Abstract
A GaInAsSb-AlGaAsSb large optical cavity triple-quantum-well structure was grown by molecular-beam epitaxy. Shallow mesa ridge-waveguide lasers with stripe width of 100 μm were fabricated and tested. An internal losses coefficient as low as 4 cm-1 and a high internal quantum efficiency of 70% were obtained. In the pulsed regime at room temperature, the extrapolated threshold current densities for infinite cavity length is 78 A/cm2. The threshold current density per quantum well is as low as 34 A/cm2 for a 3-mm-long cavity.
| Original language | English |
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| Pages (from-to) | 2424-2426 |
| Number of pages | 3 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 16 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2004 |
| Externally published | Yes |