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Sha Li - One of the best experts on this subject based on the ideXlab platform.

  • Passively Q-Switched Yb-Doped All-Fiber Laser With a Black Phosphorus Saturable Absorber
    Journal of Lightwave Technology, 2018
    Co-Authors: Junli Wang, Yupeng Xing, Lei Chen, Sha Li
    Abstract:

    We report two kinds of Q-Switched Yb-doped fiber lasers based on a black phosphorus saturable absorber (BP-SA). The BP-SAs are prepared by two different methods, one of which is the mechanical exfoliation method and the other is the liquid-phase exfoliation method. The BP-SAs are inserted into the all-fiber Yb-doped oscillation cavity in different forms. We have experimentally shown that the passively Q-Switched Pulse trains could be obtained by the two methods. First, we achieve the Q-Switched Pulse in 1029.63 nm by using a few-layer black phosphorus sheet. The fiber laser was capable of generating Pulses with a maximum average output power of 13.12 mW and a repetition rate of 79.46 kHz, corresponding to the maximum single-Pulse energy of 165.11 nJ and the shortest single-Pulse width of 1.55 μs. In addition, we obtain narrower Pulsewidth by dropping the black phosphorus solution onto the tapered fiber. The maximum single Pulse energy of 114.72 nJ and the minimum Pulsewidth of 1.09 μs were obtained. The repetition rate ranges from 49.13 to 101.3 kHz.

  • Passively Q-Switched Ytterbium-doped fiber laser based on mechanically exfoliated black phosphorus
    2016 Conference on Lasers and Electro-Optics (CLEO), 2016
    Co-Authors: Sha Li, Junli Wang
    Abstract:

    Few-layer black phosphorus (BP) is a two-dimensional material. BP was fabricated by mechanical exfoliation method. We have experimentally shown that the Q-Switched Pulse was generated in Yb-doped fiber laser based on the BP staturable absorber.

Nasser Peyghambarian - One of the best experts on this subject based on the ideXlab platform.

  • SESAM Q-Switched Ho3+-Doped ZBLAN Fiber Laser at 1190 nm
    IEEE Photonics Technology Letters, 2017
    Co-Authors: Yuchen Wang, Kort Wiersma, Arturo Chavez-pirson, Chuanxiang Sheng, R. A. Norwood, Xiushan Zhu, Jie Zong, Qian Chen, Li Li, Nasser Peyghambarian
    Abstract:

    We report Q-Switched Pulse operation of holmium (Ho(3+))-doped ZrF(4)-BaF(2)-LaF(3)-AlF(3)-NaF (ZBLAN) at ∼1190 nm in an all-fiber ring laser by using a fiber-optic graphene saturable absorber, which was fabricated by depositing graphene onto the flat surface of a side-polished D-shaped fiber. Stable Q-Switched operation was established at a pump power of 180 mW with a repetition rate of 24 kHz and Pulse width of 5.7 μs. When the pump power was increased to 1125 mW, 0.44 μJ Q-Switched Pulses with a repetition rate of 111 kHz and a Pulse width of 0.8 μs were generated.

  • Graphene Q-Switched Ho(3+)-doped ZBLAN fiber laser at 1190 nm.
    Optics Letters, 2015
    Co-Authors: Kaushik Balakrishnan, Kort Wiersma, Arturo Chavez-pirson, Jie Zong, Robert A Norwood, Nasser Peyghambarian
    Abstract:

    We report Q-Switched Pulse operation of holmium (Ho3+)-doped ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) at ∼1190  nm in an all-fiber ring laser by using a fiber-optic graphene saturable absorber, which was fabricated by depositing graphene onto the flat surface of a side-polished D-shaped fiber. Stable Q-Switched operation was established at a pump power of 180 mW with a repetition rate of 24 kHz and Pulse width of 5.7 μs. When the pump power was increased to 1125 mW, 0.44 μJ Q-Switched Pulses with a repetition rate of 111 kHz and a Pulse width of 0.8 μs were generated.

  • Experimental and Numerical Investigations on 2.8 μm Q-Switched Pulse Amplification
    Frontiers in Optics, 2014
    Co-Authors: Robert A Norwood, Nasser Peyghambarian
    Abstract:

    An Er3+-doped ZBLAN fiber amplifier for Q-Switched Pulses at 2.79 μm is reported. Over 24 μJ Pulse energy at an average output power of 1.0 W was achieved at a pump power of 9.4 W.

Yasushi Fujimoto - One of the best experts on this subject based on the ideXlab platform.

  • Visible Q-Switched Pulse laser oscillation in Pr-doped double-clad structured waterproof fluoride glass fiber with graphene
    Optics Communications, 2018
    Co-Authors: Shota Kajikawa, M. Yoshida, Osamu Ishii, Masaaki Yamazaki, Yasushi Fujimoto
    Abstract:

    Abstract We successfully generated a visible Q-Switched Pulse train at 636 nm in a Pr-doped double-clad structured waterproof fluoride glass fiber with graphene as a saturable absorber (SA) and calculated the slope efficiency as 22.1%. The average radio frequency and the average Pulse width of all observed Pulses were respectively measured as 633 kHz and 185 ns. We also discussed the required intensity to generate Q-Switched operation in graphene using extrapolation and estimated the required intensity of Q-Switched oscillation with graphene from kW/cm2 to MW/cm2 depending on wavelength.

