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Starlight corrupted by atmospheric turbulence cannot couple efficiently intoastronomical instruments based on integrated optics as they require light ofhigh spatial coherence to couple into their single-mode waveguides. Low-orderadaptive optics in combination with photonic lanterns offer a practicalapproach to achieve efficient coupling into multiplexed astrophotonic devices.We investigate, aided by simulations and an experimental testbed, the trade-offbetween the degrees of freedom of the adaptive optics system and those of theinput waveguide of an integrated optic component leading to a cost-effectivehybrid system that achieves a signal-to-noise ratio higher than a standalonedevice fed by a single-mode fiber.

Starlight coupling through atmospheric turbulence into few-mode fibers and photonic lanterns in the presence of partial adaptive optics correction