标题： 一种用于会聚望远镜光束无狭缝分光光度法的透射全息图。 优化和表征 显示英文标题

标题： A transmission hologram for slitless spectrophotometry on a convergent telescope beam. Optimisation and characterization

摘要： 本文详细介绍了在2021年发表的配套论文中描述的全息图的优化和表征，该论文展示了全息光学元件在轴上探测器的会聚光束路径中作为色散元件相较于周期光栅的优势（非弯曲光谱仪）用于无狭缝光谱学。 在本文中，我们详细描述了安装在鲁宾-LSST天文台辅助望远镜（AuxTel）光谱仪上的最终光学全息元件的开发和优化过程。 在回顾了用作色散和聚焦元件的全息图的一般原理后，我们描述了用于确定AuxTel全息图最佳生产参数的技术资源——光学平台和天空测量以及建模工具，这些工具经过4个原型阶段的测试。 我们还描述了使用各种望远镜进行的现场验证和测量。 得益于这些技术，我们成功获得了第一阶的衍射效率，接近我们这种薄型全息图理论上可能的最大值。 该全息图自2021年2月起安装在AuxTel的光谱仪上，并且自那时以来一直表现良好，与适用于无狭缝光谱学的分析软件相结合。 显示英文摘要

摘要： This article details the optimisation and the characterisation of the hologram described in a companion paper published in 2021, which showed the superiority of a holographic optical element over a periodic grating as a disperser installed in the path of a converging beam on an on-axis detector (unbent spectrograph) for slitless spectroscopy. In this article, we describe in detail the development and optimisation of the final optical holographic element installed on the spectrograph of the auxiliary telescope (AuxTel) at the Rubin-LSST observatory. After recalling the general principle of a hologram used as a dispersing and focusing element, we describe the technical resources - optical bench and sky measurements - and modeling tools that enabled us to determine the optimum production parameters for the AuxTel hologram after 4 prototyping phases. We also describe the on-sky verifications and measurements carried out with various telescopes. Thanks to these various techniques, we have succeeded in obtaining a diffraction efficiency in the first order close to the maximum theoretically possible with our thin-type hologram. This hologram has been in place on AuxTel's spectrograph since February 2021, and has since given full satisfaction, coupled with analysis software adapted to slitless spectroscopy.