Development of a Fiber Connectorized Ultrafast Laser Inscribed 2-Telescope Beam Combiner for the CHARA Telescope Array
Development of a Fiber Connectorized Ultrafast Laser Inscribed 2-Telescope Beam Combiner for the CHARA Telescope Array
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为 CHARA 望远镜阵列开发光纤连接器超快激光内刻 2 望远镜光束组合器
DOI：
10.1109/cleo/europe-eqec57999.2023.10231460
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Benoît A
中科院分区：
文献类型：
--
作者：
Benoît A
在Chara阵列和VLTI等设施中使用长基线光学干涉测量，可以使角度分辨率大大超过单个望远镜所提供的分辨率。因此，长基线光学干涉术是许多天文学领域的关键技术[1]。操作干涉仪的一个关键部件是组束器，它以干涉的方式将各个望远镜收集的光组合在一起。波束合并器通常是使用整体光学构造的，但随着阵列中望远镜数量的增加，这变得越来越具有挑战性。解决这一问题的一种方法是开发基于集成光学的光束合成器，其中使用集成光学(IO)波导来路由和合成光。这种“天体光子”光束合成器已经取得了令人印象深刻的结果，在重力等仪器中发挥了关键作用。鉴于IO波束合成器的优势现已得到认可，人们对开发能够提供先进的波束合成能力的IO波束合成器非常感兴趣，例如，在中IR中有效地操作。由于缺乏适合用传统光刻工艺开发中红外IO电路的材料，超快激光刻写(ULI)作为一种IO合束器制造工艺的探索，因为它可以用于生产各种玻璃的光波导[4]。
Long baseline optical interferometry, at facilities such as the CHARA array and the VLTI, can facilitate angular resolutions that significantly exceed those provided by a single telescope. As such, long baseline optical interferometry is a key technique in many areas of astronomy [1]. One key component of an operational interferometer is the beam combiner, which interferometrically combines the light collected by the individual telescopes. Beam combiners are usually constructed using bulk optics, but this becomes increasingly challenging as the number of telescopes in the array increases. One approach to solve this is to develop beam combiners based on integrated optics, where the light is routed and combined using integrated optic (IO) waveguides. Such “astrophotonic” beam combiners have already enabled impressive results, playing a key role in instruments such as GRAVITY [2]. Given that the advantages of IO beam combiners are now acknowledged, there is significant interest in developing IO beam combiners that can provide advanced beam combination capabilities eg, efficient operation in the mid-IR. The lack of materials suitable for developing IO circuits in mid-IR with the traditional lithographic processes, has driven the exploration of ultrafast laser inscription (ULI) as an IO beam combiner manufacturing process, since it can be used to produce optical waveguides in a wide range of glasses [4].
用于重力的单模波导
影响因子：
6.5
作者：
K. Perraut;L. Jocou;J. P. Berger;A. Chabli;V. Cardin;G. Chamiot;A. Delboulbé;F. Eisenhauer;Y. Gambérini;S. Gillessen;S. Guieu;J. Guerrero;M. Haug;F. Haussmann;F. Joulain;P. Kervella;P. Labeye;S. Lacour;C. Lanthermann;V. Lapras;J. L. Bouquin;M. Lippa;Y. Magnard;T. Moulin;P. Noël;A. Nolot;F. Patru;Guy Perrin;O. Pfuhl;S. Pocas;S. Poulain;C. Scibetta;E. Stadler;R. Templier;N. Ventura;C. Vizioz;A. Amorim;Wolfgang Brandner;C. Straubmeier
通讯作者：
C. Straubmeier