Article
Optics
Wanru Zhang, Siyu Chen, Rongtao Su, Man Jiang, Can Li, Yanxing Ma, Pu Zhou
Summary: We present a single-frequency linearly-polarized gain-switched distributed feedback pulsed fiber laser, which achieves single-frequency and linearly-polarized laser pulses through parameter optimization of a phase shifted fiber Bragg grating. The optimized laser exhibits excellent performance with a narrow linewidth, high peak power, and a flexible repetition rate.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Lingfa Zeng, Zhiyong Pan, Xiaoming Xi, Huan Yang, Yun Ye, Liangjin Huang, Hanwei Zhang, Xiaolin Wang, Zefeng Wang, Pu Zhou, Xiaojun Xu, Jinbao Chen
Summary: In this study, a 5 kW high-power fiber amplifier using a homemade spindle-shaped ytterbium-doped fiber (YDF) was demonstrated, achieving high output power and beam quality under a bidirectional pump scheme. The mitigation of transverse mode instability and stimulated Raman scattering effects at maximum power opens up possibilities for further power scaling by optimizing the fiber structure. This work represents the highest power demonstration in a continuous-wave fiber laser employing a tapered fiber.
Article
Optics
Jiali Zhang, Jie Cao, Qun Hao, Yang Cheng, Liquan Dong, KaiXin Xiong, Bin Han, XueSheng Liu
Summary: A novel method based on autocorrelation characteristics was proposed to effectively deal with phase noise in pulsed laser coherent combination, achieving successful phase compensation and coherent combination of pulsed beams. The self-designed adaptive window filtering algorithm showed promising applications in the field of coherent combined systems.
Article
Optics
Yun Ye, Xianfeng Lin, Baolai Yang, Xiaoming Xi, Chen Shi, Hanwei Zhang, Xiaolin Wang, Jinyan Li, Xiaojun Xu
Summary: In this Letter, a monolithic high-power master oscillator power amplifier using a home-made double-clad tapered Yb-doped fiber (T-YDF) is demonstrated. The device achieves an output power of over 4 kW with a high slope efficiency of 84.1% and excellent beam quality (M-2 similar to 1.46). Experimental results also reveal the superior performance of the co-pump scheme compared to the counter-pump scheme. This work indicates the great potential of the T-YDF for further power scaling, high laser efficiency, and excellent beam quality in high-power fiber lasers.
Article
Engineering, Electrical & Electronic
Mohammad Abtahi, Reza Soltanian, Pin Long, Qammar Goher, Francois Legare
Summary: This paper presents an ultra-wide and high-power consecutive tunable mode-locked all-fiber laser source that covers the spectral range from 1020 to 1090nm, with pulse-width varying from 60 to 122ps. A power of about 2.5W was achieved at 1040nm with a high side mode suppression ratio and signal-to-noise ratio.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Siyuan Fang, Zhitao Zhang, Changsheng Yang, Wei Lin, Xu Cen, Qilai Zhao, Zhouming Feng, Zhongming Yang, Shanhui Xu
Summary: This study demonstrates a gain-switched single-frequency fiber laser based on Tm3+-doped fiber operating at 1950 nm. The laser output can be flexibly tuned by varying the modulation frequency of the pump source, and it maintains stable single-longitudinal-mode status throughout the experiment.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Computer Science, Information Systems
Shang-En Hsieh, Ching-Hsuan Hsu, Chien-Hung Yeh, Syu-Yang Jiang, Yu-Ting Lai, Chi-Wai Chow, Shien-Kuei Liaw
Summary: This presentation demonstrates an erbium-doped fiber laser with a compound-ring structure that achieves output performances of narrow linewidth, stable single-longitudinal-mode, and high optical signal to noise ratio in the L-band bandwidth. The Vernier effect in the compound-ring design effectively mitigates multi-longitudinal-mode noises, and the relative optical output features of the fiber laser are experimentally performed.
Article
Physics, Multidisciplinary
Zhang Wan-Ru, Chen Si-Yu, Su Rong-Tao, Jiang Man, Li Can, Ma Yan-Xing, Zhou Pu
Summary: This paper reports on the development of a linearly polarized single-frequency pulsed fiber laser, which achieves high-quality single-frequency pulse laser output through the use of a specific structure and optimization.
