Next Article in Journal
Numerical Analysis of Nonlocal Optical Response of Metallic Nanoshells
Previous Article in Journal
The Influence of Embedded Plasmonic Nanostructures on the Optical Absorption of Perovskite Solar Cells
Previous Article in Special Issue
Long Wavelength (λ > 17 µm) Distributed Feedback Quantum Cascade Lasers Operating in a Continuous Wave at Room Temperature
Article Menu

Export Article

Open AccessArticle
Photonics 2019, 6(2), 38; https://doi.org/10.3390/photonics6020038

Evidence of Intersubband Linewidth Narrowing Using Growth Interruption Technique

1
Centre for Nanosciences and Nanotechnologies, CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay, 91120 Palaiseau, France
2
Laboratorio TASC, CNR-IOM, Area Science Park, I34149 Trieste, Italy
*
Authors to whom correspondence should be addressed.
Received: 8 February 2019 / Revised: 22 March 2019 / Accepted: 27 March 2019 / Published: 1 April 2019
  |  
PDF [1798 KB, uploaded 3 April 2019]
  |  

Abstract

We report on the systematic study of two main scattering mechanisms on intersubband transitions, namely ionized impurity scattering and interface roughness scattering. The former mechanism has been investigated as a function of the dopants position within a multiple GaAs/AlGaAs quantum well structure and compared to the transition of an undoped sample. The study on the latter scattering mechanism has been conducted using the growth interruption technique. We report an improvement of the intersubband (ISB) transition linewidth up to 11% by interrupting growth at GaAs-on-AlGaAs interfaces. As a result, the lifetime of intersubband polaritons could be improved up to 9%. This leads to a reduction of 17% of the theoretical threshold intensity for polaritonic coherent emission. This work brings a useful contribution towards the realization of polariton-based devices. View Full-Text
Keywords: Quantum wells; Intersubband transitions; Growth interruption; Modulation doping; Polaritons Quantum wells; Intersubband transitions; Growth interruption; Modulation doping; Polaritons
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Tran, N.L.; Biasiol, G.; Jollivet, A.; Bertocci, A.; Julien, F.H.; Manceau, J.-M.; Colombelli, R. Evidence of Intersubband Linewidth Narrowing Using Growth Interruption Technique. Photonics 2019, 6, 38.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Photonics EISSN 2304-6732 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top