Visible Q-switched pulse laser oscillation in Pr-doped double-clad structured waterproof fluoride glass fiber with graphene
Visible Q-switched pulse laser oscillation in Pr-doped double-clad structured waterproof fluoride glass fiber with graphene
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DOI：
10.1016/j.optcom.2018.04.024
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发表时间：
2018-10
影响因子：
2.4
通讯作者：
S. Kajikawa;M. Yoshida;O. Ishii;M. Yamazaki;Y. Fujimoto
中科院分区：
文献类型：
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作者：
S. Kajikawa;M. Yoshida;O. Ishii;M. Yamazaki;Y. Fujimoto
以石墨烯为可饱和吸收体，在掺Pr的双包层结构防水氟化物玻璃光纤中成功地产生了可见的636 nm调Q脉冲序列，并计算出斜率效率为22.1%。所有观测脉冲的平均射电频率和平均脉宽分别为633 kHz和185 ns。我们还讨论了用外推法在石墨烯中产生调Q操作所需的强度，并根据波长估算了石墨烯产生Q开关振荡所需的强度从kW/cm2到mW/cm2。
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.