Abstract
Transverse frequency conversion in the sub-bandgap spectral region is investigated in semiconductor nanowires and nanoribbons using CW lasers with a pump power less than 1 mW. It is found that the properties of the emissions are strongly dependent on the cross-sectional geometries and the surrounding media of nano-waveguides. The polarization is higher in nano-waveguides under single-mode conditions, and the spatial distribution is more tunable in nano-waveguides with higher-order modes involved. Compared with the birefringent approach, transverse frequency conversion shows lower divergence angles, higher polarization, and more tunable spatial distribution.
| Original language | English |
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| Pages (from-to) | 12371-12375 |
| Number of pages | 5 |
| Journal | Nanoscale |
| Volume | 6 |
| Issue number | 21 |
| DOIs | |
| State | Published - 7 Nov 2014 |