Abstract
The authors present high-power continuous-wave (cw) operation of distributed-feedback quantum-cascade lasers. Continuous-wave output powers of 56 mW at 25 °C and 15 mW at 40 °C are obtained. Single-mode emission near 7.8 μm with a side-mode suppression ratio of 30 dB and a tuning range of 2.83 cm-1 was obtained between 15 and 40 °C. The device exhibits no beam steering with a full width at half maximum of 27.4° at 25 °C in cw mode.
Original language | English (US) |
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Article number | 251119 |
Journal | Applied Physics Letters |
Volume | 89 |
Issue number | 25 |
DOIs | |
State | Published - 2006 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)