Buldt Joachim, Mueller Michael, Stark Henning, Jauregui Cesar, Limpert Jens
1Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Albert-Einstein-Str. 6, 07745 Jena, Germany.
2Helmholtz-Institute Jena, Fröbelstieg 3, 07743 Jena, Germany.
Appl Phys B. 2020;126(1):2. doi: 10.1007/s00340-019-7353-2. Epub 2019 Nov 26.
We present on THz generation in the two-color gas plasma scheme driven by a high-power, ultrafast fiber laser system. The applied scheme is a promising approach for scaling the THz average power but it has been limited so far by the driving lasers to repetition rates up to 1 kHz. Here, we demonstrate recent results of THz generation operating at a two orders of magnitude higher repetition rate. This results in a unprecedented THz average power of 50 mW. The development of compact, table-top THz sources with high repetition rate and high field strength is crucial for studying nonlinear responses of materials, particle acceleration or faster data acquisition in imaging and spectroscopy.
我们展示了由高功率超快光纤激光系统驱动的双色气体等离子体方案中太赫兹（THz）的产生。所应用的方案是提高太赫兹平均功率的一种有前景的方法，但迄今为止，它受到驱动激光的限制，重复频率最高只能达到1千赫兹。在此，我们展示了太赫兹产生在两个数量级更高重复频率下的最新结果。这产生了前所未有的50毫瓦太赫兹平均功率。开发具有高重复频率和高场强的紧凑型桌面式太赫兹源对于研究材料的非线性响应、粒子加速或成像与光谱学中更快的数据采集至关重要。
