Abstract
The resonance patterns and lasing modes in a spiral-shaped dielectric microcavity are investigated through passive and active medium calculations. We find that the high-Q resonance modes are whispering-gallery-like modes, and these resonance modes can be easily excited as lasing modes. We also find that the quasi-scarred resonance mode, which shows strong directional emission beams from the cavity boundary, can be excited with selectively applied external pumping. Through a spectral analysis of the time evolution of the light field, the competition between these lasing modes is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 1250-1252 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 31 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1 May 2006 |