Bucksbaum Philip H
PULSE, Stanford Linear Accelerator Center, Stanford University, CA 94025, USA.
Science. 2007 Aug 10;317(5839):766-9. doi: 10.1126/science.1142135.
Attoscience is the study of physical processes that occur in less than a fraction of a cycle of visible light, in times less than a quadrillionth of a second. The motion of electrons inside atoms and molecules that are undergoing photoionization or chemical change falls within this time scale, as does the plasma motion that causes the reflectivity of metals. The techniques to study motion on this scale are based on careful control of strong-field laser-atom interactions. These techniques and new research opportunities in attosecond spectroscopy are reviewed.
阿秒科学是对在可见光周期的一小部分时间内、不到千万亿分之一秒的时间内发生的物理过程的研究。正在经历光电离或化学变化的原子和分子内部电子的运动属于这个时间尺度，导致金属反射率的等离子体运动也是如此。研究这个尺度上运动的技术基于对强场激光与原子相互作用的精确控制。本文综述了这些技术以及阿秒光谱学中的新研究机会。
