Directional and Dynamic Modulation of the Optical Emission of an Individual GaAs Nanowire Using Surface Acoustic Waves

被引：53

作者：

Kinzel, Joerg B. ^{[1
,2
]}

Rudolph, Daniel ^{[3
,4
]}

Bichler, Max ^{[3
,4
]}

Abstreiter, Gerhard ^{[3
,4
]}

Finley, Jonathan J. ^{[3
,4
]}

Koblmueller, Gregor ^{[3
,4
]}

Wixforth, Achim ^{[1
,2
,5
]}

Krenner, Hubert J. ^{[1
,2
]}

机构：

[1] Univ Augsburg, Lehrstuhl Expt Phys 1, D-86159 Augsburg, Germany

[2] Univ Augsburg, ACIT, D-86159 Augsburg, Germany

[3] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany

[4] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[5] Ctr NanoSci CeNS, D-80539 Munich, Germany

来源：

NANO LETTERS | 2011年 / 11卷 / 04期

关键词：

Nanowires; surface acoustic waves; photoluminescence; acousto-electric effects; SINGLE-PHOTON SOURCE; QUANTUM DOTS;

D O I：

10.1021/nl1042775

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on optical experiments performed on individual GaAs nanowires and the manipulation of their temporal emission characteristics using a surface acoustic wave. We find a pronounced, characteristic suppression of the emission intensity for the surface acoustic wave propagation aligned with the axis of the naowire. Furthermore, we demonstrate that this quenching is dynamical as it shows a pronounced modulation as the local phase of the surface acoustic wave is tuned. These effects are strongly reduced for a surface acoustic wave applied in the direction perpendicular to the axis of the nanowire due to their inherent one-dimensional geometry. We resolve a fully dynamic modulation of the nanowire emission up to 678 MHz not limited by the physical properties of the nanowires.

引用

页码：1512 / 1517

页数：6

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