概要（Overview）

Illumina is a compact manual FT-IR system that belongs to a new class of innovative instruments for optical, non-contact measurements of epi wafers. With over 25 years of experience, it provides accurate and repeatable characterization of multi-layer, compound semiconductor wafer parameters such as epi thickness and doping concentration. This critically affects the performance of optoelectronic devices such as P-I-N and avalanche photodiodes, IR lasers, VCSELs, LEDs, and waveguides, allowing for higher yields and lower costs. Using state-of-the-art Fourier Transform Infrared technology and model-based analysis, epi thickness maps can be obtained in minutes on both test and product wafers. An optional small spot size minimizes edge exclusion.