mode-locked all-fiber laser. The high repetition rate of approximately 154.68 MHz provides a maximum optical frequency bandwidth of 4.37 THz. Dual-comb spectroscopy was employed to measure the transmittance curve of a Fabry-Perot etalon.
APPLIED PHYSICS EXPRESS
(2023)
Article
Optics
Chenxin Gao, Bo Cao, Yihang Ding, Xiaosheng Xiao, Dali Yang, Hongyang Fei, Changxi Yang, Chengying Bao
Summary: Spatiotemporal mode-locking (STML) has been extended into spatiotemporal dissipative solitons in multi-mode fiber (MMF) lasers. Previous STML in MMF lasers used graded-index (GRIN) MMFs. This study presents experimental and numerical observation of STML in an all-step-index (STIN) MMF laser, and proposes a mother-child coupling mechanism to understand the walk-off between mode-resolved pulses. The work enriches MMF laser architectures for STML in a previously unexplored parameter regime.
Article
Chemistry, Multidisciplinary
Junyi Liao, Wen Wen, Juanxia Wu, Yaming Zhou, Sabir Hussain, Haowen Hu, Jiawei Li, Adeel Liaqat, Hongwei Zhu, Liying Jiao, Qiang Zheng, Liming Xie
Summary: We have designed an in-memory computing device, MOfeS-FET, based on van der Waals ferroelectric semiconductor (InSe), which integrates memory and logic functions in the same material. It shows long retention time, high on/off ratios, stable cyclic endurance, and is capable of performing inverter, programmable NAND, and NOR Boolean logic operations with nonvolatile storage of the results.
Article
Chemistry, Multidisciplinary
Zechen Li, Meirong Huang, Jing Li, Hongwei Zhu
Summary: Researchers have discovered that high-quality ultrathin 1T-PtSe2 can be synthesized on Au foils using a simple chemical vapor deposition method. The experimental results confirm that these ultrathin 1T-PtSe2 ribbons possess abundant catalytic sites and can serve as ideal electrocatalysts. This study advances the large-scale synthesis and potential application of ultrathin transition metal disulfides and presents a novel method for designing and synthesizing highly active ultrathin catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Pan Wang, Yundong Hao, Qiaoqiao Xu, Qingbo Wang, Jiangyong He, Xiaosheng Xiao, Zhi Wang, Yange Liu
Summary: In this study, we theoretically investigate the dynamics of quartic solitons in fiber resonators with quartic dispersion and Kerr nonlinearity. The energy-duration scaling relationship is demonstrated in the negative quartic dispersion regime. In the positive quartic dispersion regime, dissipation-induced quartic soliton formation and remarkable pulse energy increase are achieved. Additionally, pattern formation dynamics in the quartic dispersion driving fiber resonators are explored.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Lili Gui, Chuanshuo Wang, Fei Ding, Hao Chen, Xiaosheng Xiao, Sergey I. Bozhevolnyi, Xiaoguang Zhang, Kun Xu
Summary: In this study, a wavelength-tunable vortex fiber laser assisted by a metasurface is proposed and demonstrated. The laser can directly generate orbital angular momentum (OAM) beams with customizable topological charges. By combining a broadband gap-surface plasmon metasurface and an intracavity tunable filter, the laser's center wavelength can be continuously tuned from 1015 nm to 1075 nm, which is nearly twice the range of other reported vortex fiber lasers.
Article
Multidisciplinary Sciences
Bingqian Zhou, Kuikui Fan, Jingjing Guo, Jiesi Feng, Changxi Yang, Yulong Li, Songhai Shi, Lingjie Kong
Summary: In vivo detection of neurochemicals is crucial for understanding brain mechanisms and diagnosing brain diseases. However, current sensors lack high specificity for real-time monitoring. In this study, fiber-optic probes based on engineered cells (FOPECs) were developed for plug-and-play, real-time detection of neurochemicals in freely moving animals. FOPECs demonstrated unprecedented chemical specificity and could be widely used in vertebrates without viral infection. They also showed potential for monitoring drug metabolisms in vivo.
