Quantum Dot-Plasmon Lasing with Controlled Polarization Patterns

Jun Guan, Laxmi Kishore Sagar, Ran Li, Danqing Wang, Golam Bappi, Weijia Wang, Nicolas Watkins, Marc R. Bourgeois, Larissa Levina, Fengjia Fan, Sjoerd Hoogland, Oleksandr Voznyy, Joao Martins De Pina, Richard D. Schaller, George C. Schatz, Edward H. Sargent, Teri W. Odom

Research output: Contribution to journalArticle

Abstract

The tailored spatial polarization of coherent light beams is important for applications ranging from microscopy to biophysics to quantum optics. Miniaturized light sources are needed for integrated, on-chip photonic devices with desired vector beams; however, this issue is unresolved because most lasers rely on bulky optical elements to achieve such polarization control. Here, we report on quantum dot-plasmon lasers with engineered polarization patterns controllable by near-field coupling of colloidal quantum dots to metal nanoparticles. Conformal coating of CdSe-CdS core-shell quantum dot films on Ag nanoparticle lattices enables the formation of hybrid waveguide-surface lattice resonance (W-SLR) modes. The sidebands of these hybrid modes at nonzero wavevectors facilitate directional lasing emission with either radial or azimuthal polarization depending on the thickness of the quantum dot film.

Original languageEnglish
Pages (from-to)3426-3433
Number of pages8
JournalACS nano
Volume14
Issue number3
DOIs
Publication statusPublished - Mar 24 2020

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Keywords

  • band structure engineering
  • colloidal quantum dots
  • lattice plasmons
  • nanolaser
  • radially and azimuthally polarization states
  • surface lattice resonances
  • waveguide

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Guan, J., Sagar, L. K., Li, R., Wang, D., Bappi, G., Wang, W., Watkins, N., Bourgeois, M. R., Levina, L., Fan, F., Hoogland, S., Voznyy, O., De Pina, J. M., Schaller, R. D., Schatz, G. C., Sargent, E. H., & Odom, T. W. (2020). Quantum Dot-Plasmon Lasing with Controlled Polarization Patterns. ACS nano, 14(3), 3426-3433. https://doi.org/10.1021/acsnano.9b09466