Interpreting pulse-shape effects in pump-probe spectroscopies
The effect of the pulse-shape on pump-probe spectroscopies is examined for the simplest model of noninteracting fermions on an infinite-dimensional hypercubic lattice. The probe-modified density of states follows the time evolution of the pump and displays narrowing and Floquet-like sidebands at th...
Gespeichert in:
| Datum: | 2018 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут фізики конденсованих систем НАН України
2018
|
| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/157461 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Interpreting pulse-shape effects in pump-probe spectroscopies / A.M. Shvaika, O.P. Matveev, T.P. Devereaux, J.K. Freericks // Condensed Matter Physics. — 2018. — Т. 21, № 3. — С. 33707: 1–18. — Бібліогр.: 30 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | The effect of the pulse-shape on pump-probe spectroscopies is examined for the simplest model of noninteracting fermions on an infinite-dimensional hypercubic lattice. The probe-modified density of states follows the time
evolution of the pump and displays narrowing and Floquet-like sidebands at the pump maximum, whereas the
photoelectron spectra are also strongly affected by the nonequilibrium occupation of the single-particle states
due to the excitation from the pump. The nonequilibrium Raman cross section is derived, and the nonresonant one in both the A1g and B1g symmetries contains a number of peaks at the pump maximum, which can
be attributed to an interference effect or Brillouin scattering off the time variations of the stress tensor. Both
the “measured” occupation of single-particle states and the ratio of Stokes to anti-Stokes peaks are strongly
modified by the probe-pulse width, which must be included in the interpretation of experimental results. |
|---|