Anti-Reflection Coatings for Diamond Windows for Extreme Temperatures
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2025-01-01 |
| Authors | Shay Joseph, Edi Shaul |
Abstract
Section titled āAbstractāDiamond is gaining increasing attention as a potential window material for optical systems set to operate under extremely high temperatures and harsh environmental conditions. This presents a tremendous challenge to develop durable anti-reflection coatings. In this work we report of a Y 2 O 3 based anti-reflection coating on a poly-crystalline chemical vapor deposited diamond window by using ion beam sputtering. We show that under air ambient, the coating is stable up to at least 600Ā°C for several minutes but fails at 750Ā°C. When placed under vacuum, the same coating performs reasonably well even up to 850Ā°C.