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About: Interband cascade laser     Goto   Sponge   NotDistinct   Permalink

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Type: yago:WikicatLightSourcesyago:WikicatSemiconductorDevicesyago:WikicatSemiconductorLasersyago:Artifact100021939yago:Conductor103088707yago:Device103183080yago:Instrumentality103575240yago:Laser103643253yago:Light103665366yago:Object100002684yago:OpticalDevice103851341yago:PhysicalEntity100001930yago:SemiconductorDevice104171831yago:SourceOfIllumination104263760yago:Whole100003553 New Facet based on Instances of this Class

Interband cascade lasers (ICLs) are a type of laser diode that can produce coherent radiation over a large part of the mid-infrared region of the electromagnetic spectrum. They are fabricated from epitaxially-grown semiconductor heterostructures composed of layers of indium arsenide (InAs), gallium antimonide (GaSb), aluminum antimonide (AlSb), and related alloys. These lasers are similar to quantum cascade lasers (QCLs) in several ways. Like QCLs, ICLs employ the concept of bandstructure engineering to achieve an optimized laser design and reuse injected electrons to emit multiple photons. However, in ICLs, photons are generated with interband transitions, rather than the intersubband transitions used in QCLs. Consequently, the rate at which the carriers injected into the upper laser subb