Article
Optics
Weiqin Guo, Ling Zhang, Xiaosheng Xiao, Xingxing Li, Zhigang Yin, Hui Ning, Xin Zhang, Xingwang Zhang
Summary: The saturable absorber of niobium diselenide (NbSe2) prepared using liquid-phase exfoliation exhibits a wide working bandwidth and excellent nonlinear optical response. Its saturation intensity and modulation depth are 5.35 MW/cm(2) and 6.3%, respectively. Stable mode-locking of an erbium-doped fiber laser based on a NbSe2 saturable absorber is achieved, with a center wavelength of 1558.7 nm. The maximum average output power of the mode-locked laser is 6.93 mW, with a pulse width of 1.3 ps and a repetition rate of 25.31 MHz at a pump power of 550 mW. NbSe2 shows great potential as a photoelectric modulation material due to its excellent nonlinear optical properties.
Article
Chemistry, Multidisciplinary
Yutong Ran, Runni Zhao, Chen Meng, Nianze Shang, Shuo Sun, Kaihui Liu, Hongwei Zhu
Summary: This study explores the growth of multilayered SnSe2 nanoplates under non-steady-state conditions, revealing their distinct features and pronounced second harmonic generation. The findings shed light on the growth dynamics of 2D materials and broaden their potential applications in various fields.
Article
Chemistry, Multidisciplinary
Abdelrahman Brakat, Hongwei Zhu
Summary: The role of low-dimensional van der Waals heterointerfaces, particularly those incorporating quasi-2D graphene and quasi-1D nanocellulose derivatives, has attracted significant scientific interest due to their potential in fabricating distinct nanoarchitectures governed by vdW forces. However, the abilities of these nanoscale entities are limited by in-plane covalent bonding and the existence of dangling π-bonds, hindering emergent behavior at heterointerfaces.
Article
Computer Science, Information Systems
Dong Wan, Linan Shan, Lixia Xi, Zhenyu Xiao, Yang'an Zhang, Xueguang Yuan, Xiaosheng Xiao, Hu Zhang, Xiaoguang Zhang
Summary: In this study, a half-peak fitting algorithm is proposed to measure the Brillouin frequency shift(BFS) with high accuracy and stability. It can precisely determine the double-peak spectrum and detect the position in the transition section of a temperature change or strain event. The algorithm reduces calculation complexity, enhances measurement speed, and improves temperature measurement accuracy by about 1 fold with about 20% calculation of the full fitting.
Article
Chemistry, Physical
Liangzheng Dong, Shengye Tao, Ming Zhao, Daming Zhuang, Yafei Wang, Hanpeng Wang, Mengyao Jia, Junsu Han, Hongwei Zhu
Summary: Alkali metal doping in Cu2ZnSn(S,Se)(4) (CZTSSe) thin film solar cells has been found to promote the crystallization process and improve the electrical properties of the grain boundaries and heterojunction band alignments. The K-doped CZTSSe solar cells exhibit better device performance and fewer defects.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Meirong Huang, Sutong Wang, Hongwei Zhu
Summary: In this study, a comprehensive machine learning process was introduced to guide the selection of cocatalysts for BiVO4 photoanodes. The models trained using neural network and ensemble techniques were able to capture intricate relationships among photoanodes, cocatalysts, and electrolytes, and accurately predict unstudied cases. The feature importance analysis revealed that the type and preparation method of cocatalysts were the most significant factors affecting the catalytic system's performance. The interpretability of the models provided heuristic rules for selecting promising cocatalysts for BiVO4 photoanodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Yujia Zhong, Haoyu Fang, Yutong Ran, Hongwei Zhu
Summary: This study investigates the application of the 2D position-sensitive PTE effect based on the photothermoelectric effect in constructing a self-powered flexible optical writing device. The optically written characters are recognized with high accuracy and fast processing speed using a deep convolutional neural network, indicating its significant application potential.
Proceedings Paper
Optics
Lili Kong, Jiayu Lu, Xiaosheng Xiao
Summary: A general theoretical model is proposed in this paper to investigate the abundant high-dimensional nonlinear dynamics of multimode fiber lasers. Based on this model, the influences of cavity parameters on the 3D soliton dynamics of multimode fiber cavities are demonstrated.
ADVANCED LASERS, HIGH-POWER LASERS, AND APPLICATIONS XIII
(2022)
