Absolute Measurement of Femtosecond Pump-Probe Signal Strength Cho, Byungmoon ; Tiwari, Vivek ; Hill, Robert J. ; Peters, William K. ; Courtney, Trevor L. ; Spencer, Austin P. ; Jonas, David M. Abstract Publication: Journal of Physical Chemistry A Pub Date: July 2013 DOI: 10.1021/jp4019662 Bibcode: 2013JPCA..117.6332C