Spectrosil B Quartz Middle Window (Optistat CF/DN new style).A range of replacement fittings and accessories are available to help you change the optical configuration of your cryostat. The type of window material selected will be determined by the wavelenth and intensity of the radiation, the environmental temperature and whether or not beam polarisation is required.
Spectrosil B Quartz Middle Window (Optistat CF/DN new style Spectrosil B is a synthetic vitreous silica. The material itself is not birefringent and standard strain-relieved low temperature window mounts ensure that Spectrosil B windows do not affect polarised light. It is an excellent material for filtering out the near-mid IR room temperature thermal radiation, resulting in a low thermal load on the cryostat. The transmission data is for a 2 mm thick window. Measuring 26mm diameter x 1mm thick
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