Università Cattolica del Sacro Cuore

Instrumentation

Elphos laboratories have been developed integrating the modern ultrafast laser sources with angle-resolved photoemission experiments and with the traditional optical spectroscopic techniques. We are currently able to investigate the non-equilibrium electron dynamics in solid-state systems through time-resolved and angle-resolved non-linear photoemission and to perform high resolution time-and frequency-resolved optical spectroscopies.

Optics

  • Amplified Ti:sapphire oscillator
    800 nm wavelength
    150 fs pulse duration
    1 kHz rep. rate, 1 W output power
  • Collinear optical parametric amplifier of super-fluorescence
    1250-2200 nm wavelength tunability
    150 fs pulse duration
  • Non-collinear optical parametric amplifier of white-light continuum
    425-750 nm wavelength tunability
    30 fs pulse duration

Photoemission

UHV chamber equipped with:

  • 5 degrees of freedom cryogenic sample holder (minimum temperature: 30 K)
  • Time of Flight spectrometer (en. resolution: 15 meV@ 2 eV kin. en.)
  • Low Energy Electron Diffraction
  • Ion-gun for sample preparation
  • Preparation chamber for sample evaporation