概要（Overview）

The Opti-Probe 3290 is a thin film measurement system that uses Beam Profile Reflectrometry (BPR) for thick dielectric films greater than 500A and Beam Profile Ellipsometry (BPE) for thin dielectric films less than 500A. It has a thermo electrically cooled diode laser with a wavelength of 675 nm and a tungsten halogen lamp for spectrometry mode with a range of 450 to 840 nm. The system can measure film thickness, index of refraction, extinction coefficient, and reflectivity for multiple layers and multiple parameters. It also provides automated defect review, enabling rapid correction of defects for improved quality.