Publication result detail

Local Photoluminiscence on Quantum Dots

OTEVŘELOVÁ, D.

Original Title

Local Photoluminiscence on Quantum Dots

English Title

Local Photoluminiscence on Quantum Dots

Type

Paper in proceedings (conference paper)

Original Abstract

We show photoluminescence images of buried quantum dots with a spatial resolution better than 250 nm. Uncoated fiber tips illuminate the object and detect the excited photoluminescence intensity in the optical near-field of the sample. The comparison of far-field and near-field spectra leads to the mechanism of spatial resolution and intensity enhancement in this experiment. The PL intensity is dominated by the coupling of the uncoated fiber tip with the luminescent quantum dot and has an exponential decay with the sample probe distance. Photoluminescence (PL) intensity images taken at one wavelength are compared. Different contributions of the near field and far field in the PL intensity are separated.

English abstract

We show photoluminescence images of buried quantum dots with a spatial resolution better than 250 nm. Uncoated fiber tips illuminate the object and detect the excited photoluminescence intensity in the optical near-field of the sample. The comparison of far-field and near-field spectra leads to the mechanism of spatial resolution and intensity enhancement in this experiment. The PL intensity is dominated by the coupling of the uncoated fiber tip with the luminescent quantum dot and has an exponential decay with the sample probe distance. Photoluminescence (PL) intensity images taken at one wavelength are compared. Different contributions of the near field and far field in the PL intensity are separated.

Key words in English

spatial resolution, near-field, photoluminescence intensity

Authors

OTEVŘELOVÁ, D.

Released

25.04.2002

Publisher

Ing. Zdeněk Novotný CSc.

Location

Brno

ISBN

80-214-2115-0

Book

Student EEICT 2002

Pages from

229

Pages count

5

BibTex

@inproceedings{BUT4827,
  author="Dana {Otevřelová}",
  title="Local Photoluminiscence on Quantum Dots",
  booktitle="Student EEICT 2002",
  year="2002",
  pages="5",
  publisher="Ing. Zdeněk Novotný CSc.",
  address="Brno",
  isbn="80-214-2115-0"
}