All polarization-maintaining fiber laser architecture for robust femtosecond pulse generation
All polarization-maintaining fiber laser architecture for robust femtosecond pulse generation
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DOI：
10.1007/s00340-016-6598-2
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发表时间：
2017-01-01
影响因子：
2.1
通讯作者：
Holzwarth, Ronald
中科院分区：
文献类型：
--
作者：
Haensel, Wolfgang;Hoogland, Heinar;Holzwarth, Ronald
本文报道了一种新型的采用非线性光纤环镜和全保偏光纤的锁模飞秒光纤激光器结构。由于非互易相移，环形镜可以在紧凑且高效的反射模式下操作，从而提供了达到高重复率和容易实现调谐元件的可能性。特别是，纵模间距和载波包络偏移频率可以控制，以操作激光器作为一个光频梳。我们演示了飞秒脉冲产生在三个不同的波长（1030，1565，和2050 nm），分别使用镱，铒，和共掺杂的铥，钬作为增益介质。鲁棒的操作实现了广泛的参数，包括从10到250 MHz的重复率。
We report on a novel architecture for robust mode-locked femtosecond fiber lasers using a nonlinear optical loop mirror with all polarization-maintaining fibers. Due to a nonreciprocal phase shift, the loop mirror can be operated in a compact and efficient reflection mode, offering the possibility to reach high repetition rates and easy implementation of tuning elements. In particular, longitudinal mode spacing and carrier-envelope offset frequency may be controlled in order to operate the laser as an optical frequency comb. We demonstrate femtosecond pulse generation at three different wavelengths (1030, 1565, and 2050 nm) using Ytterbium, Erbium, and co-doped Thulium-Holmium as gain media, respectively. Robust operation is achieved for a wide range of parameters, including repetition rates from 10 to 250 MHz.