noun
spectroscopic analysis
Technical term used in chemistry, physics, and astronomy for analyzing materials by their spectra.
この研究所では、分光分析を用いて未知の物質を調べている。
This laboratory uses spectroscopic analysis to examine unknown substances.
分光器 is a spectrometer (the instrument), while 分光分析 is the analytical method itself.
Compound of 分光 (spectroscopy, literally 'splitting light') and 分析 (analysis).