Harmonic generation via excitation of surface states formed from spatially separated electrons and holes in nanocomposites

Хасанов, О. Х.; Smirnova, T. V.; Федотова, О. М.; Rusetsky, G. A.; Gayvoronsky, V. Ya.; Pokutnyi, Sergey I.; Gaižauskas, E.

doi:10.1117/12.2305744

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2019

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“…It is evident that a large value of the PDM impacts on the QD properties. As we have shown earlier [13], the efficiency of terahertz radiation in nanocomposites consisting of QDs with a large PDM exceeds 10%. According to [14], the presence of PDM can induce multistability in a laser system.…”

Section: Introductionsupporting

confidence: 52%

Echo-spectroscopy of nanocomposites

Хасанов¹,

Федотова²,

Rusetsky³

et al. 2019

Laser Phys.

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Methods of characterization of nanocomposites consisting of semiconductor quantum dots incorporated into a transparent nonlinear dielectric matrix are elaborated. Spectral composition, observation time, and phase-matching conditions for echo-responses excited by two noncollinear pulses are analysed. More specifically, spectral and spatial features of echo signals caused by permanent dipole moments (PDMs) inherent to quantum dots and local field effects in them, as well as by the angular distribution function of the PDM orientations and spatial dispersion of transition dipole moments, are considered.

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Section: Introductionsupporting

confidence: 52%