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首页> 外文会议>2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference >Integrated optics beam combiner at 2.2µm for astronomical interferometers
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Integrated optics beam combiner at 2.2µm for astronomical interferometers

机译：集成式2.2微米光学光束组合器，用于天文干涉仪

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摘要

Integrated optics (IO) is a powerful alternative to classical bulk optics solutions in the context of interferometric combination for astronomy. Very recent results in the near infrared (1.5 to 1.8µm) [1] confirm that integrating a complex single-mode circuit on a small chip presents numerous advantages such as: compact size, stability and self-alignment. It has been demonstrated that a smart interferometric design presenting these assets is a key to reach accurate interferometric measurements [2]. As a consequence, IO technologies are of great interest for Gravity [3, 4], a second generation interferometric instrument that will combine four telescopes at the VLTI in the spectral band 2µm to 2.4µm. The instrument is developed to study general relativity effects around our galactic centre black hole. Its concept is based on two equivalent beam combiner instruments, one for scientific target, the other for freezing the atmospheric effects on the fringe patterns.
机译：在天文干涉测量组合的背景下，集成光学（IO）是传统大体积光学解决方案的有力替代方案。近红外（1.5至1.8µm）的最新结果[1]证实，在小芯片上集成复杂的单模电路具有许多优势，例如：紧凑的尺寸，稳定性和自对准性。已经证明，展示这些资产的智能干涉测量设计是实现精确干涉测量的关键[2]。因此，IO技术引起了Gravity [3，4]的关注，这是第二代干涉仪，它将在2µm至2.4µm的光谱带中的VLTI结合四个望远镜。该仪器的开发目的是研究银河系中心黑洞周围的广义相对论效应。它的概念基于两种等效的合束器仪器，一种用于科学目标，另一种用于冻结大气对条纹图案的影响。

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