Maryland's Defense Patent Database

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High-temperature interband cascade lasers

Patent image
NRL

An interband cascade gain medium is provided. The gain medium can include at least one thick separate confinement layer comprising Ga(InAlAs)Sb between the active gain region and the cladding and can further include an electron injector region having a reduced thickness, a hole injector region comprising two hole quantum wells having a total thickness greater than about 100 Å, an active gain quantum well region separated from the adjacent hole injector region by an electron barrier having a thickness sufficient to lower a square of a wavefunction overlap between a zone-center active electron quantum well and injector hole states, and a thick AlSb barrier separating the electron and hole injectors of at least one stage of the active region.

Inventors: 
Vurgaftman, Igor; Meyer, Jerry R.; Canedy, Chadwick Lawrence; Bewley, William W.; Lindle, James R.; Kim, Chul-soo; Kim, Mijin
Patent Number: 
Technical domain: 
Materials and Coatings
FIle Date: 
2012-01-19
Grant Date: 
2013-07-23
Grant time: 
551 days
Grant time percentile rank: 
10
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY