Crystalline Quartz Outer Window (Optistat CF/DN new style) which measures 42mm diameter x 2mm thick. The Optistat CF / Optistat DN are both types of cryostat that provide superb optical access and an excellent cryogenic temperature environment for optical measurements.
Crystalline Quartz Outer Window (Optistat CF/DN new style). Measuring 42mm diameter x 2mm thick.
Quartz is transparent in the visible and ultraviolet portions of the electromagnetic spectrum. It also exhibits birefringence, meaning it can split a beam of light into two polarized beams that travel at different speeds.