论文标题
ESO立方体紫外线光谱仪的高效率传输光栅
High efficiency transmission grating for the ESO CUBES UV spectrograph
论文作者
论文摘要
立方体是Cassegrain U波段有效的光谱仪，这是一种在300nm至400nm之间运行的高效仪器，分辨率不少于20000。本文简要回顾了用作天文学光谱仪中分散元素的各种类型的设备，以实现高分辨率，然后识别由微观石刻产生的二进制传输光栅作为立方体仪器的最佳候选技术。我们一般描述了光刻制造技术，两种不同的设计考虑因素，以实现所需的高分辨率变速器光栅，通过直接写石刻制造技术的原型制作以及实现的光学性能的表征。考虑到最新仪器的光栅仪表的前景，考虑了印刷写作能力的最新发展。
CUBES is the Cassegrain U-Band Efficient Spectrograph, a high-efficiency instrument operating in the UV spectral range between 300nm and 400nm with a resolution not less than 20000. CUBES is to be installed at a Cassegrain focus of the Very Large Telescope of the European Southern Observatory. The paper briefly reviews various types of devices used as dispersing elements in astronomical spectrographs to achieve high resolution, before identifying binary transmission gratings produced by microlithography as the best candidate technology for the CUBES instrument. We describe the lithographic fabrication technology in general, two different design considerations to achieve the required high-resolution transmission grating, its prototyping by a direct-write lithographic fabrication technology, and the characterization of the achieved optical performance. An outlook to the realization of the grating for the final instrument, taking the most recent developments of lithographic writing capabilities into consideration is given.
