Article
Optics
Yulong Tang, Feng Li, Xuechao Yu
Summary: This study demonstrates a dual-wavelength harmonic mode-locked DSR ytterbium-doped fiber laser using a semiconductor saturable absorber mirror. By adjusting the feedback conditions, the laser can transition from fundamental frequency mode locking to harmonic mode locking with multiple orders. The unique features of DSR mode locking are maintained throughout the transition. This fiber laser has great potential for various applications.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Chenghao Liu, Mariusz Klimczak, Ryszard Buczynski, Xiahui Tang, Ming Tang, Haiyong Zhu, Luming Zhao
Summary: Experimental observation of mode-locked dissipative-soliton-resonance (DSR) pulses, including single-mode DSR pulses and multimode DSR pulses, in a Yb-doped fiber laser is reported. DSR pulses in single-mode state and multi-mode state can exist at the same time and can be output stably. The multi-mode DSR pulses exhibit same linearly broadening characteristics and bell-shaped spectral shape as single-mode DSR pulses. The results would be beneficial for expanding the knowledge of nonlinear dynamics to multimode fiber lasers and provide new insights for DSR pulse output with a fully multimode structure to get larger pulse energy.
OPTICS COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Xude Wang, Simin Yang, Mengqiu Sun, Xu Geng, Jieyu Pan, Shuguang Miao, Suwen Li
Summary: A Yb-doped fiber laser can generate multi-wavelength square pulses in the dissipative soliton resonance regime, with the pulse duration and pump power adjustable by controlling cavity parameters. The spectral filter effect of a passive fiber with low-stress birefringence facilitates multi-wavelength operation.
Article
Optics
Zhaokun Wang, Wendi Wu
Summary: The experimental investigation of harmonic dissipative soliton resonance (DSR) in an Yb-doped fiber laser operating in the large normal dispersion regime was conducted. The results showed the generation of square-shaped pulses at a fundamental frequency of 221 KHz, which could be split into their harmonic mode-locked counterparts by adjusting the PCs. The study also demonstrated the amplification of pulses up to 110 W output power in a two-stage all-fiber PM master oscillator power amplifier (MOPA) system, achieving a record pulse energy of 0.51 mJ at a frequency of 221 KHz.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Jiadong Wu, Zheng Lai, Yao Zhou, Yuhua Xie, Hualei Lei, Dongyang Liu, Ning Li, Chujun Zhao, Dianyuan Fan, Yu Chen
Summary: In this study, we experimentally demonstrated the generation of high energy 1.65 μm singular beams from a dissipative soliton resonance (DSR) all-fiber Raman laser. By taking advantage of the high nonlinearity and a home-made mode-selective coupler (MSC), different DSR pulsed singular beams, including cylindrical vector beam (CVB) and vortex beams (VB), were successfully generated. By optimizing the intra-cavity nonlinearity, the maximum pulse energy could be enhanced up to 698.19 nJ with a high signal to noise ratio of 80 dB. Our research may offer a new method to generate high energy pulsed singular beams with flexible operation wavelength.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Ankita Khanolkar, Yimin Zang, Andy Chong
Summary: The Complex Swift Hohenberg equation (CSHE) has attracted extensive research interest for realistic modeling of mode-locked lasers with saturable absorbers, with various numerical solutions revealing interesting pulse patterns and structures. Experimental demonstration of a CSHE dissipative soliton fiber laser using a unique spectral filter has shown qualitative agreement with numerical simulations, providing insights into dissipative soliton dynamics and potentially opening up new avenues for ultrafast fiber laser research.
PHOTONICS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Jing Li, Chuncan Wang, Peng Wang
Summary: In this experiment, fundamental and harmonic mode-locking in the dissipative soliton resonance (DSR) regime are investigated in a net-normal-dispersion Er/Yb co-doped fiber laser based on the semiconductor saturable mirror (SESAM). By increasing the pump power and utilizing the combined effects of spectral filtering and saturable absorption, harmonic mode-locking can be achieved. Additionally, the pulse characteristics can be altered by incorporating dispersion compensation fiber (DCF).
