Safe and Easy Cleaning of Astronomical Mirrors with UV Lasers

将进行可行性研究，以确定是否 准分子激光器可用于清洁铝涂层镜样品 被典型的污染物所污染， 天文镜 列出了此计划的具体任务 下面 激光清洗实验室，用于清洗镜面样品， 应建立衡量技术有效性的标准。 镀铝镜面样品应人为污染 通常在天文镜周围发现污染物（例如， 来自Manuna Kea和Arizona的沙尘）和UV激光清洁。 的 清洁参数（例如激光能量密度、每个部位的发射次数） 以确定最佳清洁度 procedure. 应在测量前测量镜面反射率 污染、污染后和激光清洁后。 镀铝镜样品应分发给选定的 天文观测站暴露在同样的污染物中 主镜所经历的。 这些镜像样本应 返回进行激光清洁测试。 的反射率 镜像样本应在运输至 天文台在收到受污染的镜子样本后， 激光清洗后。

A feasibility study will be conducted to determine whether UV excimer lasers can be used to clean aluminum-coated mirror samples that have been contaminated by typical contaminants found on astronomical mirrors. Specific tasks for this program are listed below. A laser cleaning laboratory for cleaning the mirror samples and measuring the effectiveness of the technique shall be set up. Aluminum-coated mirror samples shall be artificially contaminated with contaminants typically found around astronomical mirrors (e.g. sand dust from Manuna Kea and Arizona) and UV laser cleaned. The cleaning parameters (e.g. laser fluence, number of shots per site) shall be varied in order to determine the optimum cleaning procedure. The mirror reflectivity shall be measured before contamination, after contamination, and after laser cleaning. Aluminum-coated mirror samples shall be distributed to selected astronomical observatories to be exposed to the same contaminants that the primary mirror experiences. These mirror samples shall be returned for laser cleaning tests. The reflectivity of the mirror samples shall be measured before shipping to the observatories, after receiving the contaminated mirror samples, and after laser cleaning.