Mr. Meng Wang Profile

Meng Wang

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Author

Publications (13)

Proceedings Article | 14 August 2024 Paper

Paper

Femtosecond laser inscription of FBGs in ytterbium-doped fiber based on fluorescence detection techniques

Xinyu Ye, Hao Li, Meng Wang, Chenhui Gao, Baiyi Wu, Rong Zhao, Zefeng Wang

Proceedings Volume 13248, 1324805 (2024) https://doi.org/10.1117/12.3032476

KEYWORDS: Femtosecond laser micromachining, Fiber Bragg gratings, Fluorescence, Fiber lasers, Cladding, Refractive index, Photoluminescence, Fluorescence spectroscopy

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Proceedings Article | 22 December 2023 Paper

Paper

2.3-μm single-frequency Tm: ZBLAN fiber amplifier

Yamei Xu, Xuanxi Li, Linyong Yang, Meng Wang, Zefeng Wang

Proceedings Volume 12974, 129740N (2023) https://doi.org/10.1117/12.3015459

KEYWORDS: Thulium, Fiber lasers, Fiber amplifiers, ZBLAN, Laser applications, Fiber coupled lasers, Defense technologies

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Proceedings Article | 22 December 2023 Paper

Paper

CO-filled hollow-core fiber lasers operating at 4.64-4.82 μm

Xuanxi Li, Linyong Yang, Yamei Xu, Zhiyue Zhou, Wei Huang, Meng Wang, Zefeng Wang

Proceedings Volume 12974, 129740G (2023) https://doi.org/10.1117/12.3015101

KEYWORDS: Fiber lasers, Carbon monoxide, Molecules, Absorption, Gas lasers, Vibration, Mid-IR

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Proceedings Article | 15 December 2022 Paper

Paper

1200 W monolithic all-fiber laser with fs-written fiber Bragg gratings and side-pumping coupler

Hao Li, Hongye Li, Zhixian Li, Xin Tian, Meng Wang, Binyu Rao, Baiyi Wu, Xiaoming Xi, Zhilun Chen, Zefeng Wang, Jinbao Wang

Proceedings Volume 12478, 124782L (2022) https://doi.org/10.1117/12.2654758

KEYWORDS: Fiber Bragg gratings, Optical pumping, Fiber lasers, Oscillators, Cladding, Femtosecond phenomena, Reflection, Laser applications, Reflectivity, Pulsed laser operation

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Proceedings Article | 29 March 2022 Paper

Paper

Theoretical analysis on the effect of seed Raman noise on the stimulated Raman scattering suppression of fiber amplifier

Chongwei Wang, Jianqiu Cao, Binyu Rao, Meng Wang, Zefeng Wang

Proceedings Volume 12169, 12169CZ (2022) https://doi.org/10.1117/12.2627406

KEYWORDS: Fiber amplifiers, Raman scattering, Signal to noise ratio, Fiber lasers, Ytterbium, High power fiber lasers, Amplifiers

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Proceedings Article | 27 March 2022 Paper

Paper

Study on fabrication of mid-infrared fiber Bragg gratings based on femtosecond laser

Chenhui Gao, Hongye Li, Baiyi Wu, Xiaofan Zhao, Meng Wang, Zefeng Wang

Proceedings Volume 12169, 12169D4 (2022) https://doi.org/10.1117/12.2627417

KEYWORDS: Fiber Bragg gratings, Mid-IR, Femtosecond phenomena, ZBLAN, Oscillators, Reflectivity, Fiber lasers, Laser applications, Laser systems engineering, Glasses

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Proceedings Article | 6 June 2021 Paper

Paper

Precise measurement for reflectivity of weak reflection FBG by Fabry Perot scale grating

Qiushi Qin, Meng Wang, Binyu Rao, Zefeng Wang

Proceedings Volume 11849, 118490Y (2021) https://doi.org/10.1117/12.2598965

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Proceedings Article | 6 June 2021 Paper

Paper

Weak reflectivity measurement of output-coupling FBG based on Fabry-Perot cavity inscribed by femtosecond laser