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Xinxing Liu, Wenhui Hao, Zhihui Yang, Yulong Tang
Summary: By adjusting the configuration of the laser, narrow pulses and high peak power can be achieved in random fiber lasers, and an over-one-octave visible-NIR Raman frequency comb is generated from single-mode silica fibers for the first time. This has potential applications in diverse areas such as spectroscopy, biomedical imaging, and quantum information.
HIGH POWER LASER SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Analytical
Xiaojun Zhu, Wen Liu, Yongquan Pan, Shuai Li, Guoan Zhang, Yancheng Ji, Li Zou, Zhipeng Liang, Juan Cao
Summary: A tunable dual-wavelength Yb-doped mode-locked fiber laser with two separated twin-pulse dissipative solitons (DSs) in the all-normal-dispersion (ANDi) regime is reported in this paper. By adjusting the polarization state of a Sagnac loop, the spectral ranges of the dual-wavelength can be tuned, while maintaining the pulse space between the twin-pulses. The twin-pulses can regress to a single-pulse as the pump power decreases.
Article
Optics
Yusheng Zhang, Ke Dai, Daru Chen
Summary: This paper demonstrates numerically and experimentally that the central wavelength of output pulses in an Er-doped mode-locked fiber laser can be switched by controlling the double-hump gain spectrum and third-order dispersion effect.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Fanchao Meng, Coraline Lapre, Cyril Billet, Thibaut Sylvestre, Jean-Marc Merolla, Christophe Finot, Sergei K. Turitsyn, Goery Genty, John M. Dudley
Summary: This study investigates the physical origin of noise-like pulse multiscale instabilities in dissipative laser systems through combined numerical and experimental approaches. They reveal a multiscale dynamics and report the observation of rogue wave events.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Ulises Alcantara-Bautista, Manuel Duran-Sanchez, Edwin Addiel Espinosa-De-La-Cruz, Ivan Armas-Rivera, Miguel Bello-Jimenez, Baldemar Ibarra-Escamilla
Summary: In this study, intracavity supercontinuum generation based on self-Q-switch assisted by stimulated Brillouin scattering is achieved from an all-fiber Ytterbium laser in the figure-9 configuration. The obtained supercontinuum extends from visible red light to beyond two microns with a flatness better than 5 dB in the range of 1256-2141 nm, spanning over an octave -856-2141 nm at -20 dB level excluding the main peak.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Zhuang Wang, Heping Li, Junwen Li, Wenxiong Du, Zhiyao Zhang, Shangjian Zhang, Yong Liu
Summary: We demonstrate the generation of pulsating vector dissipative-soliton-resonance (DSR) pulses in an ytterbium-doped fiber laser for the first time. By decreasing the pump power, the stationary DSR pulse can evolve into a pulsating one, with periodic variations in its width and energy. Unlike conventional pulsating behavior, the peak power of the pulsating DSR pulse remains unchanged due to the strong peak-power-clamping effect.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Zihao Zhao, Lei Jin, Sze Yun Set, Shinji Yamashita
Summary: In this experiment, we demonstrated a broadband similariton generated by compensating dispersion in a mode-locked Yb-doped fiber laser. By pushing the net dispersion to its limit and fully utilizing the gain bandwidth, the widest spectrum was achieved. The experimental observations agreed well with the numerical simulation. We believe our study provides a practical approach for designing broadband mode-locked fiber lasers.
Article
Optics
Tian-Xu Zhao, Guang-Xin Liu, Li-Long Dai, Bang Zhao, Hu Cui, Cheng-Bo Mou, Zhi-Chao Luo, Wen-Cheng Xu, Ai-Ping Luo
Summary: We report a narrow bandwidth spatiotemporal mode-locked ytterbium-doped fiber laser based on a homemade carbon nanotube/polyvinyl alcohol composite film and the multimode interference filtering effect. The laser achieves wavelength-tunable narrow bandwidth STML operations and numerical simulations are performed to study the pulse generation mechanism.
