Spectrally-quantified chemical reactivity of optical fluids and materials in the GMACS spectrograph for GMT

摘要

We present a preview of compatibility tests for index-matching fluids with commonly used optical assembly materials.Although we focus on fluid candidates for GMACS, the results of the conducted experiments are applicable to allinstruments that use optical index-matching fluids. The experiment presented here aims to identify potentially corrosivematchings of fluids and materials. In the experiment, a material (RTV, polyethylene, delrin, etc.) is submerged in aquartz cuvette of fluid (Cargille liquids, glycerin, etc.). Contamination is observed by using a spectrometer to measurethe absorption spectrum at various post-submersion times. The current results have large measurement errors comparedto the signal, and no contamination appears to have taken place. We detail the source of these errors and makesuggestions for similar future experiments.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.