Abstract
We report laser oscillation at ∼610nm in aggregates of ultrasmall elemental Si nanoparticles. The particles are ultrabright red emitting, dispersed from bulk Si by electrochemistry. The aggregates are excited by radiation at 550-570 nm from a mercury lamp. Intense directed Gaussian beams, with a threshold, manifest the emission. We observe line narrowing, and speckle patterns, indicating spatial coherence. This microlasing constitutes an important step towards the realization of a laser on a chip, hence optoelectronics integration and optical interconnects.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 121-123 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 80 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 7 2002 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)