Colloidal PbSe quantum dot-solution-filled liquid-core optical fiber for 1.55 μm telecommunication wavelengths

We have studied the optical properties of PbSe colloidal quantum dot-solution filled hollow core multimode silica waveguides as a function of quantum dot-solution concentration, waveguide length, optical pump power and choice of organic solvent in order to establish the conditions to maximize near i...

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Bibliographic Details
Published in:Nanotechnology 2014-03, Vol.25 (10), p.105704-105704
Main Authors: Zhang, Lei, Zhang, Yu, Kershaw, Steve V, Zhao, Yanhui, Wang, Yu, Jiang, Yongheng, Zhang, Tieqiang, Yu, William W, Gu, Pengfei, Wang, Yiding, Zhang, Hanzhuang, Rogach, Andrey L
Format: Article
Language:English
Subjects:
1.55
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Electronics
Exact sciences and technology
guided spontaneous emission
liquid-core optical fiber
m emission
Materials science
Molecular electronics, nanoelectronics
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
PbSe quantum dots
Physics
Quantum dots
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary:We have studied the optical properties of PbSe colloidal quantum dot-solution filled hollow core multimode silica waveguides as a function of quantum dot-solution concentration, waveguide length, optical pump power and choice of organic solvent in order to establish the conditions to maximize near infrared spontaneous emission intensities. The optical performance was compared and showed good agreement with a simple three level system model for the quantum dots confined in an optical waveguide. Near infrared absorption-free solvent of tetrachlorethylene was confirmed to be a good candidate for the waveguide medium due to the enhancement of output intensity from the liquid-core fiber compared to the performance in toluene-based fiber. This approach demonstrates a useful method for early characterization of quantum dot materials in a waveguide test-bed with minimal material processing on the colloidal nanoparticles.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/25/10/105704