title: First On-Sky Fringes with an Up-Conversion Interferometer Tested on a Telescope Array.
abstract: The Astronomical Light Optical Hybrid Analysis project investigates the combined use of a telescope array interferometer and nonlinear optics to propose a new generation of instruments dedicated to high-resolution imaging for infrared astronomy. The nonlinear process of optical frequency conversion transfers the astronomical light to a shorter wavelength domain. Here, we report on the first fringes obtained on the sky with the prototype operated at 1.55  μm in the astronomical H band and implemented on the Center for High Angular Resolution Astronomy telescope array. This seminal result allows us to foresee a future extension to the challenging midinfrared spectral domain.
authors.affiliation: Xlim, Photonics Department, UMR CNRS 7252, 123 av. Albert Thomas, 87060 Limoges, France.
authors.forename: P
authors.initials: P
authors.lastname: Darré
authors.affiliation: Xlim, Photonics Department, UMR CNRS 7252, 123 av. Albert Thomas, 87060 Limoges, France.
authors.forename: R
authors.initials: R
authors.lastname: Baudoin
authors.affiliation: Xlim, Photonics Department, UMR CNRS 7252, 123 av. Albert Thomas, 87060 Limoges, France.
authors.forename: J-T
authors.initials: JT
authors.lastname: Gomes
authors.affiliation: The CHARA Array, Mt. Wilson Observatory, Mt. Wilson, California 91023, USA.
authors.forename: N J
authors.initials: NJ
authors.lastname: Scott
authors.affiliation: Xlim, Photonics Department, UMR CNRS 7252, 123 av. Albert Thomas, 87060 Limoges, France.
authors.forename: L
authors.initials: L
authors.lastname: Delage
authors.affiliation: Xlim, Photonics Department, UMR CNRS 7252, 123 av. Albert Thomas, 87060 Limoges, France.
authors.forename: L
authors.initials: L
authors.lastname: Grossard
authors.affiliation: The CHARA Array, Mt. Wilson Observatory, Mt. Wilson, California 91023, USA.
authors.forename: J
authors.initials: J
authors.lastname: Sturmann
authors.affiliation: The CHARA Array, Mt. Wilson Observatory, Mt. Wilson, California 91023, USA.
authors.forename: C
authors.initials: C
authors.lastname: Farrington
authors.affiliation: Xlim, Photonics Department, UMR CNRS 7252, 123 av. Albert Thomas, 87060 Limoges, France.
authors.forename: F
authors.initials: F
authors.lastname: Reynaud
authors.affiliation: The CHARA Array, Mt. Wilson Observatory, Mt. Wilson, California 91023, USA.
authors.forename: T A Ten
authors.initials: TA
authors.lastname: Brummelaar