Spectroscopic Techniques using Synchrotron Radiation and Free-Electron and Conventional Lasers

Area of Science:

• Atomic and Molecular Physics
• Materials Science
• Surface Science
• Quantum Optics

Background:

• Investigating electronic and vibrational properties of matter requires diverse photon sources.
• Synchronized, complementary light sources enhance experimental capabilities.
• Recent advancements utilize combined laser and synchrotron facilities.

Purpose of the Study:

• To present experimental results using synchronized photon sources at LURE.
• To demonstrate the utility of combined light sources for diverse scientific investigations.
• To showcase novel applications in materials, atomic, and surface science.

Main Methods:

• Utilizing synchronized infrared free-electron laser (FEL) CLIO with a YAG laser for vibrational property studies.
• Employing a two-color configuration of CLIO for pump-probe experiments on quantum wells.
• Combining a mode-locked Ar(+) laser with synchrotron radiation for atomic ionization studies.
• Using synchronized UV storage ring laser and synchrotron radiation for time-resolved surface spectroscopy.

Main Results:

• Investigated vibrational properties of hydrogen adsorbed on platinum using visible-IR sum (difference) frequency generation.
• Studied intersubband stimulated emission in GaAs/GaAlAs quantum wells via pump-probe experiments.
• Examined Xe atom ionization through a resonant state using synchronized lasers and synchrotron radiation.
• Performed time-resolved core-level spectroscopy on photoexcited Si(111) surfaces.

Conclusions:

• The combination of synchronized, complementary photon sources significantly advances the study of electronic and vibrational properties.
• This multi-source approach enables detailed investigations across various scientific domains, from surface chemistry to quantum materials.
• Synchronized FELs, synchrotron radiation, and table lasers offer powerful tools for cutting-edge research.