Silicon Windows from Stock.
Optical grade Silicon is normally specified with a resistivity of 5 to 40 ohm-cm which is higher than most semiconductor applications. The usual material, unless otherwise specified is CZ, Czochralski Grade which has a Si-O absorption band at 9μm and so not important if the windows are used in the 3 to 5μm thermal band. Where required FZ, Float Zone material can be supplied which does not have this absorption.
Very high resistivity material can be supplied on special order, particularly for TeraHertz applications.
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