爱因斯坦望远镜干涉仪臂扩束望远镜的可行性研究
Feasibility study of beam-expanding telescopes in the interferometer arms for the Einstein Telescope
摘要：
爱因斯坦望远镜（ET）的光学设计是基于一个双循环的迈克耳孙干涉仪与法布里-珀罗腔的武器。ET将在一个新的基础设施中建造，使我们能够考虑超越现有设施限制的不同技术实现。在本文中，我们探讨了在干涉仪臂中使用扩束望远镜的可行性。我们提供了一个与ET设计更新2020中提出的光学布局相匹配的示例实现。我们进一步表明，扩束望远镜可以调整，以补偿臂腔和干涉仪的其余部分之间的模式失配。
英文摘要：
The optical design of the Einstein Telescope (ET) is based on a dual-recycled Michelson interferometer with Fabry-Perot cavities in the arms. ET will be constructed in a new infrastructure, allowing us to consider different technical implementations beyond the constraints of the current facilities. In this paper we investigate the feasibility of using beam-expander telescopes in the interferometer arms. We provide an example implementation that matches the optical layout as presented in the ET design update 2020. We further show that the beam-expander telescopes can be tuned to compensate for mode mismatches between the arm cavities and the rest of the interferometer.
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