TITLE

Step well quantum cascade laser emitting at 3 THz

AUTHOR(S)
Scalari, Giacomo; Amanti, Maria I.; Fischer, Milan; Terazzi, Romain; Walther, Christoph; Beck, Mattias; Faist, Jérôme
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/26/2009, Vol. 94 Issue 4, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A quantum cascade laser based on a three well active module and emitting at 3 THz is demonstrated. The optical transition is vertical in real space and localized in an Al0.03Ga0.97As quantum well. Maximum operating temperature of 123 K in pulsed mode is reported, with threshold current densities as low as 110 A/cm2 at 10 K and 175 A/cm2 at 100 K. High slope efficiency values testify the good internal quantum efficiency of the structure.
ACCESSION #
36434994

 

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