Article
Chemistry, Applied
Qiuming Wei, Wei Li, Chun Jin, Yasi Chen, Linlin Hou, Zhiliang Wu, Zhongliang Pan, Qinyu He, Yinzhen Wang, Dingyuan Tang
Summary: Photocatalytic technology has the potential to address environmental pollution issues, particularly antibiotic pollution. In this study, a novel La-doped MIL-53(Al)/ZnO composite material was synthesized and exhibited high photocatalytic degradation efficiency for sulfamethazine. The improved photocatalytic activity was attributed to the doping of La ions, which reduced the band gap of ZnO, enhanced light response, and effectively facilitated the separation of photo-generated holes and electrons.
JOURNAL OF RARE EARTHS
(2022)
Article
Optics
Zhe Yu, Zhichao Wu, Yutian Wang, Huan He, Jingwen Li, Chaoyu Xu, Tianye Huang, Deming Liu, Luming Zhao, Yuwen Qin, Songnian Fu
Summary: This study demonstrates the experimental classification of ultrafast optical pulses using Linear Optical Sampling (LOS), which overcomes the limitations of traditional Nonlinear Fourier Transform (NFT) techniques. The LOS technique provides an alternative and efficient tool for characterizing ultrafast fiber lasers, enabling comprehensive insight into soliton dynamics.
Article
Materials Science, Multidisciplinary
Tianzhong Li, Jinyong Wang, Tongkai Chen, Swelm Wageh, Ahmed A. Al-Ghamdi, Jiangtian Yu, Zhongjian Xie, Han Zhang
Summary: In this study, a drug formulation based on lactic acid bacteria (LAB) was developed to produce reactive oxygen species (ROS) in tumors and induce host immunity. The LAB were modified with zeolitic imidazolate framework-67 (ZIF-67) and effectively delivered into tumor cells, leading to the generation of ROS upon light exposure. The bacterial hybrid induced tumor shrinkage through photodynamic therapy and stimulated inflammation to attract immune cells for cancer elimination.
SCIENCE CHINA-MATERIALS
(2023)
Article
Optics
Fanglin Chen, Hengwen Lan, Yutian Wang, Mariusz Klimczak, Ryszard Buczynski, Xiahui Tang, Ming Tang, Haiyong Zhu, Luming Zhao
Summary: The phase evolution of soliton and first-order sidebands in a fiber laser was investigated using nonlinear Fourier transform (NFT). The study revealed a transition from dip-type sidebands to peak-type (Kelly) sidebands. The calculated phase relationship between the soliton and sidebands using NFT agreed well with the average soliton theory. These findings suggest that NFT can be an effective tool for analyzing laser pulses.
Article
Engineering, Chemical
Huixing Yang, Wei Li, Yangyang Jiang, Qiuming Wei, Linlin Hou, Zhiliang Wu, Qinyu He, Yinzhen Wang, Dingyuan Tang
Summary: The proper design of photocatalysts is crucial for improving the performance of photocatalytic decomposition of water and degradation of pollutants. In this study, a composite material CdS-DETA@g-C3N5 was synthesized by combining nitrogen-rich carbon nitride with CdS-DETA, which exhibited significantly higher hydrogen evolution rate and OFLX degradation rate compared to other catalysts. The enhancements in performance were attributed to the enhancement of energy band bending, construction of a built-in electric field, and retention of high redox carriers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Manman Ding, Xuanxi Li, Fei Wang, Jun Wang, Deyuan Shen, Dingyuan Tang, Heyuan Zhu
Summary: This paper reports on the single-longitudinal-mode and tunable operation of an Er:Y2O3 ceramic laser at around 2.7 μm using intracavity Fabry-Perot etalons combined with a birefringent filter. The laser is pumped with a high brightness, narrow linewidth diode source at around 980 nm and achieves a linearly polarized output power of over 240 mW at 2717 nm for an absorbed pump power of 5.1 W. The demonstrated wavelength tuning range spans from 2708.6 nm to 2741.2 nm, with output powers of over 220 mW throughout the tuning range.
