• Collection Of theses on high power laser and plasma physics
  • Vol. 5, Issue 1, 181 (2007)
[in Chinese]*, [in Chinese], [in Chinese], [in Chinese]..., [in Chinese], [in Chinese] and [in Chinese]|Show fewer author(s)
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    [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Fabrication of Yb-Doped Phase-Shifted Fiber Grating Laser[J]. Collection Of theses on high power laser and plasma physics, 2007, 5(1): 181 Copy Citation Text show less

    Abstract

    Yb-doped phase-shifted fiber Bragg grating (PS-FBG) has been fabricated with phase shift introduced by shielded method. In the fabrication process, the PS-FBG is used as the laser cavity. Whether the introduced phase-shift is π/2 or not is determined by the laser output power. As long as the output power of the laser begins to drop down, the exposure is stopped, and the phase shift is π/2 then. It is necessary to anneal the PS-FBG to stabilize its characteristics, which will reduce the introduced phase-shift. The second exposure of the PS-FBG is needed to restore the π/2 phase shift. A fiber grating laser has been made with the method. When the pump power is 100 mW, the laser output is 25 mW with signal-noise-ratio (SNR) of 60 dB. Within 1 h the output fluctuation of the laser is less than 1%. The laser is always under single-mode operation when the temperature of the fiber grating is tuned between 25 ℃ and 30 ℃.
    [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Fabrication of Yb-Doped Phase-Shifted Fiber Grating Laser[J]. Collection Of theses on high power laser and plasma physics, 2007, 5(1): 181
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