Abstract
We demonstrate low-threshold lasing at 4 K in optically pumped hemispherical In0.2Ga0.8As single-quantum-well microcavities. The incident threshold pump power density is 11 kW/cm2 corresponding to an absorbed power density of about 320 W/cm2, and the measured spontaneous emission factor β is about 0.01.
| Original language | English |
|---|---|
| Pages (from-to) | 443-445 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 62 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1993 |
| Externally published | Yes |