IEEE PHOTONICS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Dapeng Huang, Fei Liang, Ruiqi Guo, Dazhi Lu, Jiyang Wang, Haohai Yu, Huaijin Zhang
Summary: In this study, the broadband self-trapped exciton (STE) states are demonstrated for the first time in Mo-vacancy-rich MoSi2N4 films. The modulation effect of STE states on nonlinear optical processes is verified, which opens up new possibilities for the construction of novel devices and practical applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Xiao Hu, Jun Guo, Jun Wang, Jie Ma, Luming Zhao, Seongwoo Yoo, Dingyuan Tang
Summary: This work reports the formation of novel soliton molecules (SMs) in a fiber laser with near-zero group velocity dispersion (ZGVD), involving the binding of bright and dark solitons. These stable bound states are formed due to the incoherent cross-phase modulation of light, resembling multi-atom molecules in chemistry. The research findings offer insights into the dynamics of large SM complexes and may have potential applications in large-capacity transmission and all-optical information storage.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Physics, Multidisciplinary
Yufan Du, Liao Chen, Zihui Lei, Chi Zhang, Luming Zhao, Xinliang Zhang
Summary: By collecting spectra from multiple ports and realizing synchronous real-time observation, we observed the sinusoidal evolution of spectral beating and the intracavitary spectral dynamics of period-doubling bifurcation. Our observations matched well with theoretical predictions and simulations. This work may enable real-time observation of various intracavitary nonlinear dynamics in photonic systems.
COMMUNICATIONS PHYSICS
(2023)
Article
Optics
Chenghao Liu, Mariusz Klimczak, Ryszard Buczynski, Xiahui Tang, Ming Tang, Haiyong Zhu, Luming Zhao
Summary: Experimental observation of mode-locked dissipative-soliton-resonance (DSR) pulses, including single-mode DSR pulses and multimode DSR pulses, in a Yb-doped fiber laser is reported. DSR pulses in single-mode state and multi-mode state can exist at the same time and can be output stably. The multi-mode DSR pulses exhibit same linearly broadening characteristics and bell-shaped spectral shape as single-mode DSR pulses. The results would be beneficial for expanding the knowledge of nonlinear dynamics to multimode fiber lasers and provide new insights for DSR pulse output with a fully multimode structure to get larger pulse energy.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Hengwen Lan, Fanglin Chen, Yutian Wang, Mariusz Klimczak, Ryszard Buczynski, Xiahui Tang, Ming Tang, Haiyong Zhu, Luming Zhao
Summary: We investigate the polarization dynamics of vector solitons in a fiber laser mode-locked by a saturable absorber. Three types of vector solitons were obtained in the laser: group velocity locked vector solitons, polarization locked vector solitons, and polarization rotation locked vector solitons. The polarization evolution during intracavity propagation is discussed. Numerical simulations suggest that the features of vector solitons in a fiber laser could be similar to those generated in fibers.
Article
Engineering, Electrical & Electronic
Jianxing Pan, Tianye Huang, Zhichao Wu, Yutian Wang, Chaoyu Xu, Jing Zhang, Luming Zhao
Summary: Kerr microresonators are attracting attention for their high integration, compatible fabrication, and low energy consumption; they can generate dissipative solitons called cavity solitons and even form ideal equidistant soliton crystal states.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Andrey Komarov, Alexander Dmitriev, Konstantin Komarov, Georges Semaan, Luming Zhao, Francois Sanchez
Summary: We numerically studied the formation of color pulses and domains in dual-wavelength fiber lasers in a noise-like regime. Each pulse and domain consists of two noise-radiation square fragments with different carrier frequencies. This noise radiation is caused by the Kerr nonlinearity of the fiber in the laser ring cavity. The spectral and temporal structures of the noise radiation have been determined. The obtained results are important for understanding the nonlinear dynamics of noise-like radiation and for developing methods to control laser regimes.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Yutian Wang, Chenxi Li, Fanglin Chen, Hengwen Lan, Songnian Fu, Mariusz Klimczak, Ryszard Buczynski, Xiahui Tang, Ming Tang, Luming Zhao
Summary: The study of soliton-based fiber optic communication and signal processing techniques has been hindered by hardware and digital signal processing limitations. However, the recent introduction of nonlinear Fourier transform (NFT) has provided a powerful mathematical framework for analyzing and understanding soliton behavior in optical fibers, leading to new developments in the field.
OPTICS COMMUNICATIONS
(2023)
