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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

CEOstab

Duration: 6 months, Start: January 2014

Academic project leader: Ursula Keller, Institution: Ultrafast Laser Physics, IQE, ETH Zürich. Industrial project partner: Zurich Instruments - Sadik Hafizovic

SESAM modelocked gigahertz femtosecond high-power diode-pumped solid-state lasers (DPSSLs) as invented by the group of Prof. Ursula Keller exhibit an intrinsic low quantum noise level, making them an ideal and cost effective sources for optical frequency combs. However, carrier envelope offset (CEO) frequency stabilization of these high repetition rate lasers (GHz range) requires sophisticated control electronics.

Zurich Instruments is a company specialized on fast digital signal processing. This project explores ways to adapt Zurich Instruments' ultra fast lock-in amplifier UHFLI - also comprising multiple PID controllers and phased locked loops - to allow for CEO stabilization in this demanding regime.

A first set of measurements with a less demanding laser in the MHz range concluded successful and indicates that a further reduction of internal instrument delays to a minimum and the implementation of a larger lock-range by using phase unwrapping will increase the performance sufficient to cater also for lasers in the GHz range. This will ultimately lead to digitally-stabilized high-power gigahertz optical frequency combs for many applications in precision metrology, nonlinear spectroscopy and ultrafast optical communications.

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