Author Affiliations
Abstract
1 Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748, Garching, Germany
2 Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany
3 Peking University, Beijing 100871, PR China
We report on a target system supporting automated positioning of nano-targets with a precision resolution of $4~\unicode[STIX]{x03BC}\text{m}$ in three dimensions. It relies on a confocal distance sensor and a microscope. The system has been commissioned to position nanometer targets with 1 Hz repetition rate. Integrating our prototype into the table-top ATLAS 300 TW-laser system at the Laboratory for Extreme Photonics in Garching, we demonstrate the operation of a 0.5 Hz laser-driven proton source with a shot-to-shot variation of the maximum energy about 27% for a level of confidence of 0.95. The reason of laser shooting experiments operated at 0.5 Hz rather than 1 Hz is because the synchronization between the nano-foil target positioning system and the laser trigger needs to improve.
high intense laser nm thick target positioning system repetition rated laser-driven ion source High Power Laser Science and Engineering
2017, 5(2): 02000e12
中国科学院上海光学精密机械研究所强光开放实验室, 上海 201800
在激光强度大于1018W/cm2的条件下,利用强激光场中完全相对论的电子运动轨迹,得到了稀薄等离子体中的逆韧致吸收系数计算公式,并与原有的逆韧致吸收系数的计算公式进行了比较。
等离子体 逆韧致吸收 强激光场
研究了一种利用超短强激光脉冲实现在真空中加速自由电子的方案, 并讨论了其具体实施的可行性。同时给出了实现该方案的计算机模拟结果, 与理论分析很好地符合。结果表明该方案简易可行, 具有很高的实用价值。
光加速器 超短脉冲激光 强场激光
