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
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
Materials Science, Multidisciplinary
Jie Chen, Yuqing Guo, Xiaoyu Wang, Wanfeng Xiang, Hairu Ren, Jinkai Yan
Summary: By using the emerging time-stretched dispersive Fourier transform (TS-DFT) technique, we have observed multiple transient processes in fiber lasers, including pulse beating dynamics, pulse annihilation, transient bound states, two-soliton resonance state, pulse splitting, and multi-soliton repulsion dynamics. These findings reveal the complex transition processes in fiber lasers and provide new ways to generate and control high repetition-rate ultrashort pulses.
RESULTS IN PHYSICS
(2023)
Article
Optics
Jiaqiang Lin, Zhipeng Dong, Tianhao Dong, Xuexiao Ma, Chuansheng Dai, Peijun Yao, Chun Gu, Lixin Xu
Summary: In this study, an all-fiber bidirectional mode-locked laser based on nonlinear multimode interference is reported. It can generate asynchronous pulse trains in different directions and operate in different states. This work provides a new platform for studying the dynamic characteristics of bidirectional mode-locked lasers.
OPTICS AND LASER TECHNOLOGY
(2022)
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
Optics
Shaokang Bai, Yaqiong Lu, Zuxing Zhang
Summary: In this paper, a method combining FM-FBG and AOMC is proposed to achieve narrow linewidth mode-locked pulse output with adjustable transverse mode and wavelength in a fiber laser. The results of experiments show that by adjusting the acoustic frequency in AOMC, the wavelength of mode-locked pulses can be switched and mode conversion can be achieved. This laser may find applications in mode-division multiplexing systems.
CHINESE OPTICS LETTERS
(2022)
Article
Optics
Junsong Peng, Zihan Zhao, Sonia Boscolo, Christophe Finot, Srikanth Sugavanam, Dmitry Churkin, Heping Zeng
Summary: This study observed different types of breather complexes in a mode-locked fiber laser, with intermolecular temporal separation reaching several hundreds of picoseconds, indicating long-range interactions. This opens the possibility of studying the dynamics of many-body systems where breathers are the elementary constituents.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Jinhwa Gene, Dong-Il Yeom, Seung Kwan Kim, Sun Do Lim
Summary: The study introduces a high-energy, low-frequency 2-micron femtosecond fiber laser designed for laser surgery and vehicle laser detection and ranging applications. The laser, incorporating thulium-doped fiber gains and hybrid mode-locking techniques, achieved the highest pulse energy and lowest pulse rate reported to date, with pulse duration and output optical spectrum characteristics also evaluated for stability over extended periods.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Qiujun Ruan, Xiaosheng Xiao, Jinhai Zou, Hang Wang, Shuzheng Fan, Tianran Li, Jin Li, Zhipeng Dong, Zhiping Cai, Zhengqian Luo
Summary: This paper reports a fiber laser capable of spatiotemporal mode-locking (STML) at visible wavelengths, demonstrating its stability and narrow pulse duration through theoretical prediction and experimental realization. The locking of transverse and longitudinal modes is also illustrated, and the power is further boosted by establishing an ultrafast fiber amplifier.
LASER & PHOTONICS REVIEWS
(2022)
Article
Engineering, Electrical & Electronic
Renlai Zhou, Xuanyi Liu, M. S. Aruna Gandhi, Guanyu Liu, H. Y. Fu, Zhigang Zhang, Qian Li
Summary: The experimental observation of soliton molecules in a robust all polarization-maintaining (PM) mode-locked fiber laser with a nonreciprocal phase bias has been reported for the first time, resulting in a low self-starting threshold and stable mode locking. By elaborately tuning waveplates in the cavity, versatile soliton molecules are achieved and manipulated at different pump powers. Theoretical investigations show good concurrence with achieved experimental results regarding the spectral characteristics of soliton molecules with various phase differences and time separations in the cavity.
IEEE PHOTONICS JOURNAL
(2021)
Review
Optics
Kuen Yao Lau, Xiaofeng Liu, Jianrong Qiu
Summary: MXenes are a new class of two-dimensional materials with huge potential in photonics, electronics, and energy fields. Recent studies have shown that MXenes can replace traditional saturable absorbers, exhibiting high saturable absorption, flexible modulation ability, and high electron density. This review summarizes the synthesis and characterization of MXene, focusing on its nonlinear saturable absorption and its application as a saturable absorber in mode-locked fiber lasers.
