High-energy attosecond light sources

The development of attosecond technology is one of the most significant achievements in the field of ultrafast optics over the past decade. Since the first experimental demonstration of attosecond pulses just ten years ago, novel techniques have been introduced for the generation, characterization and application of subfemtosecond pulses. The development of attosecond tools is continuously triggering the introduction of new spectroscopic and measurement methods, which will offer the opportunity to investigate unexplored research areas with unprecedented time resolution. The wealth of ultrafast processes, which can be investigated by taking advantage of attosecond temporal resolution, can be greatly extended by the development of high-intensity attosecond sources. This Review covers a selection of recent advances in the field of attosecond technology, with particular attention being given to the generation and application of high-energy attosecond pulses.