Time-resolved transient grating (TG) spectroscopy facilitates detailed studies of electron dynamics and transport phenomena by means of a periodic excitation of matter with coherent ultrashort light pulses. Several current and next generation free-electron laser (FEL) facilities provide fully coherent pulses with few femtosecond pulse durations and extreme ultraviolet (XUV) photon energies. Thus, they allow for transient grating experiments with periodicities as small as tens of nanometers and with element specific photon energies. Here, we demonstrate the element specificity of XUV TG (X-TG) experiments by tuning the photon energy across the Si L2,3-edge of Si3N4. We observe a shortening of the signal decay when increasing the XUV photon energy above the absorption edge. The analysis of the wavelength dependent signal shows that the faster decay is driven by the increase in the charge carrier density. From the decay constants the interband Auger coefficient at elevated temperatures and high electron densities has been determined.
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6 May 2019
Research Article|
May 06 2019
Nonlinear XUV-optical transient grating spectroscopy at the Si L2,3–edge
R. Bohinc
;
R. Bohinc
a)
1
Paul Scherrer Institut (PSI)
, 5232 Villigen PSI, Switzerland
a)Author to whom correspondence should be addressed: rok.bohinc@psi.ch
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G. Pamfilidis;
G. Pamfilidis
1
Paul Scherrer Institut (PSI)
, 5232 Villigen PSI, Switzerland
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J. Rehault;
J. Rehault
1
Paul Scherrer Institut (PSI)
, 5232 Villigen PSI, Switzerland
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P. Radi
;
P. Radi
1
Paul Scherrer Institut (PSI)
, 5232 Villigen PSI, Switzerland
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C. Milne
;
C. Milne
1
Paul Scherrer Institut (PSI)
, 5232 Villigen PSI, Switzerland
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J. Szlachetko;
J. Szlachetko
2
Institute of Nuclear Physics, Polish Academy of Sciences
, 31-342 Kraków, Poland
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F. Bencivenga
;
F. Bencivenga
3
Elettra-Sincrotrone Trieste S.C.p.A.
, S.S. 14 km 163,5 in Area Science Park, I-34012 Basovizza, Trieste, Italy
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F. Capotondi;
F. Capotondi
3
Elettra-Sincrotrone Trieste S.C.p.A.
, S.S. 14 km 163,5 in Area Science Park, I-34012 Basovizza, Trieste, Italy
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R. Cucini;
R. Cucini
4
Istituto Officina dei Materiali-CNR
, 34149 Basovizza (TS), Italy
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L. Foglia
;
L. Foglia
3
Elettra-Sincrotrone Trieste S.C.p.A.
, S.S. 14 km 163,5 in Area Science Park, I-34012 Basovizza, Trieste, Italy
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C. Masciovecchio;
C. Masciovecchio
3
Elettra-Sincrotrone Trieste S.C.p.A.
, S.S. 14 km 163,5 in Area Science Park, I-34012 Basovizza, Trieste, Italy
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R. Mincigrucci;
R. Mincigrucci
3
Elettra-Sincrotrone Trieste S.C.p.A.
, S.S. 14 km 163,5 in Area Science Park, I-34012 Basovizza, Trieste, Italy
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E. Pedersoli
;
E. Pedersoli
3
Elettra-Sincrotrone Trieste S.C.p.A.
, S.S. 14 km 163,5 in Area Science Park, I-34012 Basovizza, Trieste, Italy
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A. Simoncig;
A. Simoncig
3
Elettra-Sincrotrone Trieste S.C.p.A.
, S.S. 14 km 163,5 in Area Science Park, I-34012 Basovizza, Trieste, Italy
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N. Mahne
;
N. Mahne
5
IOM-CNR
, Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
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A. Cannizzo;
A. Cannizzo
6
Institute of Applied Physics, University of Bern
, 3012 Bern, Switzerland
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H. M. Frey;
H. M. Frey
6
Institute of Applied Physics, University of Bern
, 3012 Bern, Switzerland
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Z. Ollmann;
Z. Ollmann
6
Institute of Applied Physics, University of Bern
, 3012 Bern, Switzerland
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T. Feurer;
T. Feurer
6
Institute of Applied Physics, University of Bern
, 3012 Bern, Switzerland
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A. A. Maznev;
A. A. Maznev
7
Massachusetts Institute of Technology
, Cambridge, Massachusetts 02139, USA
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K. Nelson;
K. Nelson
7
Massachusetts Institute of Technology
, Cambridge, Massachusetts 02139, USA
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G. Knopp
G. Knopp
1
Paul Scherrer Institut (PSI)
, 5232 Villigen PSI, Switzerland
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a)Author to whom correspondence should be addressed: rok.bohinc@psi.ch
Appl. Phys. Lett. 114, 181101 (2019)
Article history
Received:
December 12 2018
Accepted:
March 31 2019
Connected Content
A correction has been published:
Erratum: “Nonlinear XUV-optical transient grating spectroscopy at the Si L2,3-edge” [Appl. Phys. Lett. 114, 181101 (2019)]
Citation
R. Bohinc, G. Pamfilidis, J. Rehault, P. Radi, C. Milne, J. Szlachetko, F. Bencivenga, F. Capotondi, R. Cucini, L. Foglia, C. Masciovecchio, R. Mincigrucci, E. Pedersoli, A. Simoncig, N. Mahne, A. Cannizzo, H. M. Frey, Z. Ollmann, T. Feurer, A. A. Maznev, K. Nelson, G. Knopp; Nonlinear XUV-optical transient grating spectroscopy at the Si L2,3–edge. Appl. Phys. Lett. 6 May 2019; 114 (18): 181101. https://doi.org/10.1063/1.5085413
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