期刊
ACS NANO
卷 14, 期 3, 页码 3426-3433出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b09466
关键词
lattice plasmons; surface lattice resonances; waveguide; band structure engineering; colloidal quantum dots; nanolaser; radially mid azimuthally polarization states
类别
资金
- 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
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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