Phase Control of Attosecond Pulses in a Train
Abstract
Ultrafast processes in matter can be captured and even controlled by using sequences of few-cycle optical pulses, which need to be well characterized, both in amplitude and phase. The same degree of control has not yet been achieved for few-cycle extreme ultraviolet pulses generated by high-order harmonic generation in gases, with duration in the attosecond range. Here, we show that by varying the spectral phase and carrier-envelope phase (CEP) of a high-repetition rate laser, using dispersion in glass, we achieve a high degree of control of the relative phase and CEP between consecutive attosecond pulses. The experimental results are supported by a detailed theoretical analysis based upon the semiclassical three-step model for high-order harmonic generation.
Cite
@article{arxiv.1901.04410,
title = {Phase Control of Attosecond Pulses in a Train},
author = {Chen Guo and Anne Harth and Stefanos Carlström and Yu-Chen Cheng and Sara Mikaelsson and Erik Mårsell and Christoph Heyl and Miguel Miranda and Mathieu Gisselbrecht and Mette B. Gaarde and Kenneth J. Schafer and Anders Mikkelsen and Johan Mauritsson and Cord L. Arnold and Anne L'Huillier},
journal= {arXiv preprint arXiv:1901.04410},
year = {2019}
}
Comments
17 pages, 8 figures, published on 16 January 2018