optical constants

https://doi.org/10.1351/goldbook.08651
Collective name for the real refractive index, \(n\) and the absorption index (imaginary refractive index), \(k\).
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 758 [Terms] [Paper]