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Non linear materials and applications

Non linear materials and applications

Group leader : Gilles Pauliat, Contact

Nonlinear optics addresses all the modifications induced by, and on, light beams in interaction with matter. These interactions lead to dramatics behaviours: creation of new wavelengths, modification of the light intensity and trajectories, appearance of space-time structures…

The functions and components imaginable with these nonlinearities are numerous in multiple aspects of our societies: medicine and more generally bio-medicine, optical communications and especially quantum telecommunications, sensors, data processing and storage…

Our approach to reinforce and adapt the nonlinear optical interactions to these various domains consists in structuring the materials on scales close to the optical wavelength. Moreover, the hybridization obtained by combining in a single device the advantages of various materials (silica-liquid, silicon-polymer) is a further refinement. By improving the performances, this hybridization opens new areas to both research and applications.

Our vision of data processing by nonlinear optics in these optimized structures allows us mastering the whole chain from the physics of nonlinear interaction until the implementation of new devices contributing to possible new answers to the societal issues: energetic issues, the anticipated loss of all numerical data, …

By following this approach, we are quite naturally conducted to transfer concepts and devices to the industrial world. Our wavelength converters, called Rambio converters, are such an example: they allow to easily adapting the wavelength of micro-laser to specific domains such as dermatology or oncology.