Publication result detail

Polarization anisotropy of the emission from type-II quantum dots

KLENOVSKÝ, P.; HEMZAL, D.; STEINDL, P.; ZIKOVÁ, M.; KŘÁPEK, V.; HUMLÍČEK, J.

Original Title

Polarization anisotropy of the emission from type-II quantum dots

English Title

Polarization anisotropy of the emission from type-II quantum dots

Type

WoS Article

Original Abstract

We study the polarization response of the emission from type-II GaAsSb capped InAs quantum dots. The theoretical prediction based on the calculations of the overlap integrals of the single-particle states obtained in the k - p framework is given. This is verified experimentally by polarization resolved photoluminescence measurements on samples with the type-II confinement. We show that the polarization anisotropy might be utilized to find the vertical position of the hole wave function and its orientation with respect to crystallographic axes of the sample. A proposition for usage in the information technology as a room temperature photonic gate operating at the communication wavelengths as well as a simple model to estimate the energy of fine-structure splitting for type-II GaAsSb capped InAs QDs are given.

English abstract

We study the polarization response of the emission from type-II GaAsSb capped InAs quantum dots. The theoretical prediction based on the calculations of the overlap integrals of the single-particle states obtained in the k - p framework is given. This is verified experimentally by polarization resolved photoluminescence measurements on samples with the type-II confinement. We show that the polarization anisotropy might be utilized to find the vertical position of the hole wave function and its orientation with respect to crystallographic axes of the sample. A proposition for usage in the information technology as a room temperature photonic gate operating at the communication wavelengths as well as a simple model to estimate the energy of fine-structure splitting for type-II GaAsSb capped InAs QDs are given.

Keywords

Type II quantum dots; Emission; Theory

Key words in English

Type II quantum dots; Emission; Theory

Authors

KLENOVSKÝ, P.; HEMZAL, D.; STEINDL, P.; ZIKOVÁ, M.; KŘÁPEK, V.; HUMLÍČEK, J.

RIV year

2016

Released

15.12.2015

Publisher

American Physical Society

ISBN

0163-1829

Periodical

PHYSICAL REVIEW B

Volume

92

Number

24

State

United States of America

Pages from

241302-1

Pages to

241302-5

Pages count

5

URL

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.241302

Full text in the Digital Library

http://hdl.handle.net/11012/201032

Documents

PhysRevB.92.241302