News

Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize- for pioneering work in ultrafast lasers
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
NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules

UV-Vis transient absorption with ns/us time resolution

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Location    Contact
Département de chimie physique
Université de Genève
30, quai Ernest Ansermet
1211 Genève 4
 
  Bernhard Lang
022 379 6535
6beq8rnx9haf0rdz1.lt&ant8g@e+unq2igw,e.y1chu
 
     

Setup / Configuration

 
   
  • Pump-probe transient absorption spectrometer excitation: at 355nm
  • spectral range probe:  350nm - 600nm, 250nm - 800nm under construction
  • time resolution: <1ns
 
 
  • Excitation at 532nm will be soon available
 
.Nd:YAG pump laser    Picture: Reference and signal spectrometers (front ) and Nd:YAG pump laser (back)

As probe light a white light continuum from a 400nm femtosecond source is used. A passively Q-switched YAG laser with 100ps pulse duration serves as excitation source at 500 Hz. It is synchronized to the fs laser system through a programmable delay generator. Time resolution in the ns range is achieved through a high-resolution time delay counter and a shot-to-shot sorting algorithm. The upper limiting time delay is about 800μs, dictated by the repetition rate of the fs laser system.  
 
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The National Centres of Competence in Research (NCCR) are a research instrument of the Swiss National Science Foundation