Journal ArticleDOI
Coherent interactions in pump-probe absorption measurements: the effect of phase gratings
S. L. Palfrey,Tony F. Heinz +1 more
TLDR
In this article, the authors show that in order to describe completely the coherent coupling between the pump and probe pulses in a pump-probe measurement of transient absorption, the influence of induced phase gratings must be included.Abstract:
We show that in order to describe completely the coherent coupling between the pump and probe pulses in a pump– probe measurement of transient absorption, the influence of induced phase gratings must be included. The importance of phase gratings is demonstrated experimentally for the case of a bleachable dye and analyzed in terms of transient four-wave mixing. These results are relevant to the interpretation of pump–probe measurements on all time scales performed with pulses from a single laser, particularly when the pulse duration is comparable with the material response time.read more
Citations
More filters
Journal ArticleDOI
Plasmon-induced resonance energy transfer for solar energy conversion
TL;DR: In this article, plasmonics enable the opposite transfer direction, transferring the plasmanic energy towards the short-wavelength direction to induce charge separation in a semiconductor.
Journal ArticleDOI
Femtosecond optical Kerr studies on the origin of the nonlinear responses in simple liquids
TL;DR: In this article, the time-resolved optical Kerr responses of several simple molecular liquids are probed with 65-fs laser pulses and four dynamically distinct responses associated with the nonlinear susceptibility are observed in every liquid that possesses a permanent anisotropic polarizability.
Journal ArticleDOI
Ultrafast Energy Equilibration in Hydrogen-Bonded Liquids
TL;DR: In this article, the authors studied the equilibration dynamics of liquid water and alcohols following a local deposition of energy using time-resolved femtosecond mid-infrared pump−probe spectroscopy.
Journal ArticleDOI
Femtosecond Real-Time Probing of Reactions. 19. Nonlinear (DFWM) Techniques for Probing Transition States of Uni- and Bimolecular Reactions
TL;DR: Degenerate four-wave mixing (DFWM) as mentioned in this paper uses ∼60 femtosecond (fs) laser pulses to study transition-state dynamics of chemical reactions in the gas phase.
Journal ArticleDOI
Competing nonradiative channels for hot electron induced surface photochemistry
TL;DR: In this article, the authors investigated the ultrafast dynamics of competing nonradiative channels for hot electron mechanisms in various polycrystalline metal samples and measured the energy relaxation and the transport of the photoexcited carriers.
References
More filters
Journal ArticleDOI
Nonlinear Picosecond-Pulse Propagation Through Optical Fibers with Positive Group Velocity Dispersion
TL;DR: In this paper, the predictions of the nonlinear Schrodinger equation have been tested by passing 5.5psec optical pulses through a 70m single-mode optical fiber, and dramatic reshaping of the input pulses into flat-topped, frequency-broadened, and positively chirped 20psec output pulses with self-steepened fall times of less than 2 psec was observed.
Journal ArticleDOI
Picosecond coherence coupling in the pump and probe technique
Zeev Valy Vardeny,Jan Tauc +1 more
TL;DR: In this paper, a general expression for the coherent artifact in photoinduced absorption measured by coherent polarized pump and probe beams is derived, and conditions for its reduction in isotropic media by using cross-polarized beams are discussed.
Journal ArticleDOI
Theory of degenerate four-wave mixing in picosecond excitation-probe experiments
TL;DR: In this paper, a comparative theoretical study of the transient grating coherent effects in resonant picosecond excitation-probe experiments is presented, in which signal contributions from concentration and orientational gratings are distinguished and their temporal natures discussed.
Journal ArticleDOI
Parametric Coupling in an Optically Excited Plasma in Ge
C. V. Shank,D. H. Auston +1 more
Journal ArticleDOI
Coherent coupling effects in pump–probe measurements with collinear, copropagating beams
TL;DR: The existence of coherent coupling effects in pump-probe measurements with collinear, copropagating beams, despite the absence of any induced spatial gratings in this geometry is demonstrated.
Related Papers (5)
The life and times of excited states of organometallic and coordination compounds
Antonín Vlček,Antonín Vlček +1 more