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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7597
DOIs
StatePublished - 2010
EventPhysics and Simulation of Optoelectronic Devices XVIII - San Francisco, CA, United States
Duration: Jan 25 2010Jan 28 2010

Other

OtherPhysics and Simulation of Optoelectronic Devices XVIII
CountryUnited States
CitySan Francisco, CA
Period1/25/101/28/10

Fingerprint

Photoluminescence
Quantum Dots
Semiconductor quantum dots
Conservation
conservation
Ensemble
Polarization
quantum dots
photoluminescence
polarization
State Transition
Electron transitions
Excitation
excitation
Streak cameras
streak cameras
Rate Equations
Excited States
Phonon
Excited states

Keywords

  • Dephasing
  • Quantum dots
  • TEM
  • TRPL

ASJC Scopus subject areas

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

Cite this

Chernikov, A., Horst, S., Koch, S. W., Chatterjee, S., Rühle, W. W., Sweet, J., ... Wegener, M. (2010). Polarization conservation and dephasing in InAs quantum dot ensembles. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7597). [75971R] 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.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7597 2010. 75971R.

Research output: Chapter in Book/Report/Conference proceedingConference 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 Proceedings of SPIE - The International Society for Optical Engineering. vol. 7597, 75971R, Physics and Simulation of Optoelectronic Devices XVIII, San Francisco, CA, United States, 1/25/10. https://doi.org/10.1117/12.841589
Chernikov A, Horst S, Koch SW, Chatterjee S, Rühle WW, Sweet J et al. Polarization conservation and dephasing in InAs quantum dot ensembles. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7597. 2010. 75971R 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. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7597 2010.
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AU - Sweet, Julian

AU - Richards, Benjamin C.

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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.

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