MProbe UVVisF measures the thickness and refractive index of thin films. It can work in high ambient light environment: in-situ, inline in R&D and production applications. This system is similar to MProbe UVVisSr system but has a shorter wavelength range weighted towards the UV wavelengths. It is designed for applications requiring fast measurement and long lamp life.This system can work in high ambient light environement (e.g. sputtering) because it is using gated acquisition of Xe lamp flashes (~2 µs).