TITLE

Quantum cascade lasers with lateral double-sided distributed feedback grating

AUTHOR(S)
Golka, S.; Pflügl, C.; Schrenk, W.; Strasser, G.
PUB. DATE
March 2005
SOURCE
Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p111103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Midinfrared single mode emission, up to 20 °C, for a distributed feedback structure consisting of lateral index variation on both sides of a rib waveguide is achieved on a quantum cascade laser. Fabrication was made possible by a high density plasma process developed for high aspect ratio etching of GaAlAs/GaAs structures. A lateral grating considerably enhances design freedom by decoupling the vertical waveguide structure from the grating strength. The grating coupling, now being mainly determined by waveguide width, can then be exploited for device applications.
ACCESSION #
16581665

 

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