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Keynote M-T. Velluet

Keynote addresses will be delivered to set the underlying tone and summarize the core message. These speeches will be done by specialists from laboratories and international companies recognized for their expertise in the field.

Turbulence profile with MATISSE and applications
Marie-Thérèse Velluet
ONERA, The French Aerospace Lab, France

Optical turbulence in the atmosphere reduces the performance of electro-optical systems. This includes passive and active imaging, free-space optical communication, directed energy laser systems. Since the evaluation of vertical turbulence profiles is implemented in MATISSE, it is possible to get an idea of the impact of turbulence on performance of such a system under specific environmental conditions depending on the location, time of day, type of soil, terrain…

This keynote will present this new functionality of MATISSE and give some examples on how the derived turbulence parameters can inform the user about the degradation of the system performance.

 

References:

  • Biérent, R., Velluet, M. T., Védrenne, N., & Michau, V. (2013). Experimental demonstration of the full-wave iterative compensation in free space optical communications. Optics Letters, 38(13), 2367-2369.

  • Camboulives, A. R., Velluet, M. T., Poulenard, S., Saint-Antonin, L., & Michau, V. (2018). Statistical and temporal irradiance fluctuations modeling for a ground-to-geostationary satellite optical link. Applied optics, 57(4), 709-721.

  • Velluet, M-T., et al. "Data collection and preliminary results on turbulence characterisation and mitigation techniques." Electro-Optical and Infrared Systems: Technology and Applications XVI. Vol. 11159. International Society for Optics and Photonics, 2019.

  • Velluet, Marie-Thérése, et al. "Turbulence characterization and mitigation with Adaptive Optics systems for laser applications." Propagation Through and Characterization of Atmospheric and Oceanic Phenomena. Optical Society of America, 2021.

     

 

 

Marie-Thérèse Velluet graduated from Institut d’Optique Graduate School in 1981. She has been working for ONERA (the French Aerospace Lab) since 1992. She is a senior scientist with more than 20 years’ research experience in optical propagation through turbulence and wavefront sensing in the context of defense and telecommunications. She manages activities on imaging and laser focusing through turbulence including strong turbulence. She proposed simplified models to include turbulence effects in optical system simulators, participated in experimental validation of these models and has experience in system performance evaluation.
For more than 10 years, she has been the chairman of a NATO group on “Turbulence mitigation for electro-optic and laser systems”.