Berlin 2012 – scientific programme

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DF: Fachverband Dielektrische Festkörper

DF 6: Application of dielectric solids

DF 6.3: Talk

Monday, March 26, 2012, 17:30–17:50, EB 107

Voltage tunable polymer laser device — •Matthias Kollosche¹, Sebastian Döring², Joachim Stumpe², and Guggi Kofod¹ — ¹ACMP, Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany — ²Fraunhofer Institute for Applied Polymer Research, PPC, Geiselbergstr. 69, Potsdam-Golm, 14476, Germany

Organic laser materials offer a broad optical gain spectra they are predestined for the realization of tunable laser sources. Here we report on a compact organic laser device that allows for voltage controlled continuous wavelength tuning in the visible range of the spectrum without the usage of an external motion control. The compact optical element consists of an elastomeric distributed feedback (DFB) laser and an electro active elastomer actuator also known as artificial muscle. To enable direct wavelength tuning the elastomer laser is placed in the centre of the prepared actuator. The chosen configuration geometry and electrode distribution of the elastomeric actuator gives rise to homogeneous compression in the centre of the actuator. The voltage induced deformation of the artificial muscle is transferred to the elastomeric laser and results in a decrease of grating period. This leads to an emission wavelength shift of the elastomer laser. The increase of actuation voltage to 3.25 kV decreased the emission wavelength of the laser device from 604 nm to 557 nm, a change of 47 nm or 7.8%.