Nonresonant Transient Refractive Index Spectroscopy in Semiconductor Quantum Dots

Nonresonant Transient Refractive Index Spectroscopy in Semiconductor Quantum Dots

We report transient refractive index change in semiconductor nanoparticles dispersed in polymethylmethacrylate matrix via pump-probe experiment. At lower pump intensities the detected signal consists of the pulse autocorrelation-shaped part and another part delayed by 300 fs. The latter’s relative i...

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Veröffentlicht in:EPJ Web of conferences 2015-01, Vol.103, p.7006-07001
Hauptverfasser: Zharkov, D K, Leontyev, A V, Shmelev, A G, Nikiforov, V G, Lobkov, V S
Format: Artikel
Sprache:eng
Schlagworte:
Electrons
Nanoparticles
nonlinear refractive index
Pumps
Quantum dots
Refractive index
Refractivity
semiconductor nanoparticles
Semiconductors
Single crystals
Spectroscopy
transient lens
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Zusammenfassung:We report transient refractive index change in semiconductor nanoparticles dispersed in polymethylmethacrylate matrix via pump-probe experiment. At lower pump intensities the detected signal consists of the pulse autocorrelation-shaped part and another part delayed by 300 fs. The latter’s relative intensity depends on the pump level. However in CdS monocrystal the detected signal was found to lack this second feature completely.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201510307006