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Injectorless quantum-cascade lasers
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DOI：10.1063/1.1378805.png)
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An injectorless quantum-cascade (QC) laser is presented. The requirement of using injector regions to transport electrons from the lower laser level and other low-lying energy levels of one active region to the upper laser level of the next electron-downstream active region was eliminated by using an appropriately designed double-quantum-well chirped superlattice active region. The major advantage of the injectorless QC laser is the close packing of the active regions and the concomitant large optical confinement factor. Using a cascade of 75 consecutive active regions, designed for emission at lambda = 11.5 mum, a pulsed peak output power of 270 mW is achieved at 7 K and approximately 10 mW at the maximum operating temperature of 195 K. (C) 2001 American Institute of Physics.
Keyword:
MU-M
PERFORMANCE
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3.6
论文数:
10.4W
被引数:
17.8W
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