Optical Window for Far-IR Instruments Using Thin TOPAS® Film

Most flight instruments that use cryogenics or non-cryogenics require physical isolation of their internal instruments (sensors, detectors, spectrometers) from the external environment. This isolating window film also needs to be transparent in the operational frequency of the internal instruments to detect electromagnetic waves. As such, the film needs to have the necessary strength to hold the vacuum pull and provide a low transmission loss.