The activities of the 'microlasers' sub-group is focused on two main issues: on one hand fundamental research on wave chaos and open systems, on the other hand practical applications like laser sources and bio/chemo-sensors.

These polymer based micro-lasers are made by UV photolithography and reactive plasma etching (RIE) in the clean room of the d'Alembert Institut. The single layer of the host polymer (eg. PMMA) is doped by a laser dye (eg. DCM, rhodamine) and is spin-coated on a silica on silicon wafer.

In the context of wave chaos, the micro-lasers can be considered as two dimensionnal billiards which cavity shape gives the kind of dynamical system (integrable, mixed, chaotic,...). The refractive losses are a way to study the influence of the external opening on the wave properties.

Using the fundamental results obtained in wave chaos and related to spectral or directionnal properties, we propose original devices based on these organic micro-lasers for various applications. For instance the group is involved in an european project (Strep micro-fluid) to make a new kind of chemo-sensor.