Abstract
Pulsed single mode operation of distributed feedback quantum cascade lasers is reported above room temperature at both 5.4 and 8 μm wavelengths. Peak optical powers up to 60 mW at 300 K are obtained with a tuning range of ∼60 nm from 100 to ∼320 K. The linewidth is limited by thermal drift during the pulse with a typical value of 0.3 cm-1 for a 10 ns long pulse at 300 K.
Original language | English (US) |
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Pages (from-to) | 2670-2672 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 70 |
Issue number | 20 |
DOIs | |
State | Published - May 19 1997 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)