Main research topics

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Novel organic laser resonators

The choice of a given resonator is of crucial importance for any kind of laser. For Organic ones, planar waveguides or microcavities are widely used. We introduced and study Vertical External Cavity Surface-emitting Organic Lasers (VECSOLs) and investigate the influence of the resonator properties on the laser dynamics and performances.

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New materials for organic lasers

Organic laser performances are often limited by the photophysical properties of the dye or semiconductor used. We work in collaboration with organic chemists to have a deeper look on this interplay and to design novel molecules potentially able to produce improved lasing properties.

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Organic laser Theory and modeling

We are working on a relatively simple theoretical model of organic lasing, in order to extract some photophysical constants from experiments (photolminescence, lasing) and to study in details the influence of the resonator and/or each bi- molecular process on the laser pulse duration for example.

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Light concentrators

Light concentrators are very simple optical devices able to enhance the brightness of any light source through wavelength conversion (absorbtion/fluorescence). We work on the use of such devices, organic or inorganic, to get high brightness LED systems for illumination purposes, or to be used as pump to excite inorganic lasers.

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Miscelleanous

The physics of organic emitter is very rich: we are also interested in polarization issues in VECSOLs, polaritonic lasing in microcavities, lifetime studies, use of liquid/solid gain medium...