VASE^®Ellipsometer Applications

Telecommunications - Laser optics
Accurate wavelength selection using monochromator allows measurements at the operating wavelength for optics,
e.g. 1550nm, 1310nm, 980nm, 632.8nm, 589nm …

Optical Coatings
The AutoRetarder® measures Δ accurately even when close to 0° or 180° which helps characterize thin films on transparent substrates, such as glass or plastics.

Thick Films
For thicker films (>5 μm), good spectral resolution is needed to resolve the interference oscillation features of Ψ/Δ data. Operator defined monochromator step size and narrow bandwidth help resolve fine spectral features.

Photosensitive Materials
The monochromator is positioned before the sample, so only low intensity monochromatic light strikes the sample. This prevents exposure of photosensitive samples.