Seminars

PIER Photon Science Colloquium: An Orchestra of Light: Advanced Timing Distribution and Light Wave Synthesis

by Franz Kärtner (DESY CFEL and University of Hamburg, The Hamburg Centre for Ultrafast Imaging CUI, Massachusetts Institute of Technology, Cambridge, USA)

Friday, April 19, 2013 from to (Europe/Berlin)
at DESY Hamburg ( CFEL Lecture Hall, Bldg. 99 )
 Description Kilometer scale free-electron lasers will reach their full potential in providing molecular movies if all laser and rf-sources involved in the facility can be timed and synchronized to at least 10-fs precision with scalability to potentially 100 attoseconds in the future. A set of ultrafast optical techniques for long-term stable femtosecond synchronization of large-scale X-ray free-electron lasers will be presented and performance scaling towards sub-femtosecond precision will be demonstrated. Sub-cycle optical waveforms with spectra spanning multiple octaves are desired for efficient attosecond pulse generation and multi-wavelength spectroscopy. It turns out that some of the techniques invented for large scale timing distribution can be used to coherently stitch few-cycle optical pulses together. Progress towards a multi-Joule optical waveform synthesizer covering 500 nm – 2.5 µm will be presented and potential applications are discussed.