Current status of very large sapphire crystal growth for optical applications

Frederick Schmid; Chandra P. Khattak; Henry H. Rogers; D. Mark Felt; Joel Askinazi; Richard V. Wientzen

doi:10.1117/12.354643

26 July 1999 Current status of very large sapphire crystal growth for optical applications

Frederick Schmid, Chandra P. Khattak, Henry H. Rogers, D. Mark Felt, Joel Askinazi, Richard V. Wientzen

Proceedings Volume 3705, Window and Dome Technologies and Materials VI; (1999) https://doi.org/10.1117/12.354643
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Sapphire is an ideal visible-MWIR window due to its excellent optical and mechanical properties and its availability in large sizes up to 340-mm diameter boules. Anticipated applications for new, high performance optical systems call for even larger, 450-750 mm diameter, windows. The present effort has focused on producing 500-mm diameter sapphire boules using the Heat Exchanger Method. Three experimental growth runs demonstrated the feasibility of producing 500-mm diameter sapphire boules. Completely crack- free boules have not been grown, but large size sapphire pieces up to 400 mm by 280 mm have yielded from these experimental runs.

Citation Download Citation

Frederick Schmid, Chandra P. Khattak, Henry H. Rogers, D. Mark Felt, Joel Askinazi, and Richard V. Wientzen "Current status of very large sapphire crystal growth for optical applications", Proc. SPIE 3705, Window and Dome Technologies and Materials VI, (26 July 1999); https://doi.org/10.1117/12.354643

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available