Speaker
Description
Transient grating (TG) is widely used in the optical domain to gain information on transport-diffusion processes and on vibrational, charge and magnetic dynamics of the ground and excited state. Extension of TG to X-rays would allow to overcome the limitations of the longer wavelengths reaching the ultimate time and spatial resolutions (femtosecond/sub-nanometer) with high momentum-transfer, chemical-selectivity and study both the surface and bulk properties. We have demonstrated the validity of the technique by generating X-ray TG and probing with an optical laser and with X-rays. Our results open the possibility to apply XTG to perform studies on semiconductors, magnetic materials, strongly correlated and quantum materials, disordered systems and chemical compounds.
