High-speed operation of gain-switched midinfrared quantum cascade lasers

被引:32
作者
Paiella, R [1 ]
Capasso, F [1 ]
Gmachl, C [1 ]
Bethea, CG [1 ]
Sivco, DL [1 ]
Baillargeon, JN [1 ]
Hutchinson, AL [1 ]
Cho, AY [1 ]
机构
[1] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA
关键词
D O I
10.1063/1.125069
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on a simple technique for the generation of short pulses of midinfrared (5 and 8 mu m) 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. (C) 1999 American Institute of Physics. [S0003-6951(99)05243-2].
引用
收藏
页码:2536 / 2538
页数:3
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