A laser ranging method dedicated to path lengths equalization in diluted telescopes

Michel Lintz (1) , Clément Courde (1)

1 ARTEMIS - Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux

When implementing a diluted telescope with large dimensions, one has to reach the equal path condition to the different segments of the primary mirror. In this work we suggest a way to implement a fast laser ranging method able to provide the error signal, using phase detection of the microwave modulation of a laser beam.

Domaines: Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]; Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]

Michel Lintz, Clément Courde. A laser ranging method dedicated to path lengths equalization in diluted telescopes. OHP2013 Colloquium: Improving the performances of current optical interferometers & future designs, Sep 2013, Saint Michel L'Observatoire, France. pp.73-77. ⟨hal-01058888⟩