Selective preparation and detection of phonon polariton wavepackets by stimulated Raman scattering

Goldshteyn, J.; Bojahr, André; Gaal, P.; Schick, Daniel; Bargheer, Matias

doi:10.1002/pssb.201350114

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…The laser-induced transient grating (TG) technique is a variation of noncollinear FWM, in which two short optical pulses of the same wavelength are overlapped in time and space in the sample to produce a spatially periodic material excitation that is probed via diffraction of a third variably delayed pulse. TG spectroscopy is used to study a wide range of phenomena in condensed matter such as the propagation of acoustic waves ( 5 , 6 ) and phonon polaritons ( 7 ), thermal transport ( 8 , 9 ), molecular diffusion ( 10 ), carrier and spin dynamics ( 11 , 12 ), magnetic recording ( 13 ), charge density waves ( 14 ), laser-plasma interaction ( 15 ), and dynamical behavior of proteins ( 16 ). It is also widely used in materials science for noncontact characterization of elastic and thermal properties.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale transient gratings excited and probed by extreme ultraviolet femtosecond pulses

et al. 2019

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Advances in developing ultrafast coherent sources operating at extreme ultraviolet (EUV) and x-ray wavelengths allow the extension of nonlinear optical techniques to shorter wavelengths. Here, we describe EUV transient grating spectroscopy, in which two crossed femtosecond EUV pulses produce spatially periodic nanoscale excitations in the sample and their dynamics is probed via diffraction of a third time-delayed EUV pulse. The use of radiation with wavelengths down to 13.3 nm allowed us to produce transient gratings with periods as short as 28 nm and observe thermal and coherent phonon dynamics in crystalline silicon and amorphous silicon nitride. This approach allows measurements of thermal transport on the ~10-nm scale, where the two samples show different heat transport regimes, and can be applied to study other phenomena showing nontrivial behaviors at the nanoscale, such as structural relaxations in complex liquids and ultrafast magnetic dynamics.

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Section: Introductionmentioning

confidence: 99%

Nanoscale transient gratings excited and probed by extreme ultraviolet femtosecond pulses

et al. 2019

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“…1(a). All-optical generation and probing of TGs is extensively discussed in the literature for thermal gratings and surface acoustic waves (Rogers et al, 2000), phonon-polaritons (Goldshteyn et al, 2014), magnetoacoustics (Janušonis et al, 2016a,b) and coherent four-wave-mixing measurements (Knoester & Mukamel, 1991). Only recently thermal TGs were investigated by diffracting hard X-ray pulses under grazing-incidence geometry (Sander et al, 2017a).…”

Section: X-ray Diffraction From High-amplitude Thermal Transient Gratmentioning

confidence: 99%

A new concept for temporal gating of synchrotron X-ray pulses

Schmidt¹,

Bauer²,

Chung³

et al. 2021

J Synchrotron Radiat

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A new concept for temporal gating of synchrotron X-ray pulses based on laser-induced thermal transient gratings is presented. First experimental tests of the concept yield a diffraction efficiency of 0.18%; however, the calculations indicate a theoretical efficiency and contrast of >30% and 10−5, respectively. The full efficiency of the pulse picker has not been reached yet due to a long-range thermal deformation of the sample after absorption of the excitation laser. This method can be implemented in a broad spectral range (100 eV to 20 keV) and is only minimally invasive to an existing setup.

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“…The spatial excitation period can be tuned from micrometers, using optical wavelengths, to tens of nanometers by means of extreme ultraviolet (EUV) light 3,5 or even X-rays. [6][7][8][9] The technique has been extensively applied to a diverse set of material processes occurring on an ultrafast time scale including the generation of surface acoustic waves, 1,3 phonon polariton excitation, 10 quasi-particle diffusion, 11 molecular diffusion, 12 thermal transport, 4,13 charge density waves, 14 and laserplasma interactions. 15 Considering the fact that spin dynamics are sensitive to inhomogeneous spatiotemporal temperature distributions, 16 TGS can be predicted to form a sensitive probe of ultrafast magnetization dynamics.…”

Section: Introductionmentioning

confidence: 99%