High-speed operation of gain-switched midinfrared quantum cascade lasers
- 19 October 1999
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 75 (17) , 2536-2538
- https://doi.org/10.1063/1.125069
Abstract
We report on a simple technique for the generation of short pulses of midinfrared (5 and 8 μm) radiation, based on gain-switched quantum cascade lasers. In particular, an integrated step-recovery diode source (comb generator) is used to drive the lasers, properly packaged for high-speed operation. Using a fast HgCdTe detector, we measure optical pulses with duration as short as 200 ps, broadened by the detector response time, and peak power of a few tens of mW. The maximum operating temperature of these gain-switched sources is approximately 120 K.Keywords
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