Nonresonant Transient Refractive Index Spectroscopy in Semiconductor Quantum Dots

EPJ Web of Conferences

关键词: quantum dots;    semiconductor nanoparticles;    transient lens;    nonlinear refractive index;   

DOI  :  10.1051/epjconf/201510307006

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown