Polarization conservation and dephasing in InAs quantum dot ensembles

Alexej Chernikov; Swantje Horst; Stephan W. Koch; Sangam Chatterjee; Wolfgang W. Rühle; Julian Sweet; Benjamin C. Richards; Joshua Hendrickson; Galina Khitrova; Hyatt M. Gibbs; Dimitri Litvinov; Dagmar Gerthsen; Martin Wegener

doi:10.1117/12.841589

Polarization conservation and dephasing in InAs quantum dot ensembles

Alexej Chernikov, Swantje Horst, Stephan W. Koch, Sangam Chatterjee, Wolfgang W. Rühle, Julian Sweet, Benjamin C. Richards, Joshua Hendrickson, Galina Khitrova, Hyatt M. Gibbs, Dimitri Litvinov, Dagmar Gerthsen, Martin Wegener

Optical Sciences, College of

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We present time-resolved photoluminescence measurements performed on an ensemble of InAs quantum dots with density of 10¹¹ dots/cm2 and ground state transition energies centered at 1.216 eV. The wavelength of the 100fs excitation pulse was tuned through the ground (excited) state transitions, resulting in resonant (optical phonon assisted) photoluminescence (PL). The PL was detected with its polarization both parallel with and perpendicular to the excitation polarization (along one of the crystal's cleave axes). The decay of the PL was time-resolved with a streak camera in the interval 1.5 - 3ns to avoid scattered laser light. A strong polarization dependence was observed. Considerable amount of the resonant fluorescence signal and even of the non-resonant PL signatures remained linearly polarized on a nanosecond time scale. A phenomenological rate equation analysis is made.

Original language	English (US)
Title of host publication	Physics and Simulation of Optoelectronic Devices XVIII
DOIs	https://doi.org/10.1117/12.841589
State	Published - Jun 15 2010
Event	Physics and Simulation of Optoelectronic Devices XVIII - San Francisco, CA, United States Duration: Jan 25 2010 → Jan 28 2010

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7597
ISSN (Print)	0277-786X

Other

Other	Physics and Simulation of Optoelectronic Devices XVIII
Country	United States
City	San Francisco, CA
Period	1/25/10 → 1/28/10

Keywords

Dephasing
Quantum dots
TEM
TRPL

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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Chernikov, A., Horst, S., Koch, S. W., Chatterjee, S., Rühle, W. W., Sweet, J., Richards, B. C., Hendrickson, J., Khitrova, G., Gibbs, H. M., Litvinov, D., Gerthsen, D., & Wegener, M. (2010). Polarization conservation and dephasing in InAs quantum dot ensembles. In Physics and Simulation of Optoelectronic Devices XVIII [75971R] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7597). https://doi.org/10.1117/12.841589

Polarization conservation and dephasing in InAs quantum dot ensembles. / Chernikov, Alexej; Horst, Swantje; Koch, Stephan W.; Chatterjee, Sangam; Rühle, Wolfgang W.; Sweet, Julian; Richards, Benjamin C.; Hendrickson, Joshua; Khitrova, Galina; Gibbs, Hyatt M.; Litvinov, Dimitri; Gerthsen, Dagmar; Wegener, Martin.

Physics and Simulation of Optoelectronic Devices XVIII. 2010. 75971R (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7597).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chernikov, A, Horst, S, Koch, SW, Chatterjee, S, Rühle, WW, Sweet, J, Richards, BC, Hendrickson, J, Khitrova, G, Gibbs, HM, Litvinov, D, Gerthsen, D & Wegener, M 2010, Polarization conservation and dephasing in InAs quantum dot ensembles. in Physics and Simulation of Optoelectronic Devices XVIII., 75971R, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7597, Physics and Simulation of Optoelectronic Devices XVIII, San Francisco, CA, United States, 1/25/10. https://doi.org/10.1117/12.841589

Chernikov, Alexej ; Horst, Swantje ; Koch, Stephan W. ; Chatterjee, Sangam ; Rühle, Wolfgang W. ; Sweet, Julian ; Richards, Benjamin C. ; Hendrickson, Joshua ; Khitrova, Galina ; Gibbs, Hyatt M. ; Litvinov, Dimitri ; Gerthsen, Dagmar ; Wegener, Martin. / Polarization conservation and dephasing in InAs quantum dot ensembles. Physics and Simulation of Optoelectronic Devices XVIII. 2010. (Proceedings of SPIE - The International Society for Optical Engineering).

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AU - Horst, Swantje

AU - Koch, Stephan W.

AU - Chatterjee, Sangam

AU - Rühle, Wolfgang W.

AU - Sweet, Julian

AU - Richards, Benjamin C.

AU - Hendrickson, Joshua

AU - Khitrova, Galina

AU - Gibbs, Hyatt M.

AU - Litvinov, Dimitri

AU - Gerthsen, Dagmar

AU - Wegener, Martin

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N2 - We present time-resolved photoluminescence measurements performed on an ensemble of InAs quantum dots with density of 1011 dots/cm2 and ground state transition energies centered at 1.216 eV. The wavelength of the 100fs excitation pulse was tuned through the ground (excited) state transitions, resulting in resonant (optical phonon assisted) photoluminescence (PL). The PL was detected with its polarization both parallel with and perpendicular to the excitation polarization (along one of the crystal's cleave axes). The decay of the PL was time-resolved with a streak camera in the interval 1.5 - 3ns to avoid scattered laser light. A strong polarization dependence was observed. Considerable amount of the resonant fluorescence signal and even of the non-resonant PL signatures remained linearly polarized on a nanosecond time scale. A phenomenological rate equation analysis is made.

AB - We present time-resolved photoluminescence measurements performed on an ensemble of InAs quantum dots with density of 1011 dots/cm2 and ground state transition energies centered at 1.216 eV. The wavelength of the 100fs excitation pulse was tuned through the ground (excited) state transitions, resulting in resonant (optical phonon assisted) photoluminescence (PL). The PL was detected with its polarization both parallel with and perpendicular to the excitation polarization (along one of the crystal's cleave axes). The decay of the PL was time-resolved with a streak camera in the interval 1.5 - 3ns to avoid scattered laser light. A strong polarization dependence was observed. Considerable amount of the resonant fluorescence signal and even of the non-resonant PL signatures remained linearly polarized on a nanosecond time scale. A phenomenological rate equation analysis is made.

KW - Dephasing

KW - Quantum dots

KW - TEM

KW - TRPL

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