Precise determination of high metallic reflection in the far-infrared: The reflection-Fabry-Perot

摘要

We demonstrate in theory and experiment the use of a reflective Fabry-Perot interferometer to precisely determine the far-infrared reflectance of smooth metal surfaces. The absorption loss in the metal is amplified and thus conveniently measuredon resonancewhereas the 100 reflectance reference is takenoff resonance. Absolute accuracy of ±0.1 is achievable