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Control of lasing from bloch states in microcavity photonic wires via selective excitation and gain

 
: Mischok, A.; Brückner, R.; Fröb, H.; Lyssenko, V.G.; Leo, K.; Zakhidov, A.A.

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Physical review applied 3 (2015), No.6, Art. 064016
ISSN: 2331-7019
Bundesministerium für Bildung und Forschung BMBF
03IP602
Deutsche Forschungsgemeinschaft DFG
LE 747/37-1
Deutsche Forschungsgemeinschaft DFG
LE747/41-1
European Commission EC
FP7-IDEAS-ERC; 267995; NUDEV
English
Journal Article
Fraunhofer FEP ()

Abstract
By adding photonic wire structures to an organic microcavity, we create an additional confinement and a Bloch-like band structure in the dispersion of periodically structured cavities. We experimentally observe spontaneous and stimulated emission from the ground and different excited discrete modes at room temperature. By changing the spatial gain distribution via a two-beam interference, we are able to directly control the laser emission from both extended and confined modes of such organic photonic wires. Both spatial distribution and dispersion exhibit coherent emission from tunable modes, which we describe with an analytical model and numerical simulations, in agreement with our measurements.

: http://publica.fraunhofer.de/documents/N-369660.html