Journal
ACS NANO
Volume 14, Issue 3, Pages 3426-3433Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b09466
Keywords
lattice plasmons; surface lattice resonances; waveguide; band structure engineering; colloidal quantum dots; nanolaser; radially mid azimuthally polarization states
Categories
Funding
- National Science Foundation (NSF) [DMR-1608258, DMR-1904385]
- Vannevar Bush Faculty Fellowship from DOD [N00014-17-1-3023]
- Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource [NSF ECCS-1542205]
- Materials Research Science and Engineering Center (MRSEC) [DMR-1720139]
- State of Illinois
- Northwestern University
- SHyNE Resource [NSF ECCS-1542205]
- MRSEC program at the Materials Research Center [NSF DMR-1720139]
- International Institute for Nanotechnology (IIN)
- Keck Foundation
- State of Illinois through the IIN
- Office of the Provost
- Office for Research
- Ontario Research Fund-Research Excellence Program
- Natural Sciences and Engineering Research Council (NSERC) of Canada
- Northwestern University Information Technology
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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.
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