A solid-state high harmonic generation spectrometer with cryogenic cooling
Abstract
Solid-state high harmonic generation spectroscopy (sHHG) is a promising technique for studying electronic structure, symmetry, and dynamics in condensed matter systems. Here, we report on the implementation of an advanced sHHG spectrometer based on a vacuum chamber and closed-cycle helium cryostat. Using an in situ temperature probe, it is demonstrated that the sample interaction region retains cryogenic temperature during the application of high-intensity femtosecond laser pulses that generate high harmonics. The presented implementation opens the door for temperature-dependent sHHG measurements down to few Kelvin, which makes sHHG spectroscopy a new tool for studying phases of matter that emerge at low temperatures, which is particularly interesting for highly correlated materials.
Cite
@article{arxiv.2309.01049,
title = {A solid-state high harmonic generation spectrometer with cryogenic cooling},
author = {Finn Kohrell and Bailey R. Nebgen and Jacob A. Spies and Richard Hollinger and Alfred Zong and Can Uzundal and Christian Spielmann and Michael Zuerch},
journal= {arXiv preprint arXiv:2309.01049},
year = {2024}
}