title: Retrieving the susceptibility from time-resolved terahertz experiments.
abstract: We present an analytical expression for the observed signal in time- and phase-resolved pump-probe studies, with particular emphasis on terahertz time-domain spectroscopy. Maxwell's equations are solved for the response of damped, harmonic oscillators to a driving probe field in the perturbative regime. Our analytical expressions agree with the one previously reported in the literature [Nemec et al., J. Chem. Phys. 122, 104503 (2005)] in the Drude limit; however, they differ in the case of a vibrational resonance.
authors.affiliation: Opto-Electronic Materials Section, DelftChem Tech, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands.
authors.forename: J M
authors.initials: JM
authors.lastname: Schins
authors.forename: E
authors.initials: E
authors.lastname: Hendry
authors.forename: M
authors.initials: M
authors.lastname: Bonn
authors.forename: H G
authors.initials: HG
authors.lastname: Muller