Compact realization of all-attosecond pump-probe spectroscopy
Abstract
The ability to perform attosecond-pump attosecond-probe spectroscopy (APAPS) is a longstanding goal in ultrafast science. While first pioneering experiments demonstrated the feasibility of APAPS, the low repetition rates (10-120 Hz) and the large footprints of existing setups have so far hindered the widespread exploitation of APAPS. Here we demonstrate two-color APAPS using a commercial laser system at 1 kHz, straightforward post-compression in a hollow-core fiber and a compact high-harmonic generation (HHG) setup. The latter enables the generation of intense extreme-ultraviolet (XUV) pulses by using an out-of-focus HHG geometry and by exploiting a transient blueshift of the driving laser in the HHG medium. Near-isolated attosecond pulses are generated, as demonstrated by one-color and two-color XUV-pump XUV-probe experiments. Our concept allows selective pumping and probing on extremely short timescales and permits investigations of fundamental processes that are not accessible by other pump-probe techniques.
Keywords
Cite
@article{arxiv.2306.16212,
title = {Compact realization of all-attosecond pump-probe spectroscopy},
author = {Martin Kretschmar and Evaldas Svirplys and Mikhail Volkov and Tobias Witting and Tamás Nagy and Marc J. J. Vrakking and Bernd Schütte},
journal= {arXiv preprint arXiv:2306.16212},
year = {2023}
}
Comments
8 pages, 5 figures