Related Experiment Video
Updated: Jul 2, 2025
10:40
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
7.5K
A solid-state high harmonic generation spectrometer with cryogenic cooling
Finn Kohrell1,2, Bailey R Nebgen2,3, Jacob A Spies2,3
1Institute for Optics and Quantum Electronics, Friedrich Schiller University Jena, 07743 Jena, Germany.
The Review of Scientific Instruments
|February 28, 2024
Summary
We developed an advanced solid-state high harmonic generation (sHHG) spectrometer for cryogenic measurements. This new tool enables temperature-dependent sHHG studies of condensed matter, especially highly correlated materials at low temperatures.
Area of Science:
- Condensed matter physics
- Quantum optics
- Spectroscopy
Background:
- Solid-state high harmonic generation (sHHG) spectroscopy is a powerful method for probing electronic properties.
- Current limitations hinder low-temperature measurements, restricting studies of emergent quantum phenomena.
Purpose of the Study:
- To implement an advanced sHHG spectrometer capable of cryogenic temperature measurements.
- To enable temperature-dependent sHHG spectroscopy down to a few Kelvin.
Main Methods:
- Construction of a sHHG spectrometer within a vacuum chamber and closed-cycle helium cryostat.
- Integration of an in situ temperature probe to monitor sample temperature.
- Application of high-intensity femtosecond laser pulses for harmonic generation.
Main Results:
- The spectrometer successfully maintained cryogenic temperatures in the sample interaction region during laser excitation.
- Demonstrated the capability for temperature-dependent sHHG measurements at cryogenic levels.
Conclusions:
- The developed cryogenic sHHG spectrometer is a novel tool for low-temperature condensed matter research.
- This technique is particularly valuable for investigating highly correlated materials and their low-temperature emergent phases.
