Electrically pumped sub-wavelength metallo-dielectric pedestal pillar lasers
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Electrically driven subwavelength scale metallo-dielectric pedestal pillar lasers are designed and experimentally demonstrated. The metallo-dielectric cavity significantly enhances the quality factor (Q > 1500) of the wavelength and subwavelength scale lasers and the pedestal structure significantly reduces the threshold gain (< 400 cm−1) which can potentially enable laser operation at room temperature. We observed continuous wave lasing in 750 nm gain core radius laser at temperatures between 77 K and 140 K with a threshold current of 50 μA (at 77 K). We also observed lasing from a 355 nm gain core radius laser at temperatures between 77 K and 100 K.
| Original language | English |
|---|---|
| Pages (from-to) | 21524-21531 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 19 |
| Issue number | 22 |
| Early online date | 18 Oct 2011 |
| DOIs | |
| Publication status | Published - 24 Oct 2011 |