TY  - JOUR
A1  - Goldshteyn, Jevgeni
A1  - Bojahr, Andre
A1  - Gaal, Peter
A1  - Schick, Daniel
A1  - Bargheer, Matias
T1  - Selective preparation and detection of phonon polariton wavepackets by stimulated Raman scattering
T2  - Physica status solidi : Physica status solidi
N2  - Wavevector-selective impulsive excitation of phonon-polaritons by a spectrally broad femtosecond transient grating produces wavepackets propagating in opposite directions. The photons in spectrally narrow probe pulses are scattered from these elementary excitations in lithium niobate (LiNbO3). Both elastically and inelastically scattered photons are simultaneously detected in a spectrometer. The Stokes- and anti-Stokes shifted probe pulses uniquely determine the propagation direction of the detected polariton wavepacket components and correspond to creation or annihilation of phonon-polaritons. Our experiments with spectrally broad pump and spectrally narrow probe pulses allows dissecting the four-wave-mixing process into two sequential stimulated Raman scattering events.
Y1  - 2014
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/37952
SN  - 0370-1972
SN  - 1521-3951
VL  - 251
IS  - 4
SP  - 821
EP  - 828
PB  - Wiley-VCH
CY  - Weinheim
ER  -