Towards new regimes of lattice dynamics using femtosecond time-resolved x-ray scattering

• Applicant: Professor Dr. Dietrich von der Linde (†)
• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: from 2002 to 2011
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 5373597

It is proposed to develop a laser-driven, femtosecond, keV x-ray source of high average x-ray flux. Such x-ray pulses will open up new regimes of study in lattice dynamics using elastic and inelastic x-ray scattering. Intense optical excitation will be used to drive strong lattice excitations leading to substantial excursions of the lattice atoms from their equilibrium position. These investigations will provide new information on the energy relaxation in laser-excited solids and shed light on specific coherent lattice excitations that may eventually lead to structural changes of the material.

• DFG Programme: Priority Programmes
• Subproject of: SPP 1134: Transient structures in condensed matter investigated by ultrafast x-ray techniques
• Major Instrumentation: Pump laser (dioded-pumped YAG)
• Instrumentation Group: 5780 Nichtlineare Optik (Frequenzvervielfacher)
• Participating Persons: Professor Dr. Klaus Sokolowski-Tinten; Dr. Ping Zhou