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ENS Cachan - Laboratoire de photonique quantique et moléculaire

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Research - Commercialisation

Organic micro-lasers

Components and Technology for photonics

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.

Micro-laser fabrication with organic materials

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.

Photograph of a stadium-shaped micro-laser through an optical microscop. Typical scale 100 µm.

Wave chaos and open systems

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.

Laser sources and bio/chemo-sensors

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.

Some collaborations

  • ENS Cachan: PPSM - Institut d'Alembert 
  • In France: 
   LPN (Christian Ulysse): fabrication by electron-beam
   Paris South University (Eugène Bogomolny - LPTMS)
   Paris North University (Sebastien Chenais and Sebastien Forget - LPL)
  • Abroad: Geogia Institut of Technology: Bernard Kippelen, Joseph Perry

Membres impliqués

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