Fabrication of coupled GaAs quantum dots and their optical properties

Jong Su Kim; Jin Dong Song; Clare C. Byeon; Hoonsoo Kang; Mun Seok Jeong; Nam Ki Cho; Sung Jun Park; Won Jun Choi; Jung Il Lee; Jin Soo Kim; Jae Young Leem; Sang Youp Yim; Do Kyeong Ko; Jongmin Lee

doi:10.1002/pssc.200880613

Fabrication of coupled GaAs quantum dots and their optical properties

Jong Su Kim, Jin Dong Song, Clare C. Byeon, Hoonsoo Kang, Mun Seok Jeong, Nam Ki Cho, Sung Jun Park, Won Jun Choi, Jung Il Lee, Jin Soo Kim, Jae Young Leem, Sang Youp Yim, Do Kyeong Ko, Jongmin Lee

School of Mechanical Engineering

Research output: Contribution to journal › Conference article › peer-review

8 Scopus citations

Abstract

The coupled GaAs quantum dot molecules (QDMs), which were laterally coupled along the [110] direction, were formed by droplet epitaxy. The optical properties of QDMs were investigated by femtosecond laser excited photoluminescence (PL) measurement. When the laser polarization is parallel to [110] direction on the QDMs, the main PL peak is red-shifted by 55 meV from the PL peak measured with the laser polarization parallel to [110] direction. By changing the excitation power, we found that the emission wavelength of the QDMs was strongly depending on the excitation laser polarization. From this result, we carefully suggested that the confined states in QDMs could be tuned by optical field.

Original language	English
Pages (from-to)	802-805
Number of pages	4
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	6
Issue number	4
DOIs	https://doi.org/10.1002/pssc.200880613
State	Published - 2009
Event	5th International Conference on Semiconductor Quantum Dots, QD 2008 - Gyeongju, Korea, Republic of Duration: 11 May 2008 → 16 May 2008

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title = "Fabrication of coupled GaAs quantum dots and their optical properties",

abstract = "The coupled GaAs quantum dot molecules (QDMs), which were laterally coupled along the [110] direction, were formed by droplet epitaxy. The optical properties of QDMs were investigated by femtosecond laser excited photoluminescence (PL) measurement. When the laser polarization is parallel to [110] direction on the QDMs, the main PL peak is red-shifted by 55 meV from the PL peak measured with the laser polarization parallel to [110] direction. By changing the excitation power, we found that the emission wavelength of the QDMs was strongly depending on the excitation laser polarization. From this result, we carefully suggested that the confined states in QDMs could be tuned by optical field.",

author = "Kim, {Jong Su} and Song, {Jin Dong} and Byeon, {Clare C.} and Hoonsoo Kang and Jeong, {Mun Seok} and Cho, {Nam Ki} and Park, {Sung Jun} and Choi, {Won Jun} and Lee, {Jung Il} and Kim, {Jin Soo} and Leem, {Jae Young} and Yim, {Sang Youp} and Ko, {Do Kyeong} and Jongmin Lee",

year = "2009",

doi = "10.1002/pssc.200880613",

language = "English",

volume = "6",

pages = "802--805",

journal = "Physica Status Solidi (C) Current Topics in Solid State Physics",

issn = "1862-6351",

publisher = "Wiley-VCH Verlag",

number = "4",

note = "5th International Conference on Semiconductor Quantum Dots, QD 2008 ; Conference date: 11-05-2008 Through 16-05-2008",

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TY - JOUR

T1 - Fabrication of coupled GaAs quantum dots and their optical properties

AU - Kim, Jong Su

AU - Song, Jin Dong

AU - Byeon, Clare C.

AU - Kang, Hoonsoo

AU - Jeong, Mun Seok

AU - Cho, Nam Ki

AU - Park, Sung Jun

AU - Choi, Won Jun

AU - Lee, Jung Il

AU - Kim, Jin Soo

AU - Leem, Jae Young

AU - Yim, Sang Youp

AU - Ko, Do Kyeong

AU - Lee, Jongmin

PY - 2009

Y1 - 2009

N2 - The coupled GaAs quantum dot molecules (QDMs), which were laterally coupled along the [110] direction, were formed by droplet epitaxy. The optical properties of QDMs were investigated by femtosecond laser excited photoluminescence (PL) measurement. When the laser polarization is parallel to [110] direction on the QDMs, the main PL peak is red-shifted by 55 meV from the PL peak measured with the laser polarization parallel to [110] direction. By changing the excitation power, we found that the emission wavelength of the QDMs was strongly depending on the excitation laser polarization. From this result, we carefully suggested that the confined states in QDMs could be tuned by optical field.

AB - The coupled GaAs quantum dot molecules (QDMs), which were laterally coupled along the [110] direction, were formed by droplet epitaxy. The optical properties of QDMs were investigated by femtosecond laser excited photoluminescence (PL) measurement. When the laser polarization is parallel to [110] direction on the QDMs, the main PL peak is red-shifted by 55 meV from the PL peak measured with the laser polarization parallel to [110] direction. By changing the excitation power, we found that the emission wavelength of the QDMs was strongly depending on the excitation laser polarization. From this result, we carefully suggested that the confined states in QDMs could be tuned by optical field.

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U2 - 10.1002/pssc.200880613

DO - 10.1002/pssc.200880613

M3 - Conference article

AN - SCOPUS:70349423887

SN - 1862-6351

VL - 6

SP - 802

EP - 805

JO - Physica Status Solidi (C) Current Topics in Solid State Physics

JF - Physica Status Solidi (C) Current Topics in Solid State Physics

IS - 4

T2 - 5th International Conference on Semiconductor Quantum Dots, QD 2008

Y2 - 11 May 2008 through 16 May 2008

ER -

Fabrication of coupled GaAs quantum dots and their optical properties

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