Nonresonant Transient Refractive Index Spectroscopy in Semiconductor Quantum Dots
Kazan E. K. Zavoisky Physical -Technical Institute, Sibirsky tract, 10/7 420029 Kazan, Russia
a Corresponding author: firstname.lastname@example.org
Published online: 25 September 2015
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.
Key words: quantum dots / semiconductor nanoparticles / transient lens / nonlinear refractive index
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