Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'506'133
Articles rated: 2609

26 April 2024

» arxiv » 1509.1439

Article overview

Controlling circular polarization of light emitted by quantum dots using chiral photonic crystal slab
S. V. Lobanov ; S. G. Tikhodeev ; N. A. Gippius ; A. A. Maksimov ; E. V. Filatov ; I. I. Tartakovskii ; V. D. Kulakovskii ; T. Weiss ; C. Schneider ; J. Geßler ; M. Kamp ; S. Höfling ;
Date:	4 Sep 2015
Abstract:	Polarization properties of the emission have been investigated for quantum dots embedded in chiral photonic crystal structures made of achiral planar GaAs waveguides. A modification of the electromagnetic mode structure due to the chiral grating fabricated by partial etching of the waveguide layer has been shown to result in a high circular polarization degree $ ho_c$ of the quantum dot emission in the absence of external magnetic field. The physical nature of the phenomenon can be understood in terms of the reciprocity principle taking into account the structural symmetry. At the resonance wavelength, the magnitude of $\| ho_c\|$ is predicted to exceed 98%. The experimentally achieved value of $\| ho_c\|=81$% is smaller, which is due to the contribution of unpolarized light scattered by grating defects, thus breaking its periodicity. The achieved polarization degree estimated removing the unpolarized nonresonant background from the emission spectra can be estimated to be as high as 96%, close to the theoretical prediction.
Source:	arXiv, 1509.1439
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap