News

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

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

Fluorescence up-conversion 70 fs (2)

back

Location		Contact
Department of Physical Chemistry - Sciences II University of Geneva 30 quai Ernest-Ansermet 1211 Geneva 4		Romain Letrun Tel. +41 22 379 36 58 #Roh8mac6ing2.Ll6etx2rup/n@c4unu(igv7e.b7chr

Setup / Configuration		Literature
Time-resolved fluorescence apparatus based on a KML Ti:Sapphire oscillator producing ~30 fs pulses. pump wavelength: around 400 nm repetition rate: 40 MHz detection wavelength: 420 to 700 nm instrument response function: 70 fs (fwhm)		Heisler, I. A., Kondo, M., Meech, S. R. (2009) Reactive Dynamics in Confined Liquids: Ultrafast Torsional Dynamics of Auramine O in Nanoconfined Water in Aerosol OT Reverse Micelles. J Phys Chem B. 113 (6), 1623-1631 »»
.		The top image shows the rotating sample cell (left/top) and the Schwarzschild objective (right/bottom) used to collect and focus the fluorescence. The bottom image shows pairs of chirped mirrors and wedges used to compress the laser pulses. The use of chirped mirrors allows to introduce negative group velocity dispersion (GVD), thus compensating the positive GVD induced by the dispersive elements included in the set-up. Pulses compression is necessary to improve the time resolution of the set-up. Time-resolved fluoresence spectra are reconstructed from the time profiles recorded at several wavelengths.