Calcium Fluoride Middle Window (Optistat CF/DN new style). Measuring 26mm diameter x 1mm thick. 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.
Calcium Fluoride Middle Window (Optistat CF/DN new style) Calcium fluoride may be used in the near and mid IR. It cannot be used as a cold inner window due to its mechanical and thermal properties. The transmission data is for a 2 mm thick window. Measuring 26mm diameter x 1mm thick.
The OptistatCF-V is a vacuum loading continuous flow cryostat. Liquid cryogen is drawn from a separate helium or nitrogen storage dewar and circulated through the heat exchanger in the cryostat. The cryogen flow is regulated by a needle valve on the transfer tube. Precise temperature control is obtained using an ITC temperature controller.