Abstract
PbS quantum dots synthesis in boro-silicate glass is presented. Absorption bleaching of PbS quantum dots of approximate to 4 and approximate to 7 nm in diameter dispersed in this glass has been studied. Bleaching relaxation time of 20-30 ps, absorption saturation fluence of approximate to 5 mJ/cm(2) and ground-state absorption cross-section of 2 divided by 6 X 10(-17) cm(2) at the wavelengths corresponding to the first excitonic absorption band maxima are measured.
Original language | English |
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Pages (from-to) | 1195-1200 |
Number of pages | 6 |
Journal | Journal of Non-Crystalline Solids |
Volume | 353 |
Issue number | 11-12 |
Early online date | 13 Mar 2007 |
DOIs | |
Publication status | Published - 1 May 2007 |
Keywords
- nanocrystals
- quantum wells, wires and dots
- optical spectroscopy
- ultrafast processes and measurements
- boro-silicates
- passive-mode locking
- 1.3 MU-M
- doped glass
- neodymium lasers
- saturable absorbers
- relaxation