A low-threshold 7.3 μm superlattice-based quantum cascade laser with 3.4 kA/cm2 threshold current density at 300 K is grown using gas-source molecular beam epitaxy. >100 mW peak output power is observed for a 20 μm×2 mm stripe with 153 mW/A slope efficiency of 650 mW/A and low sensitivity to temperature changes is evidenced at 210 K high characteristic temperature.
|Original language||English (US)|
|Number of pages||3|
|Journal||Applied Physics Letters|
|State||Published - May 10 1999|
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)