LASER & PHOTONICS REVIEWS
(2022)
Article
Engineering, Electrical & Electronic
Emmanuel Kengne, Ahmed Lakhssassi
Summary: This paper considers a cubic-quintic complex Ginzburg-Landau equation that describes the dynamics of the field in passively mode-locked lasers. Analytically, it is shown that the competing cubic-quintic nonlinearity induces propagating dissipative chirp-free solitonlike dark/bright solitons and double-kink solitons in the presence of spectral filtering. In the absence of spectral filtering, the phase-engineering technique is employed to investigate the dynamics of chirped femtosecond dissipative solitons in passively mode-locked lasers.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
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
Materials Science, Multidisciplinary
Yi Zhou, Yu-Xuan Ren, Jiawei Shi, Kenneth K. Y. Wong
Summary: This paper reveals the transient switching dynamics of breathing soliton molecules (BSMs) in a bidirectional ultrafast fiber laser and demonstrates the all-optical switching and multi-molecule switching. The research provides new insights into the ultrafast transient process of BSMs in various dissipative systems.
ADVANCED PHOTONICS RESEARCH
(2022)
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
Zhao Li, Qingyang Du, Chaopeng Wang, Jinhai Zou, Tuanjie Du, Kathleen A. Richardson, Zhiping Cai, Juejun Hu, Zhengqian Luo
Summary: This work presents the first experimental demonstration of an externally pumped on-chip ultrafast soliton laser source based on Raman soliton self-frequency shift. The source, using Ge28Sb12Se60 chalcogenide glass waveguides, achieves continuous wavelength tunability with high signal-to-noise ratios, significantly improving energy efficiency and demonstrating excellent spectral purity and stability. These results provide insights into soliton dynamics and critical device design guidelines, enabling a new class of broadly tunable, energy-efficient, compact, and potentially cost-effective on-chip ultrafast laser sources.
LASER & PHOTONICS REVIEWS
(2021)
Article
Nanoscience & Nanotechnology
Longtao Wang, Jiangtao Xu, Jiafeng Lu, Linping Teng, Zhengqian Luo, Fufei Pang, Xianglong Zeng
Summary: This paper presents two schemes of generating high-order modes (HOMs) from mode-locked fiber lasers (MLFLs) in the dissipative soliton resonance (DSR) regime, achieving watt-level HOM outputs. Different fiber gratings enable flexible mode conversion and demonstrate their robust capability of efficient mode manipulation in MLFLs.
Article
Engineering, Electrical & Electronic
Zhipeng Dong, Honggang Sun, Yimin Zhang, Jinhai Zou, Lixin Xu, Zhengqian Luo
Summary: In this study, a visible-wavelength-tunable vortex-beam fiber laser is demonstrated for the first time, utilizing a Sagnac-loop fiber filter and efficient long-period fiber grating. The laser achieves high mode purity in generating vortex beams, with a wavelength range of 633.89 to 636.02 nm, and a reduction in speckle contrast of 17.13% using cylindrical vector beams (CVBs). This work provides an effective approach for developing compact, wavelength-tunable vortex fiber lasers in the visible spectrum with potential applications in various fields.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Teng Zhang, Wanxin Zheng, Kai Feng, Dong Wang, Bin Xu, Zhengqian Luo, Zhenfang Yu, Xudong Cui, Mauro Luciano Baesso, Tomaz Catunda
Summary: This study demonstrates high-power continuous-wave ultraviolet laser generation through intracavity frequency doubling, and replaces the use of He-Cd vapor laser with solid-state 320 nm ultraviolet laser in various applications.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Jinhai Zou, Jin Li, Tianran Li, Yizhong Huang, Qiujun Ruan, Yanbo Dou, Zhengqian Luo
Summary: This study demonstrates for the first time a compact tunable continuous-wave (CW) deep ultraviolet (DUV) laser source. By directly intracavity frequency doubling visible fiber lasers, efficient DUV laser emission with a wide wavelength tuning range and narrow linewidth is achieved. The developed DUV laser source has high power and efficiency, providing new possibilities for DUV laser applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Honggang Sun, Lixin Wang, Jinhai Zou, Qiujun Ruan, Yu Ding, Chuchu Dong, Zhipeng Dong, Zhengqian Luo
Summary: We report the first visible-wavelength all-fiber passively mode-locked vortex laser, capable of delivering picosecond optical vortex pulses with adjustable pulse duration and narrow linewidth. This study also demonstrates the potential applications of this technology in particle trapping, optical tweezers, and high-resolution microscopy.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Qiujun Ruan, Xiaosheng Xiao, Jinhai Zou, Hang Wang, Shuzheng Fan, Tianran Li, Jin Li, Zhipeng Dong, Zhiping Cai, Zhengqian Luo
Summary: This paper reports a fiber laser capable of spatiotemporal mode-locking (STML) at visible wavelengths, demonstrating its stability and narrow pulse duration through theoretical prediction and experimental realization. The locking of transverse and longitudinal modes is also illustrated, and the power is further boosted by establishing an ultrafast fiber amplifier.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Zhao Li, Fengbo Han, Zhipeng Dong, Qingyang Du, Zhengqian Luo
Summary: In this article, we theoretically investigate the propagation dynamics of mid-IR Raman soliton in a Ge28Sb12Se60 chalcogenide glass waveguide. By carefully engineering the waveguide dispersion and nonlinear interaction, we propose a suspended chalcogenide glass waveguide device that allows an octave-tuning, from 1.96 μm to 3.98 μm, Raman soliton source. Our result provides a solution to continuously tunable on-chip mid-IR ultrafast laser sources.
