What are the optical properties of CaF2?
Low absorption.
High refractive index homogeneity.
Chemically inert.
High damage threshold.
Physically stable.
High mechanical strength.
Insoluble in water.

Applications of CaF2 windows
1. Infrared sensors and infrared cameras.
2. High-temperature environmental monitoring.
3. Infrared analysis and reaction monitoring in the chemical field.
4. Aerospace and optical communications.
5. Excimer laser optics.
6. Cold thermal imaging systems.