Quantum-dot excitons in nanostructured environments

Jørn Märcher Hvam; Søren Stobbe; Peter Lodahl

Quantum-dot excitons in nanostructured environments

Jørn Märcher Hvam (Invited author), Søren Stobbe (Invited author), Peter Lodahl (Invited author)

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.

Original language	English
Title of host publication	proceedings of the EXCON
Publisher	Wiley
Publication date	2010
Publication status	Published - 2010
Event	9^th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials - Brisbane, Australia Duration: 11 Jul 2010 → 16 Jul 2010 Conference number: 9

Conference

Conference	9^th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials
Number	9
Country/Territory	Australia
City	Brisbane
Period	11/07/2010 → 16/07/2010

Keywords

spin-flip
quantum-dot excitons
photonic crystals
oscillator strength

OpenUrl availability

Full text

Cite this

@inproceedings{bc1a93ab3a4b49fda2804cff98256e4d,

title = "Quantum-dot excitons in nanostructured environments",

abstract = "The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.",

keywords = "spin-flip, quantum-dot excitons, photonic crystals, oscillator strength",

author = "Hvam, \{J{\o}rn M{\"a}rcher\} and S{\o}ren Stobbe and Peter Lodahl",

year = "2010",

language = "English",

booktitle = "proceedings of the EXCON",

publisher = "Wiley",

note = "9<sup>th</sup> International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials, EXCON10 ; Conference date: 11-07-2010 Through 16-07-2010",

}

TY - GEN

T1 - Quantum-dot excitons in nanostructured environments

AU - Hvam, Jørn Märcher

AU - Stobbe, Søren

AU - Lodahl, Peter

N1 - Conference code: 9

PY - 2010

Y1 - 2010

N2 - The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.

AB - The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.

KW - spin-flip

KW - quantum-dot excitons

KW - photonic crystals

KW - oscillator strength

M3 - Article in proceedings

BT - proceedings of the EXCON

PB - Wiley

T2 - 9<sup>th</sup> International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials

Y2 - 11 July 2010 through 16 July 2010

ER -

Quantum-dot excitons in nanostructured environments

Abstract

Conference

Keywords

OpenUrl availability

Fingerprint

Cite this