Article
Optics
J. I. N. F. E. N. Hong, J. I. N. H. A. I. Zou, Y. U. S. H. U. Wang, Q. I. U. J. U. N. Ruan, T. I. N. G. T. I. N. G. Chen, Y. A. N. G. Cheng, Y. I. K. U. N. Bu, Z. H. E. N. G. Q. I. A. N. Luo
Summary: We present a compact continuous-wave all-fiber cyan laser, which achieves downconversion cyan lasing at 491.5 nm with a maximum output power of 97.5 mW, a slope efficiency of 23.7%, and a power fluctuation of less than 0.41%. This all-fiber cyan laser has great significance in expanding the color reproduction range of laser displays and has potential applications in fluorescence imaging, underwater communication, and detection.
Article
Optics
Hang Wang, Yadi Yang, Jinfen Hong, Xin Zhou, Qiujun Ruan, Zhipeng Dong, Mikhail Melkumov, Sergey Firstov, Alexey Lobanov, Zhengqian Luo
Summary: In this study, we demonstrate a dissipative soliton resonance (DSR) in a bismuth-doped phosphosilicate fiber (Bi-PSF) laser operating at dual-wave bands of 1.3/1.4 μm. By utilizing a homemade Raman fiber laser at 1239 nm as the pump source and a non-linear amplifying loop mirror for initiating mode-locking, stable DSR operation is achieved at the wavelengths of 1343 nm and 1406 nm with large spectral bandwidths. This work opens up opportunities for various applications, including all-spectral-band communications, bio-medical imaging, and terahertz difference frequency generation.
Article
Optics
Tianran Li, Ziyu Wang, Jinhai Zou, Jinfen Hong, Qiujun Ruan, Hang Wang, Zhipeng Dong, Zhengqian Luo
Summary: This study demonstrates, for the first time, the direct generation of millijoule-level green pulses from a fiber laser, overcoming the limitations of near-IR laser frequency conversion and providing a model for compact, high-efficiency, and high-energy visible fiber pulsed lasers.
PHOTONICS RESEARCH
(2023)
Article
Optics
Liquan Zhu, Zhipeng Dong, Jinhai Zou, Linxiao Deng, Ting Li, Yuantong Chen, Chun Gu, Lixin Xu, Zhengqian Luo
Summary: This study investigates the use of optical fiber lasers in display systems by integrating a Pr3+-doped green all-fiber laser into a laser projection display system. A 520 nm semiconductor green laser diode module was integrated as a control group for comparison. The color gamut and speckle performances were studied and compared. The experimental group showed slightly better performance in color gamut volume, and the speckle contrast rapidly decreased with increasing power. This study is the first to apply a fiber laser to a laser display system, providing insights for developing speckle-free or speckle-reduced laser display systems.
Article
Engineering, Electrical & Electronic
Zhipeng Dong, Hang Wang, Wencheng Jia, Jinhai Zou, Zhengqian Luo
Summary: In this study, a 488 nm blue picosecond pulse was generated by frequency doubling a homemade 977 nm picosecond fiber laser. The original laser had a 977.84 nm central wavelength, 0.13 nm spectral width, 12.94 ps pulse duration, 76.09 MHz repetition rate, and 5.12 mW average power. After scaling up the power to 2.06 W, the pulse duration and spectral width slightly increased to 16.84 ps and 0.24 nm, respectively. The blue picosecond laser achieved a central wavelength of 488.92 nm and a linewidth of 0.17 nm. This compact and high-power laser has potential applications in high-resolution imaging, underwater detection, and material processing.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Hang Wang, Ziyu Wang, Wencheng Jia, Luming Song, Tingting Chen, Jinhai Zou, Zhipeng Dong, Zhengqian Luo
Summary: A 978 nm ultrafast fiber laser was demonstrated with a robust all-polarization-maintaining mode-locking using a phase-biased nonlinear amplifying loop mirror. It achieved a stable self-starting mode-locking with an average output power of 2.12 W. The laser was further amplified and used for second harmonic generation, producing a 489 nm ultrashort laser.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Optics
Hang Wang, Wencheng Jia, Yongjia Yao, Xinyun Yang, Mikhail Melkumov, Sergey Firstov, Alexey Lobanov, Zhipeng Dong, Zhengqian Luo
Summary: In this study, a 1.3/1.4μm random fiber laser (RFL) was successfully generated using bismuth-doped phosphosilicate fiber. The RFL showed excellent long-term operational stability and a wide emission spectrum. Compared to traditional laser sources, the RFL reduced the speckle contrast of images.
CHINESE OPTICS LETTERS
(2023)