Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator

K.A. Piegdon, M. Offer, A. Lorke, M. Urbanski, A. Hoischen, H.-S. Kitzerow, S. Declair, J. Förstner, T. Meier, D. Reuter, A.D. Wieck, C. Meier, Physica E: Low-Dimensional Systems and Nanostructures 42 (2010) 2552–2555.

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Abstract
GaAs-based semiconductor microdisks with high quality whispering gallery modes (Q44000) have been fabricated.A layer of self-organized InAs quantumdots (QDs) served as a light source to feed the optical modes at room temperature. In order to achieve frequency tuning of the optical modes, the microdisk devices have been immersed in 4 – cyano – 4´-pentylbiphenyl (5CB), a liquid crystal(LC) with a nematic phase below the clearing temperature of TC≈34°C .We have studied the device performance in the temperature rangeof T=20-50°C, in order to investigate the influence of the nematic–isotropic phase transition on the optical modes. Moreover,we havea pplied an AC electric field to the device,which leads in the nematic phase to a reorientation of the anisotropic dielectric tensor of the liquid crystal.This electrical anisotropy can be used to achieve electrical tunability of the optical modes.Using the finite-difference time domain (FDTD) technique with an anisotropic material model, we are able to describe the influence of the liquid crystal qualitatively.
Publishing Year
Journal Title
Physica E: Low-dimensional Systems and Nanostructures
Volume
42
Issue
10
Page
2552-2555
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Piegdon KA, Offer M, Lorke A, et al. Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator. Physica E: Low-dimensional Systems and Nanostructures. 2010;42(10):2552-2555. doi:10.1016/j.physe.2009.12.051
Piegdon, K. A., Offer, M., Lorke, A., Urbanski, M., Hoischen, A., Kitzerow, H.-S., … Meier, C. (2010). Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator. Physica E: Low-Dimensional Systems and Nanostructures, 42(10), 2552–2555. https://doi.org/10.1016/j.physe.2009.12.051
@article{Piegdon_Offer_Lorke_Urbanski_Hoischen_Kitzerow_Declair_Förstner_Meier_Reuter_et al._2010, title={Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator}, volume={42}, DOI={10.1016/j.physe.2009.12.051}, number={10}, journal={Physica E: Low-dimensional Systems and Nanostructures}, publisher={Elsevier BV}, author={Piegdon, Karoline A. and Offer, Matthias and Lorke, Axel and Urbanski, Martin and Hoischen, Andreas and Kitzerow, Heinz-S. and Declair, Stefan and Förstner, Jens and Meier, Torsten and Reuter, Dirk and et al.}, year={2010}, pages={2552–2555} }
Piegdon, Karoline A., Matthias Offer, Axel Lorke, Martin Urbanski, Andreas Hoischen, Heinz-S. Kitzerow, Stefan Declair, et al. “Self-Assembled Quantum Dots in a Liquid-Crystal-Tunable Microdisk Resonator.” Physica E: Low-Dimensional Systems and Nanostructures 42, no. 10 (2010): 2552–55. https://doi.org/10.1016/j.physe.2009.12.051.
K. A. Piegdon et al., “Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator,” Physica E: Low-dimensional Systems and Nanostructures, vol. 42, no. 10, pp. 2552–2555, 2010.
Piegdon, Karoline A., et al. “Self-Assembled Quantum Dots in a Liquid-Crystal-Tunable Microdisk Resonator.” Physica E: Low-Dimensional Systems and Nanostructures, vol. 42, no. 10, Elsevier BV, 2010, pp. 2552–55, doi:10.1016/j.physe.2009.12.051.
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