A high average power single-stage picosecond double-clad fiber amplifier

Sun, Wei; Yu, Hai; Zhang, L; Yan, Shuo; Dong, Zhiyong; Han, Z H; Hou, Weizhen; Li, J M; Lin, Xingwen

doi:10.1088/1054-660x/23/9/095101

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…High energy and high peak power femtosecond pulses have numerous practically important applications [3]. In addition to the well-known applications of femtosecond lasers in areas such as nonlinear optics, metrology, and spectroscopy, the femtosecond lasers can also be an advanced tool for material processing or imaging [4,5].…”

Section: Introductionmentioning

confidence: 99%

Research on ytterbium-doped photonic crystal fiber amplifier for the femtosecond fiber laser

et al. 2015

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We report on a single-stage, high-repetition photonic crystal fiber amplifier working at 1030 nm seeded by a femtosecond fiber laser, which generates an output with average power of 2.23 W at a repetition rate of 49.5 MHz and a 3 dB spectral width of 5 nm, corresponding to a pulse energy of 45.2 nJ. After amplification, the spectrum of the femtosecond laser is broadened. A home-made, ytterbium-doped, double-clad photonic crystal fiber fabricated by laser sintering technology combined with a solution doping method with a core diameter of only 24 μm is used as the power amplifier medium. The spectral characteristics as well as the suppression of amplified spontaneous emission are discussed in detail. Experiment confirms that the amplified spontaneous emission becomes negligible with increasing incident seed power and no obvious nonlinear effects arise in this experiment. These results can provide motivation for the application of ytterbium-doped photonic crystal fiber and can provide a potential application for the high-power, all-fiber laser in the future.

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Section: Introductionmentioning

confidence: 99%

Research on ytterbium-doped photonic crystal fiber amplifier for the femtosecond fiber laser

et al. 2015

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Section: Introductionmentioning

confidence: 99%

“…Double-clad rare-earth doped fiber structures were developed in order to overcome the limitations in the output power level imposed by the difficulty of pumping the doped core of single mode fiber structures [1][2][3]. After reaching significant power levels, in the level of tens of watts [1][2][3], nonlinear effects start to play a significant role. Since the strength of the nonlinear effects depends inversely on the doped core area, additional scaling of the output power level required the design of large mode area (LMA) structures [4], which increases the threshold for the stimulated Raman scattering, for example, and allows increasing of the dopant concentration.…”

Section: Introductionmentioning

confidence: 99%

Self-pulsing in a large mode area, end-pumped, double-clad ytterbium-doped fiber laser

et al. 2014

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The characteristics of self-pulsing in a large mode area, end-pumped, double-clad Yb-doped fiber laser are presented. The laser operates in a self-pulsing regime, either by using one or two perpendicularly cleaved ends as the feedback mirrors, while it transforms in a broadband amplified spontaneous emission source when both ends are angle cleaved. In the pulsed regime, up to 2 µs full width at half maximum pulse widths and repetition rates of the order of hundreds of kHz are generated.

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“…In our earlier work, Sun et al achieved 38.8 W average power output through a single-stage 2 m 30∕250 μm Ybdoped fiber (YDF) amplifier with 80 MHz repetition and 35 ps pulse width. 7 In 2015, we also utilized this scheme to achieve 85 W burst mode picosecond pulses based on a Q-switched and mode-locked laser with output energy of 0.5 mJ per burst pulse. 8 Thus, the picosecond-pulse fiber amplifier based on the CWML solid-state laser can be a highly efficient and appropriate candidate for delivering high average power, high peak power, narrow-linewidth picosecond pulses.…”

mentioning

confidence: 99%

Generation of 130 W narrow-linewidth high-peak-power picosecond pulses directly from a compact Yb-doped single-stage fiber amplifier

Zhang

et al. 2015

Opt. Eng

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Abstract. We report a compact, 130-W single-stage master oscillator power amplifier with a high peak power of 51.3 kW and a narrow spectral linewidth of 0.1 nm. The seed source is a single-mode, passively mode-locked solid-state laser at 1064 nm with an average power of 2 W. At a repetition rate of 73.5 MHz, the pulse duration is 30 ps. After amplification, it stretches to 34.5 ps. The experiment enables the optical-to-optical conversion efficiency to reach 75%. To the best of our knowledge, this is the first report of such a high-power, narrow spectral linewidth, high peak power picosecond-pulse fiber amplifier based on a continuous-wave, mode-locked solidstate seeding laser. No amplified spontaneous emission and stimulated Raman scattering were observed when the pump was increased. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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A high average power single-stage picosecond double-clad fiber amplifier

Cited by 4 publications

References 17 publications

Research on ytterbium-doped photonic crystal fiber amplifier for the femtosecond fiber laser

Research on ytterbium-doped photonic crystal fiber amplifier for the femtosecond fiber laser

Self-pulsing in a large mode area, end-pumped, double-clad ytterbium-doped fiber laser

Generation of 130 W narrow-linewidth high-peak-power picosecond pulses directly from a compact Yb-doped single-stage fiber amplifier

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