All-optical switching device for infrared based on PbTe quantum dots

E. Rodriguez, G. Kellermann, A. F. Craievich, E. Jimenez, C. L. César, L. C. Barbosa

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Multilayers of PbTe quantum dots embedded in SiO2 were fabricated by alternate use of Pulsed Laser Deposition (PLD) and Plasma Enhanced Chemical Vapor Deposition (PECVD) techniques. The morphological properties of the nanostructured material were studied by means of High Resolution Transmission Electron Microscopy (HRTEM), Grazing-Incidence Small-Angle X-ray scattering (GISAXS) and X-ray Reflectometry (XRR) techniques. A preliminary analysis of the GISAXS spectra provided information about the multilayer periodicity and its relationship to the size of the deposited PbTe nanoparticles. Finally multilayers were fabricated inside a Fabry-Perot cavity. The device was characterized by means of Scanning Electron Microscopy (SEM). Transmittance measurements show the device functionality in the infrared region.

Original languageEnglish
Pages (from-to)626-634
Number of pages9
JournalSuperlattices and Microstructures
Volume43
Issue number5-6
DOIs
StatePublished - May 2008
Externally publishedYes

Keywords

  • All optical switching devices
  • GISAXS
  • PECVD
  • Pulsed Laser Deposition
  • Semiconductor quantum dots
  • X-ray reflectometry

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