Abstract
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. © 2014 IOP Publishing Ltd.
| Original language | English |
|---|---|
| Article number | 105704 |
| Journal | Nanotechnology |
| Volume | 25 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 14 Mar 2014 |
Research Keywords
- 1.55 μm emission
- guided spontaneous emission
- liquidcore optical fiber
- PbSe quantum dots