100 W dissipative soliton resonances from a thulium-doped double-clad all-fiber-format MOPA system

Zhao, Junqing; Ouyang, Deqin; Zhi-Jian, Zheng; Liu, Minqiu; Ren, Xinyi; Li, Chunbo; Ruan, Shuangchen; Xie, Weixin

doi:10.1364/oe.24.012072

Cited by 95 publications

(43 citation statements)

References 35 publications

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“…Thus, for too high an order of HML, the long trailing portion of the h-shaped pulses would fully occupy the pulse intervals, i.e., adjacent pulses would nearly overlap with each other. In the experimental aspect, however, the pulses would typically merge into a continuous wave operation rather than forming a pulse overlap state, like what we observed in our previous publication where the PDC could approach to 98.2% but its further increase would result in the transformation into a continuous wave state [34].…”

Section: B Ps-induced Switching Characteristicssupporting

confidence: 64%

“…Relying on wavebreaking-free properties attributed to peak-power-clamping (PPC) effect, DSR has recently been shown as a promising mode-locking regime that could scale the pulse energy to virtually unlimited levels, and, in fact, up to 10 μJ single pulse energy from a fiber laser oscillator was achieved by G. Semaan et al [33]. The detailed amplifying characteristics of DSR pulses at 2 μm band were investigated by J. Zhao et al, where over 94 μJ amplified pulse energy was obtained with up to ~18.4 kW peak power from a thulium-doped fiber (TDF) master oscillator power amplifier (MOPA) system [34]. However, despite the unparalleled scalability in single pulse energy, the HML was still observed in the DSR regime [28,29,35].…”

Section: Introductionmentioning

confidence: 99%

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Tunable and switchable harmonic h-shaped pulse generation in a 303 km ultralong mode-locked thulium-doped fiber laser

Zhao

et al. 2019

Photon. Res.

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We experimentally demonstrated a type of tunable and switchable harmonic h-shaped pulse generation in a thulium-doped fiber (TDF) laser passively mode-locked by using an ultra-long nonlinear optical loop mirror (NOLM). The total cavity length was ~3.03 km, the longest ever built for a TDF laser to our best knowledge, which resulted in an ultra-large anomalous dispersion over -200 ps 2 around the emission wavelength. The produced hshaped pulse could operate either in a fundamental or in a high-order harmonic mode-locking (HML) state depending on pump power and intra-cavity polarization state (PS). The pulse duration, no matter of the operation state, was tunable with pump power. However, pulse breaking and self-organizing occurred, resulting in high order HML, when the pump power increased above a threshold. At a fixed pump power, the order of HML was switchable from one to another by manipulating the PS. Switching from 8 th up to 48 th order of HML was achieved with a fixed pump power of ~4.15 W. Our results revealed the detailed evolution and switching characteristics of the HML and individual pulse envelope with respect to both the pump power and PS. We have also discussed in detail on the mechanisms of both the h-shaped pulse generation and the switching of its HML. This contribution would be helpful for further in-depth study on the underlain dynamics of long duration, particular-envelope pulses with ultra-large anomalous dispersion and ultra-long roundtrip time.

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Section: B Ps-induced Switching Characteristicssupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Tunable and switchable harmonic h-shaped pulse generation in a 303 km ultralong mode-locked thulium-doped fiber laser

Zhao

et al. 2019

Photon. Res.

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“…As can be seen from Fig. 7, a signal amplification leads to a broadening of its spectrum 17 . To calculate pulse energy correctly, we have determined percentage of spectral power in the signal band.…”

Section: Resultsmentioning

confidence: 86%

Picosecond Yb-doped tapered fiber laser system with 1.26 MW peak power and 200 W average output power

Petrov

Odnoblyudov

Gumenyuk

et al. 2020

Sci Rep

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We demonstrate a compact picosecond master-oscillator power-amplifier (MOPA) system based on an Yb-doped polarization-maintaining double-clad tapered fiber (T-DCF) delivering pulses with over 1.26 MW peak power and average output power up to 200 W preserving near diffraction limited beam quality. The unique properties of an active tapered fiber enable to amplify the seed pulses directly with no need for applying of additional stretching technique. This simplified laser system can find the practical implementation in industrial micromachining.

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“…Due to the low peak power, DSR pulses are perfect candidate for amplification. Amplified DSR pulses of tens of micro-Joules have been demonstrated [61]. DSR pulses can also be achieved in an all-polarization-maintaining fiber laser [62].…”

Section: Dissipative Soliton Generation In Fiber Lasersmentioning

confidence: 99%

Route to Larger Pulse Energy in Ultrafast Fiber Lasers

Zhao

et al. 2018

IEEE J. Select. Topics Quantum Electron.

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Principles of pulse shaping aiming larger pulse energy in fiber lasers are reviewed. From conventional solitons generated in anomalous dispersion regime, stretched pulses in dispersion-managed fiber lasers, similaritons in normal dispersion regime, dissipative solitons in large normal dispersion regime, amplifier similaritons in fiber lasers with narrow bandwidth filtering, to dissipative-soliton-resonance (DSR) pulses in fiber lasers, scaling of pulse energy from pico-Joule level to micro-Joule is successfully achieved. DSR is a possible way to achieve endless pulse energy, which is limited by the available pump power and material damage threshold. Properties of DSR pulses are reviewed. Specifically, we experimentally and numerically demonstrate tilt-top DSR pulses in a normal dispersion mode-locked fiber laser. Two fronts of the tilt-top pulses exhibit different intensity, and the intensity disparity maintains while the pulses extend with increasing gain. The tilt-top DSR pulses have rectangle spectral pedestal and a peak. The spectral peak deviates from the center of the rectangle spectral pedestal. Further results show that the asymmetry of two fronts is closely related to the wavelength deviation of spectral peak. Numerical simulations reveal the importance of the saddle-type spectral filtering on asymmetric DSR pulse generation.

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100 W dissipative soliton resonances from a thulium-doped double-clad all-fiber-format MOPA system

Cited by 95 publications

References 35 publications

Tunable and switchable harmonic h-shaped pulse generation in a 303 km ultralong mode-locked thulium-doped fiber laser

Tunable and switchable harmonic h-shaped pulse generation in a 303 km ultralong mode-locked thulium-doped fiber laser

Picosecond Yb-doped tapered fiber laser system with 1.26 MW peak power and 200 W average output power

Route to Larger Pulse Energy in Ultrafast Fiber Lasers

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