Our latest development, femtosecond Transient Vibrational Absorption Spectroscopy (fs-TVAS), complements our existing Transient Electronic Absorption Spectrometer by adding chemically specific detection in the infrared spectral region at wavenumbers from 800 - 4000 cm^-1. 

  
 
Experimental setup for femtosecond transient vibrational absorption spectroscopy.                                  (c) H. Böhnke, F. Temps

The measurement of vibrational bands of observable intermediates and products in the IR with a time resolution < 100 fs allows us to identify the species based on comparison with their (calculated) vibrational spectra. Current applications include investigations of H-transfer switches and the dynamics of  DNA building blocks. CaF₂.