Journal article
Coherent photocurrent spectroscopy of single InP-based quantum dots in the telecom band at 1.5 µm
Publication Details
Authors: | Gordon, S.; Yacob, M.; Reithmaier, J.; Benyoucef, M.; Zrenner, A. |
Publisher: | SPRINGER |
Publication year: | 2016 |
Journal: | Applied Physics B: Lasers and Optics |
Pages range : | 122:37 |
Volume number: | 122 |
Number of pages: | 7 |
ISSN: | 0946-2171 |
DOI-Link der Erstveröffentlichung: |
Abstract
In this work we study the resonant and coherent properties of single InP-based InAs quantum dots, which show an optical emission in the telecom C-band and L-band. High-resolution resonant photocurrent spectroscopy on p-i-n devices reveals narrow linewidths and fully resolved fine structure splittings. We observe Lorentzian line shapes, which allow for the extraction of dephasing times as a function of the applied bias voltage. Coherent ps laser excitation results in pronounced Rabi rotations with increasing pulse area. For p-pulse excitation, we obtain more than 93 % of the theoretically expected photocurrent amplitude. Our results also demonstrate that such state-of-the-art InP-based quantum dots for the telecom band exhibit promising key parameters
In this work we study the resonant and coherent properties of single InP-based InAs quantum dots, which show an optical emission in the telecom C-band and L-band. High-resolution resonant photocurrent spectroscopy on p-i-n devices reveals narrow linewidths and fully resolved fine structure splittings. We observe Lorentzian line shapes, which allow for the extraction of dephasing times as a function of the applied bias voltage. Coherent ps laser excitation results in pronounced Rabi rotations with increasing pulse area. For p-pulse excitation, we obtain more than 93 % of the theoretically expected photocurrent amplitude. Our results also demonstrate that such state-of-the-art InP-based quantum dots for the telecom band exhibit promising key parameters