ACTA PHYSICA SINICA
(2022)
Article
Optics
Sergey Tsvetkov, Alexey Lobanov, Denis Lipatov, Maxim Khudyakov, Tatiana Zaushitsyna, Liudmila Iskhakova, Leonid Kotov, Mikhail Likhachev
Summary: A new design of passive optical fiber waveguide for large mode area (LMA) and strong stimulated Brillouin scattering (SBS) suppression is proposed. It consists of a fiber core with two parts, central part doped with Al2O3 and GeO2, and peripheral part doped with P2O5 and F. The doping profiles form a gradient-increasing profile of the acoustic refractive index, effectively implementing the acoustic multimode SBS suppression method.
Article
Optics
Benjamin Pulford, Roger Holten, Turghun Matniyaz, Monica T. Kalichevsky-Dong, Thomas W. Hawkins, Liang Dong
Summary: The further scaling of narrow-linewidth fiber lasers for beam combining is critical. By using all-solid photonic bandgap fibers with large effective mode areas and strong higher-order mode suppression, researchers have achieved the highest output power from a photonic bandgap fiber to date, while broadening the spectral linewidth to suppress stimulated Brillouin scattering.
Article
Optics
H. Ahmad, B. Nizamani, A. D. Azam, M. Z. Samion, M. Yasin, S. Sun
Summary: In this study, a mode-locked fiber laser operating in the O-band region was demonstrated using nickel phosphorus trisulfide (NiPS3) as a saturable absorber (SA) for the first time. An arc-shaped fiber coated with NiPS3 was integrated into a praseodymium (Pr3+)-doped fluoride fiber laser (PDFFL) cavity for signal emission at 1.3 μm. The mode-locked laser generated ultrashort pulses of 370 fs with a pulse energy of 17.1 nJ and a peak power of 46.2 kW, showing the potential of NiPS3-SA for mode-locked pulse generation at 1.3 μm.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Penglin Zhong, Li Wang, Baolai Yang, Hanwei Zhang, Xiaoming Xi, Peng Wang, Xiaolin Wang
Summary: A novel high-power linear cavity fiber laser capable of bidirectional high-power output is proposed and demonstrated, verifying the feasibility of a bidirectional output fiber laser that can achieve double high power. This has the potential to reduce cost and structure size.
Article
Physics, Multidisciplinary
Ding Xin-Yi, Wang Li, Zeng Ling-Fa, Wu Han-Shuo, Wang Xiao-Lin, Ning Yu, Xi Feng-Jie
Summary: This study proposes a double-ended output quasi-continuous wave (QCW) fiber laser model for high power and high beam quality output. The model considers stimulated Raman scattering (SRS) and amplified spontaneous emission (ASE), and the simulation results show that prolonging the rise time of the pump can effectively suppress relaxation oscillation and obtain a stable pulse output. The double-ended output structure changes the energy distribution in the fiber and inhibits SRS, achieving a peak power of 3 kW with good beam quality.
ACTA PHYSICA SINICA
(2023)
Article
Engineering, Electrical & Electronic
Jiaqi Zhou, Weiao Qi, Xin Zeng, Xin Cheng, Huawei Jiang, Shuzhen Cui, Yan Feng
Summary: In this paper, a simple, compact, and reliable thulium-doped fiber laser based on figure-of-9 mode-locking is reported. The laser generates stable ultrafast pulses, suitable for generating mid-infrared frequency combs.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Nannan Xu, Xinxin Shang, Shuo Sun, Fuhao Yang, Weiyu Fan, Huanian Zhang, Dengwang Li
Summary: This study successfully demonstrates a 15.1 mW low-threshold mode-locked fiber laser based on a Cr2Si2Te6 saturable absorber prepared by the liquid-phase exfoliation method. It provides a useful and economical method for producing saturable absorbers with low insertion loss and low saturation intensity. The experimental results also show the potential of Cr2Si2Te6 as an optical modulator in exploring soliton dynamics, harmonic mode locking, and other nonlinear effects in fiber lasers.
