用于天文和空间应用的多面自由形态整体光学器件

IF 2.2 3区 物理与天体物理 Q2 OPTICS
Sumit Kumar, Wenbin Zhong, Prashant Kumar, Paul Scott, Xiangqian Jiang, Wenhan Zeng
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引用次数: 0

摘要

在紧凑型卡塞格伦配置设计中使用多面自由形态单片(MFFM)组件,可为各种下一代科学仪器提供前所未有的能力。MFFM 组件的概念可应用于紫外线、光学、红外线、太赫兹、微波甚至无线电频率的望远镜中。MFFM 在空间光学和天文系统中也有应用,其风险与飞行光学终端和仪器的校准、可制造性和维护大尺寸孔径、大量组件、成本和体积有关。目前,中频多面镜在制造阶段面临的挑战是每个表面与光轴的精确定位以及保持所需的边缘厚度。本文介绍了 MFFM 的光学设计、制造、测量和实验室表征。通过超精密单点金刚石车削(SPDT)和涂层进行原型制作的结果表明,按照尺寸和重量要求生产这些元件是可行的。实验结果表明,自由形态单体的每个表面都具有纳米级表面粗糙度和接近亚微米级形状精度的优异表面质量。通过聚焦性能和成像性能验证了设计和制造的精密部件。其主要贡献在于优化了制造工艺,为快速光学系统制造出精密的 MFFM,同时平衡了对准误差。所展示的研究工作凸显了单片机令人感兴趣的可能性,并为使用巨大光学系统的领域(如天体物理学研究、行星观测、地球监测和地球科学)的研究开辟了新途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multi-facial freeform monolith optics for astronomical and space applications
The utilization of a multi-facial freeform monolithic (MFFM) component in a compact Cassegrain configuration design offers unprecedented capabilities to accommodate various next-generation science instruments. The concept of the MFFM component can be employed for applications in telescopes working at ultra-violet, optical, infrared, terahertz, microwave, and even radio frequencies. MFFM finds its scope in space optical and astronomical systems where the risks are associated with the alignment, manufacturability, and maintaining large-sized apertures, large number of components, cost, and volume of the flight optical terminals and instruments. The current challenges faced at the manufacturing phase of MFFM are the precision positioning of each surface concerning the optical axis and maintaining the required edge thickness. This paper presents the optical design, fabrication, measurement, and in-laboratory characterization of MFFM. The results of a prototyping effort through ultra-precision single-point diamond turning (SPDT) and coating demonstrate the feasibility of producing these elements as per size and weight requirements. The experimental results show excellent surface qualities in terms of nanometric surface roughness and close-to-submicron form accuracy on each surface of the freeform monolith. Focusing performance and imaging performance are carried out to validate the designed and manufactured precision component. The main contribution is highlighted in terms of the optimized fabrication process for producing the precision MFFM for a fast optical system while balancing the alignment errors. The demonstrated research work highlights the intriguing possibilities of the monolith and creates new avenues for research in domains that use huge optical systems, such as astrophysical study, planetary observation, earth monitoring, and geosciences.
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来源期刊
Optics Communications
Optics Communications 物理-光学
CiteScore
5.10
自引率
8.30%
发文量
681
审稿时长
38 days
期刊介绍: Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.
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