Qiushi Qin, Meng Wang, Binyu Rao, Zefeng Wang

Proceedings Volume 11849, 118490X (2021) https://doi.org/10.1117/12.2598963

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Proceedings Article | 6 June 2021 Paper

Paper

Mitigation of simulated Raman scattering in fiber laser oscillator using long period fiber grating

Qihao Hu, Xin Tian, Binyu Rao, Meng Wang, Zefeng Wang

Proceedings Volume 11849, 118490S (2021) https://doi.org/10.1117/12.2598910

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Proceedings Article | 6 June 2021 Paper

Paper

All-fiber Fabry-Perot cavity fabricated by fs laser line-by-line scanning technique

Luohao Lei, Hongye Li, Xiaofan Zhao, Binyu Rao, Meng Wang, Zefeng Wang

Proceedings Volume 11849, 118490P (2021) https://doi.org/10.1117/12.2598878

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Proceedings Article | 6 June 2021 Paper

Paper

Raman suppression in kW-level narrow-linewidth one-stage MOPA fiber laser by CTFBG

Xiaofan Zhao, Xin Tian, Meng Wang, Xiaoming Xi, Qiushi Qin, Zefeng Wang

Proceedings Volume 11849, 118490O (2021) https://doi.org/10.1117/12.2598771

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Proceedings Article | 6 June 2021 Paper

Paper

Demonstration of SRS filtering at the output of 2kW fiber laser by CTFBG

Xiaofan Zhao, Meng Wang, Xin Tian, Binyu Rao, Hongye Li, Zefeng Wang

Proceedings Volume 11849, 118490N (2021) https://doi.org/10.1117/12.2598770

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Proceedings Article | 13 May 2019 Presentation

Presentation

Mitigation of SRS in kilowatt-level diode-pumped fiber amplifiers with chirped and tilted fiber Bragg gratings (Conference Presentation)

Meng Wang, Zefeng Wang, Xiaoming Xi, Chen Shi, Wenguang Liu, Jinbao Chen

Proceedings Volume 11033, 110330S (2019) https://doi.org/10.1117/12.2522683

KEYWORDS: Fiber amplifiers, Fiber Bragg gratings, Optical filters, Fiber lasers, Manufacturing, Laser development, Raman scattering, Laser damage threshold, Environmental sensing, Temperature metrology

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The average power of diode-pumped fiber lasers have developed deep into the kW regime in the past years. However, stimulated Raman scattering (SRS) is still a major factor limiting the further power scaling. To date, many methods for SRS suppression have been proposed in fiber systems, such as the application of large-mode-area (LMA) fibers or enlarging the fiber mode area, spectrally selective fibers, or lumped spectral filters like long-period gratings (LPGs). The enlarging of fiber mode area must be combined with controlling numerical aperture (NA) for the operation of fundamental mode. Otherwise it will leads to a decreased transverse modal instability (TMI) threshold in fiber lasers, which also limits further power scaling. It is quite difficult to realize by today’s material and manufacturing technologies of fibers. The designing of spectrally selective fibers is usually very complex. Besides, it is also not easy to manufacture such fibers and it is still limited by the maximum fiber core size that can be employed. The working principle of lumped filters is similar to that of spectrally selective fibers, but it is much easier to design and fabricate such filters. LPGs have good filtering properties, but the filtering characters of LPGs is instable for their high sensitivities to the environment variable such as temperature, strain or humidity. Here, we have demonstrated the mitigation of SRS in kilowatt-level diode-pumped fiber amplifiers using a chirped and tilted fiber Bragg grating (CTFBG) for the first time. The CTFBG is designed and inscribed in LMA fibers, matching with the operating wavelength of the fiber amplifier. With the CTFBG being inserted between the seed laser and the amplifier stage, a SRS suppression ratio of ~10 dB is achieved in spectrum at the maximum output laser power of 2.35 kW, and there are no reduce in laser slope efficiency and degradation in beam quality. This work proves the feasibility and practicability of CTFBGs for SRS suppression in high-power fiber lasers, which is very useful for the further power scaling.

Showing 5 of 13 publications

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