论文标题

在存在部分自适应光学校正的情况下,穿过大气湍流进入几型纤维和光子灯笼的星光耦合

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

论文作者

Diab, Momen, Dinkelaker, Aline N., Davenport, John, Madhav, Kalaga, Roth, Martin M.

论文摘要

大气湍流损坏的星光无法有效地将基于集成光学器件的天文仪器融入到天文仪器中,因为它们需要高空间连贯性才能将它们搭配到单模波导中。与光子灯笼结合使用的低阶自适应光学器件提供了一种实用方法,可以将有效耦合到多重的天体设备中。我们在模拟和实验测试台的帮助下进行了调查,自适应光学系统的自由度与集成光学组件的输入波导的权衡之间的权衡,从而导致具有成本效益的混合系统,该混合系统实现了比单个模板纤维所提供的独立设备高的信噪比。

Starlight corrupted by atmospheric turbulence cannot couple efficiently into astronomical instruments based on integrated optics as they require light of high spatial coherence to couple into their single-mode waveguides. Low-order adaptive optics in combination with photonic lanterns offer a practical approach to achieve efficient coupling into multiplexed astrophotonic devices. We investigate, aided by simulations and an experimental testbed, the trade-off between the degrees of freedom of the adaptive optics system and those of the input waveguide of an integrated optic component leading to a cost-effective hybrid system that achieves a signal-to-noise ratio higher than a standalone device fed by a single-mode fiber.

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