Abstract
We describe results obtained with a new type of GaSb-based semiconductor distributed feedback multiple quantum well lasers operating in continuous-wave mode at room temperature and above. The lasers show good tunability both by the excitation current and the temperature from -1°C to +60°C (4170 to 4360 cm-1). They operate in a high-power (more than 1 mW) single-mode regime and can be tuned without hopping in the methane and ammonia absorption spectral range of up to 15 cm-1. Application to photoacoustic detection is also described. Potential use lies in the areas of analytical chemistry of gases and in atmospheric pollution research.
| Original language | English |
|---|---|
| Pages (from-to) | 857-861 |
| Number of pages | 5 |
| Journal | Applied Physics B: Lasers and Optics |
| Volume | 81 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Oct 2005 |
| Externally published | Yes |