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Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize- for pioneering work in ultrafast lasers

Farewell: the NCCR MUST ended - on June 30, 2022

MUST2022 Conference- a great success!

New scientific highlights- by MUST PIs Wörner, Chergui, and Richardson

FELs of Europe prize for Jeremy Rouxel- “Development or innovative use of advanced instrumentation in the field of FELs”

Ruth Signorell wins Doron prizefor pioneering contributions to the field of fundamental aerosol science

New FAST-Fellow Uwe Thumm at ETH- lectures on Topics in Femto- and Attosecond Science

International Day of Women and Girls in Science- SSPh asked female scientists about their experiences

New scientific highlight- by MUST PIs Milne, Standfuss and Schertler

EU XFEL Young Scientist Award for Camila Bacellar,beamline scientist and group leader of the Alvra endstation at SwissFEL

Prizes for Giulia Mancini and Rebeca Gomez CastilloICO/IUPAP Young Scientist Prize in Optics & Ernst Haber 2021

Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List- for the development of asymmetric organocatalysis

Hans Jakob Wörner invited to give the „New Horizons Solvay Lectures” - online, October 5, 12 and 19

Unusual keynote talk at an international scientific conference- Do photons show gender bias?

NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules

Attosecond-femtosecond pump-probe: Attoline

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Location		Contact
ETH Zurich, IQE Ultrafast Laser Physics Auguste-Piccard-Hof 1 8093 Zurich		Dr. Matteo Lucchini Tel: +41 44 633 39 14 +mlf7uco.cha%ind*i@f#phy2yst9.ek#tht4z.b-chr

Configuration / Setup		Literature
Multi-pass, two-stage Ti:sapphire amplifier (Femtolasers Femtopower V CEP). Two outputs: 1.2 mJ with 30 fs time duration and 10 mJ with 35 fs time duration, both CEP stabilized at 1 kHz repetition rate. Pulse compression by filamentation down to 5 fs with 400 μJ. Alternative femtosecond IR beam from TOPAS OPA system. High-order harmonic generation: Spectral domain: VUV photons with energy up to 100 eV (<1 nJ per pulse & harmonic). Time domain: generation of attosecond pulse trains and single attosecond pulses. Attosecond-femtosecond pump-probe setup with 107 as resolution. Photoelectron and photoion TOF spectrometer. Photon spectrometer for detection of up to 1.2 keV photon energy with 0.12 eV resolution. Second target region, which can host different interaction chambers.		Locher, R., Lucchini, M., Herrmann, J., Sabbar, M., Weger, M., Ludwig, A., Castiglioni, L., Greif, M., Hengsberger, M., Gallmann, L., Keller, U. (2014) Versatile attosecond beamline in a two-foci configuration for simultaneous time-resolved measurements. Rev Sci Instr 85, 013113 »» Holler, M., Schapper, F., Gallmann, L., Keller, U. (2011) Attosecond Electron Wave-Packet Interference Observed by Transient Absorption. Phys Rev Lett 106, 123601 »» Herrmann, J., Weger, M., Locher, R., Sabbar, M., Rivière, P., Saalmann, U., Rost, J.-M., Gallmann, L., Keller, U. (2012) Virtual single-photon transition interrupted: time-gated optical gain and loss. Phys Rev 88, 043843 »»
Attoline schematic		Attosecond pulse generation
. The image shows a schematic of the attoline. Since the generated photons are in the XUV spectral region the whole line has to be in vacuum. The first five vacuum chambers (green frame) are used to properly modify the driving IR beam properties and generate the XUV light. The chamber in the blue frame is placed in the first interaction region for pump-probe experiments and hosts a TOF spectrometer. In the last part of the attoline (red frame) we find the photon spectrometer and the second interaction region where other experiments can be accomodated. In the given example a hemispherical analyzer for photoemission studies from solid-state targets is connected to the attoline (orange frame).		During the interaction between a strong infrared (IR) pulse with the atoms of a gas, high-order harmonics of the driving field are generated (HHG). Since the HHG repeats itself each half optical cycle of the IR field, a comb of odd harmonic is generated in frequency. The first pictures on the left shows the spectra of harmonics generated with 30 fs (black) or 5 fs (red) IR pulses. HHG corresponds in time to the generation of a train of attosecond pulses. If the HHG process is gated such that the generation can occur only within one half-optical cycle, a single attosecond pulse (SAP) can be selected. The second picture shows a cross-correlation trace used to fully characterize the SAP generated in the attoline.