Femtosecond Laser Facility

一个多学科联盟正在联合申请一个以飞秒激光系统为中心的激光设施。三条束流线用于物理、化学和工程实验。系统选择灵活，以满足不同的需求。与此同时，激光技术已经发展到市场上的系统，即使是非专家也可以可靠地操作。目标激光系统的脉冲重复率和脉冲能量是可变的；它也允许在突发模式下操作。这套系统将在一个专门为这些实验准备的大厅里安装。它配备了激光和各种诊断装置的激光束。接下来是光束稳定和空间光束整形。不同的研究补充反映了飞秒技术当前应用的广度。而在过去，每个应用需要一个单独的激光系统，今天高度灵活的系统可以很容易地适应非常不同的应用。具体而言，该系统旨在用于以下目的：*应用物理和工程：多模态飞秒微材料加工：结合减法和增材制造以及表面和烧蚀技术以及折射率修改/波导写入。用于微材料处理的精密延迟站已经可用，它将被转移到其中一条波束线，并在那里补充额外的测量技术。该研究分支的目标是在聚合物和玻璃中演示3D波导，并应用于量子光网络等。*飞化学：二维半导体纳米结构的太赫兹泵浦探测光谱。为此目的，现有的太赫兹产生阶段将附在系统上。其中，将研究基于纳米血小板的新型单光子源。*基础物理：强场物理，高次谐波和x射线辐射的产生。为此，现有的真空仪器和光谱仪将转移到新大厅。细丝中的等离子体动力学和纳米粒子激光等离子体产生的软x射线将被研究。该设施设计运行10年，计划足够灵活，可以很容易地适应当前的发展和新的实验要求。

A multidisciplinary consortium is jointly applying for a laser facility centered around a femtosecond laser system. Three beam lines serve experiments in physics, chemistry, and engineering. The system is selected to be flexible to meet different requirements. In the meantime, laser technology has advanced to the point where there are systems on the market that can be operated reliably even by non-experts. The targeted laser system is variable in pulse repetition rate and pulse energy; it also allows operation in burst mode. The system is to be set up in a hall being prepared especially for these experiments. It is equipped with the laser plus various diagnostic devices for the laser beam. This will be followed by beam stabilization and spatial beam shaping. This will then serve three experiments alternatively: The various research supplements reflect the breadth of current applications for femtosecond technology. Whereas in the past a separate laser system was required for each application, today highly flexible systems are available that can be easily adapted to very different applications. Specifically, the system is intended for the following purposes:* Applied physics and engineering: Multimodal femtosecond micro-material processing: combining subtractive and additive manufacturing as well as surface and ablation techniques and index modifications/waveguide writing. The precision delay station for micro material processing is already available, it will be transferred to one of the beam-lines and supplemented there with additional measurement technology. The goal of this research branch is the demonstration of 3D waveguides in polymers and glass with applications e.g. as quantum optical networks.* Femtochemistry: THz pump-probe spectroscopy on 2D semiconductor nanostructures. For this purpose, an existing THz generation stage will be attached to the system. Among others, novel single photon sources based on nanoplatelets will be investigated.* Fundamental physics: strong field physics, generation of high harmonics and of X-ray radiatio. For this purpose, existing vacuum apparatus and spectrometers will be transferred to the new hall. Plasma dynamics in filaments and the generation of soft X-rays via laser plasmas from nanoparticles will be investigated.The facility is designed to operate for 10 years and is planned to be flexible enough to be easily adapted to current developments and new experimental requirements.