Integrated optics for nulling interferometry in the thermal infrared

  • Marc Barillot, Eleonore Barthelemy, Jean-Emmanuel Broquin, Jérôme Frayret, Jérôme Grelin, Gary Hawkins, Volker Kirschner, Gilles Parent, Annie Pradel, Emmanuel Rossi, Caroline Vigreux, Shaoqian Zhang, Xianghua Zhang
  • July 2008, SPIE
  • DOI: 10.1117/12.789378

Infrared coatings in the search for exoplanets

What is it about?

Nulling interferometry in the thermal Infrared [6-20µm] range is well known to be a major candidate technology for the detection and spectrometry of extra-Solar Earth-like planets, thanks to its huge starlight rejection and angular resolution potential.

Why is it important?

In the past years, quite remarkable achievements have been made in the development and validation of the necessary technology and specific components. However, despite the availability of preliminary prototypes, the issue of modal filters still remains an open investigation field, since to our knowledge a modal filtering component or family of components capable of meeting all the requirements of the mission in the whole spectral range is still to be fabricated.


Dr Gary J Hawkins
University of Reading

The design and fabrication of broadband antireflection coatings for the Integrated Optics (IO) activity requires high transparency throughout the long wave thermal 10-20 µm waveband.

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The following have contributed to this page: Dr Gary J Hawkins