FERMI@Elettra is a free electron laser user facility that will produce high-brightness, ultra-short pulses with broad wavelength coverage for a wide range of user experiments. Currently, FERMI uses the HGHG technique to improve both the longitudinal and spectral coherence and the stability of the output of the laser. Using a High Harmonic (HH) source to drive the HGHG process will allow FERMI to reach shorter wavelengths with a single stage. It also will provide a comparison between HH and HGHG seeding methods. For the HH source, we will use neutral atoms in a hollow waveguide in combination with pulse shaping of the drive laser pulse to provide wavelength tuning as well as selective enhancement of the harmonic orders. In this paper, we the discuss the scaling of HH generation to several hundreds of nanoJoule pulse energy at a specific harmonic (several tens of MW peak power) and present the HH source under construction at the university of Twente.
|Number of pages||4|
|Publication status||Published - 1 Dec 2010|
|Event||32nd International Free Electron Laser Conference, FEL 2010 - Malmö, Sweden|
Duration: 23 Aug 2010 → 27 Aug 2010
Conference number: 32
|Conference||32nd International Free Electron Laser Conference, FEL 2010|
|Period||23/08/10 → 27/08/10|