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.
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Semiconductors
Bandgap, electronic transitions and critical points can be
measured for semiconductor materials such as GaN, InP,
SiGe, CdTe, etc. Good wavelength resolution and ability
to measure depolarization insure accurate optical constants.
Photosensitive Materials
The monochromator is positioned before the sample,
so only low intensity monochromatic light strikes the
sample. This prevents exposure of photosensitive samples.

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