Nonlinearity of the induced absorption in a CdSe quantum dot in borosilicate glass

Authors
Shin, SH Hwang, YN Chae, KM Park, SH Kim, U
Citation
Sh. Shin et al., Nonlinearity of the induced absorption in a CdSe quantum dot in borosilicate glass, J KOR PHYS, 33(6), 1998, pp. 726-729
Citations number
12
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN journal
03744884 → ACNP
Volume
33
Issue
6
Year of publication
1998
Pages
726 - 729
Database
ISI
SICI code
0374-4884(199812)33:6<726:NOTIAI>2.0.ZU;2-C
Abstract
We investigate the origin of the induced absorption in CdSe quantum dots in borosilicate glass by using pump-probe spectroscopy and self-saturated pum p-probe spectroscopy. The change in the absorption spectrum above the bandg ap is found to be due to electrons in trap levels. The induced absorption a round 520 nm occurs due to electrons in trap levels which again absorb the probe beam.