TITLE

Photonic stopband tuning of organic semiconductor distributed feedback lasers by oblique angle deposition of an intermediate high index layer

AUTHOR(S)
Stroisch, M.; Teiwes-Morin, C.; Woggon, T.; Gerken, M.; Lemmer, U.; Forberich, K.; Gombert, A.
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p021112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We modified the photonic band structure of organic distributed feedback lasers by introducing a patterned high index intermediate layer of tantalum pentoxide. This layer was oblique angle evaporated onto one dimensional surface gratings with a periodicity of 400 nm. The dielectric broadened the stopband due to its high refractive index compared to both the substrate and the active layer. By tuning the layer thickness we could increase the stopband from 3 to 16 nm.
ACCESSION #
43277336

 

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