A solid-state high harmonic generation spectrometer with cryogenic cooling
Abstract
Solid-state high harmonic generation (sHHG) spectroscopy 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 a 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.
- Publication:
-
Review of Scientific Instruments
- Pub Date:
- February 2024
- DOI:
- 10.1063/5.0174407
- arXiv:
- arXiv:2309.01049
- Bibcode:
- 2024RScI...95b3906K
- Keywords:
-
- ARTICLES;
- Equipment and Techniques for Condensed Matter and Materials; Diamond Anvil Cells;
- and other High-Pressure Equipment;
- Thin films;
- Physics - Applied Physics;
- Condensed Matter - Materials Science;
- Physics - Instrumentation and Detectors
- E-Print:
- Review of Scientific Instruments 95, 023906 (2024)