TITLE

Low threshold edge emitting polymer distributed feedback laser based on a square lattice

AUTHOR(S)
Vasdekis, A. E.; Turnbull, G. A.; Samuel, I. D. W.; Andrew, P.; Barnes, W. L.
PUB. DATE
April 2005
SOURCE
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p161102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the demonstration of a low-threshold, edge-emitting polymer distributed feedback laser based on a square lattice. The lattice constant was 268 nm, which corresponds to a lattice line spacing in the ΓM symmetry direction of the Brillouin zone of 189 nm. The latter was employed to provide feedback at 630 nm via a first order diffraction process. The device operated on two longitudinal modes, which were situated on the band-edge near the M symmetry point. The two modes had thresholds of 0.66 nJ and 1.2 nJ—significantly lower than comparable surface-emitting DFB lasers. Angle dependent photoluminescence experiments were performed to investigate the effect of the square lattice on the laser operation and the origin of the low threshold.
ACCESSION #
17227523

 

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