Hollow core fiber delivery of sub-ps pulses from a TruMicro 5000 Femto edition thin disk amplifier
Hollow core fiber delivery of sub-ps pulses from a TruMicro 5000 Femto edition thin disk amplifier
复制标题
空心光纤传输来自 TruMicro 5000 Femto 版薄盘放大器的亚皮秒脉冲
DOI：
10.1117/12.2079289
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发表时间：
2015
期刊：
影响因子：
3.8
通讯作者：
F. Benabid
中科院分区：
文献类型：
--
作者：
S. Pricking;R. Gebs;R. Fleischhaker;J. Kleinbauer;A. Budnicki;D. Sutter;A. Killi;S. Weiler;M. Mielke;B. Beaudou;B. Debord;F. Gérôme;F. Benabid
本文报道了由TruMicro Series 5000 Femto Edition薄圆盘放大器在1030nm波长处产生的平均功率为50w的亚ps单模脉冲的光纤传输。充气空心芯kagomacom型传输光纤具有次摆线芯壁，在1030nm处具有非常低的色散和非线性。它最大限度地减少了与玻璃部件的模态重叠，以获得足够高的损伤阈值。在传输损耗仅为20 dB/km的情况下，通过望远镜和5轴表进行优化的模式匹配和耦合，我们实现了80%以上的整体传输效率，M2为1.15。我们的激光源提供200到800 kHz的重复频率选择，这意味着脉冲能量在60到250 μJ之间。在光纤出口，脉冲持续时间保持在900 fs，而由于空芯中的自相位调制，光谱宽度扩大到20 nm，可以用于进一步压缩脉冲的时间。使用基于光纤的光束传输允许加工头与激光源的机械解耦，增加了超短脉冲激光器在材料加工领域应用的灵活性。
We report on the fiber-based transmission of sub-ps single-mode pulses with an average power of 50 W at a wavelength of 1030 nm generated by a TruMicro Series 5000 Femto Edition thin disk amplifier. The air-filled hollow-core Kagométype delivery fiber exhibits a hypocycloid core wall and is tailored to offer very low dispersion and nonlinearity at 1030 nm. It minimizes the mode overlap with the glass components to obtain a sufficiently high damage threshold. With propagation losses of only 20 dB/km and an optimized mode matching and coupling by means of a telescope and a 5- axes table we achieve an overall transmission efficiency of more than 80% with a resulting M2 of 1.15. Our laser source offers the selection of repetition rates from 200 to 800 kHz which translates to pulse energies between 60 and 250 μJ. The pulse duration of 900 fs is maintained at the fiber exit, while the spectral width broadens to 20 nm due to self phase modulation in the air core, which could be used to further compress the pulses temporally. Using a fiber-based beam transport allows for mechanical decoupling of the processing head from the laser source, increasing flexibility for applications in the field of material processing with ultra-short pulsed lasers.
影响因子：
3.8
作者：
Jaworski, Piotr;Yu, Fei;Hand, Duncan P.
通讯作者：
Hand, Duncan P.