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
Nanoscience & Nanotechnology
Xiaosheng Xiao, Yihang Ding, Shuzheng Fan, Xiaoguang Zhang, Changxi Yang
Summary: This study presents an observation and investigation of a novel high-dimensional nonlinear dynamics, termed spatiotemporal period-doubling bifurcation (SPB), in spatiotemporal mode-locked (STML) lasers. The SPB state exhibits period-doubling bifurcation in both temporal shape and spatial beam of the pulses, resulting in pulse train modulation and fluctuating output beam profile. Numerical simulations and a simple iterative model support the understanding that spatial-dependent saturable absorption is the key factor for the unique spatiotemporal characteristic of SPB in multimode lasers.
Article
Optics
Jiaqiang Lin, Zhipeng Dong, Tianhao Dong, Yiming Zhang, Chuansheng Dai, Peijun Yao, Chun Gu, Lixin Xu
Summary: A switchable single wavelength and dual-wavelength all-fiber ultrafast mode-locked laser was reported based on the nonlinear multimode interference effect of graded-index multimode fiber. By adjusting intra-cavity loss and polarization controllers, traditional switchable single wavelength and dual-wavelength mode-locking can be realized, along with the observation of a single wavelength harmonic soliton molecule mode-locking. This laser could be useful in measuring chemical reactions and has rarely been reported in literature.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
Zhenhao Wang, Shukai Zheng, Fanlong Dong, Jiachen Wang, Linpeng Yu, Xing Luo, Peiguang Yan, Jinzhang Wang, Qitao Lue, Chunyu Guo, Shuangchen Ruan
Summary: This study demonstrates the successful realization of a synchronously pumped mode-locked ytterbium-doped fiber laser and investigates the mechanism of this mode-locking technique. The laser exhibits high performance and environmental stability, providing a potential strategy for achieving high-performance ultrafast fiber sources in spectral regions without efficient modulators or saturable absorbers.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Optics
Xiuqi Wu, Junsong Peng, Sonia Boscolo, Ying Zhang, Christophe Finot, Heping Zeng
Summary: Generating pulse from an ultrafast laser is challenging task that involves adjusting multiple control parameters. Machine-learning tools have shown potential for designing smart lasers. The use of evolutionary algorithms for self-optimization of breather regime in fiber lasers opens up a new avenue for exploration and optimization of complex dynamics in nonlinear systems.
LASER & PHOTONICS REVIEWS
(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
Instruments & Instrumentation
Xingwei Li, Geng Li, Shuguang Li, Huijing Du, Jianshe Li, Ying Guo, Xiaojian Meng, Menglei Pei, Xingwang Cui, Chengjun Wang, Ling Qin, Meng Li
Summary: Passively mode locked fiber lasers exhibit various nonlinear effects, and in this experiment, we observed the evolution of soliton bunch to dissipates soliton resonance pulses by introducing nonlinear polarization rotation and a multimode fiber polarization controller. The important role of multimode fiber polarization controller in the evolution and generation of soliton pairs was demonstrated.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Mingwei Qiu, Mengmeng Chen, Zuxing Zhang
Summary: The spatiotemporal mode-locked multimode fiber laser achieves high pulse energy with near Gaussian output beam shape through spatial beam self-cleaning via the nonlinear Kerr effect. Single and multiple pulses with switchable central wavelengths can be obtained. The distinct thresholds observed in beam self-cleaning behavior at different wavelengths provide valuable insights for the dynamic characteristics of such lasers, making them more accessible for practical applications.
IEEE PHOTONICS TECHNOLOGY LETTERS
(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
Chemistry, Multidisciplinary
Shan Wang, Zhiguo Lv, Jintao Qiu
Summary: By introducing grating pairs for dispersion management, different dispersion regimes can be achieved, ranging from soliton state in the anomalous dispersion regime to dissipative soliton state in the normal dispersion regime. Tunable spectrum distribution can be realized by adjusting two intra-cavity polarization controllers. This dispersion management method complements NL-MMI mode-locking techniques and enables stable self-start mode locking, making it useful for practical applications.
Article
Optics
Yueqing Du, Chao Zeng, Zhiwen He, Qun Gao, Dong Mao
Summary: In this study, we revealed the coherent dissipative soliton intermittency in normal-dispersion fiber lasers based on real-time spectroscopy. By increasing the pump strength, the intermittency transforms from transient pulsation to bi-stable soliton, with the slow-gain effect dominating such coherent intermittency.
CHINESE OPTICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
N. K. Thipparapu, Shaiful Alam, Yu Wang, S. Pidishety, David J. Richardson, Jayanta K. Sahu
Summary: An all-fiber actively mode-locked Bismuth-doped fiber laser based on an acousto-optic modulator is proposed, which can achieve higher harmonic mode-locking and wavelength tuning. The laser has high output power and stability.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Chunyu Guo, Shupeng Lian, Shuangchen Ruan, Xiaogang Ge, Peiguang Yan, Jiachen Wang, Ping Hua, Qitao Lue
Summary: An experimental demonstration of a 1/1.5 mu m dual-band mode-locked fiber laser is presented. The laser utilizes a unique architecture where the 1 mu m and 1.5 mu m signals are generated independently in shared cavities, with mode-locking achieved through nonlinear polarization evolution and cross-phase modulation. Synchronized dual-band mode-locking operation is successfully achieved using the laser.
IEEE PHOTONICS JOURNAL
(2021)
