High power Yb-doped photonic bandgap fiber oscillator at 1178 nm.
High power Yb-doped photonic bandgap fiber oscillator at 1178 nm.
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DOI：
10.1364/oe.20.014471
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发表时间：
2012-06
期刊：
影响因子：
3.8
通讯作者：
Xinyan Fan;Meishin Chen;A. Shirakawa;K. Ueda;C. Olausson;J. Lyngsø;J. Broeng
中科院分区：
文献类型：
--
作者：
Xinyan Fan;Meishin Chen;A. Shirakawa;K. Ueda;C. Olausson;J. Lyngsø;J. Broeng
研究了一种全光纤结构的高功率超长波长掺镱实芯光子带隙光纤振荡器。光子带隙光纤与两个布拉格光纤光栅拼接构成谐振腔。光子带隙光纤的锐截止带通分布滤波效应有效地抑制了传统高增益区的放大自发辐射。通过用更紧密的直径进行线圈的短截止波长的微调来抑制寄生激射。在1178 nm处获得了53.6 W的激光输出，斜率效率为53%。
An ytterbium-doped solid-core photonic bandgap fiber oscillator in an all-fiber format is investigated for high power at an extreme long wavelength. The photonic bandgap fiber is spliced with two fiber Bragg gratings to compose the cavity. The sharp-cut bandpass distributed filtering effect of the photonic bandgap fibers efficiently suppresses amplified spontaneous emission in the conventional high-gain region. Fine adjustment of the short cut-off wavelength by coiling with tighter diameter is performed to suppress parasitic lasing. A record output power of 53.6 W with a slope efficiency of 53% at 1178 nm was demonstrated.