  • Visible Q-Switched Pulse generation in Pr-doped double-clad structured waterproof fluoro-aluminate glass fiber
    2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO Europe-EQEC), 2017
    Co-Authors: Shota Kajikawa, M. Yoshida, Osamu Ishii, Masaaki Yamazaki, T. Murakami, Yasushi Fujimoto
    Abstract:

    Summary form only given. Development on primary visible solid-state lasers (PVSSL) are very fascinating because the laser has many applications, for example, medicine, biology, and optical measurement systems. We have been developing a visible primary fiber laser with Pr-doped waterproof fluoro-aluminate glass fiber (Pr:WPFGF), and reported a single-mode laser performance in a double-clad structured Pr:WPFGF (Pr:DC-WPFGF) [1]. Recently, some reports on Pulse generation in Pr:YLF were published [2, 3], and therefore, it is considered that research of visible laser Pulse generation in Pr-doped materials has begun to be activated and another application on the PVSSL will be opened up. In this paper, we report a visible Q-Switched Pulse generation in Pr:DC-WPFGF.

  • Visible Q-Switched Pulse generation in Pr-doped double-clad structured waterproof fluoro-aluminate glass fiber
    2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO Europe-EQEC), 2017
    Co-Authors: Shota Kajikawa, M. Yoshida, Osamu Ishii, Masaaki Yamazaki, T. Murakami, Yasushi Fujimoto
    Abstract:

    Development on primary visible solid-state lasers (PVSSL) are very fascinating because the laser has many applications, for example, medicine, biology, and optical measurement systems. We have been developing a visible primary fiber laser with Pr-doped waterproof fluoro-aluminate glass fiber (Pr:WPFGF), and reported a single-mode laser performance in a double-clad structured Pr:WPFGF (Pr:DC-WPFGF) [1]. Recently, some reports on Pulse generation in Pr:YLF were published [2, 3], and therefore, it is considered that research of visible laser Pulse generation in Pr-doped materials has begun to be activated and another application on the PVSSL will be opened up. In this paper, we report a visible Q-Switched Pulse generation in Pr:DC-WPFGF.

  • Visible ns-Pulse laser oscillation in Pr-doped double-clad structured waterproof fluoride glass fibre with SESAM
    The Journal of Engineering, 2017
    Co-Authors: Shota Kajikawa, M. Yoshida, Osamu Ishii, Masaaki Yamazaki, Shinji Motokoshi, Yasushi Fujimoto
    Abstract:

    A visible Q-Switched Pulse train at 639 nm was successfully generated in a Pr-doped double-clad structured waterproof fluoride glass fibre with a semiconductor saturable absorber mirror. The slope efficiency was calculated as 36.3%. The Pulse duration and the radio frequency were measured as 270 ns and 107 kHz at 596 mW of absorbed power, respectively. The Pulse energy and the Pulse peak power were calculated as 1.32 μJ and 4.87 W, respectively.

Junli Wang - One of the best experts on this subject based on the ideXlab platform.

  • Passively Q-Switched Yb-Doped All-Fiber Laser With a Black Phosphorus Saturable Absorber
    Journal of Lightwave Technology, 2018
    Co-Authors: Junli Wang, Yupeng Xing, Lei Chen, Sha Li
    Abstract:

    We report two kinds of Q-Switched Yb-doped fiber lasers based on a black phosphorus saturable absorber (BP-SA). The BP-SAs are prepared by two different methods, one of which is the mechanical exfoliation method and the other is the liquid-phase exfoliation method. The BP-SAs are inserted into the all-fiber Yb-doped oscillation cavity in different forms. We have experimentally shown that the passively Q-Switched Pulse trains could be obtained by the two methods. First, we achieve the Q-Switched Pulse in 1029.63 nm by using a few-layer black phosphorus sheet. The fiber laser was capable of generating Pulses with a maximum average output power of 13.12 mW and a repetition rate of 79.46 kHz, corresponding to the maximum single-Pulse energy of 165.11 nJ and the shortest single-Pulse width of 1.55 μs. In addition, we obtain narrower Pulsewidth by dropping the black phosphorus solution onto the tapered fiber. The maximum single Pulse energy of 114.72 nJ and the minimum Pulsewidth of 1.09 μs were obtained. The repetition rate ranges from 49.13 to 101.3 kHz.

  • Passively Q-Switched Ytterbium-doped fiber laser based on mechanically exfoliated black phosphorus
    2016 Conference on Lasers and Electro-Optics (CLEO), 2016
    Co-Authors: Sha Li, Junli Wang
    Abstract:

    Few-layer black phosphorus (BP) is a two-dimensional material. BP was fabricated by mechanical exfoliation method. We have experimentally shown that the Q-Switched Pulse was generated in Yb-doped fiber laser based on the BP staturable absorber.

Shuangchun Wen - One of the best experts on this subject based on the ideXlab platform.