Producing large EFG sapphire sheet for VIS-IR (500-5000 nm) window applications

John W. Locher; Herb E. Bates; Christopher D. Jones; Steven A. Zanella

doi:10.1117/12.603843

18 May 2005 Producing large EFG sapphire sheet for VIS-IR (500-5000 nm) window applications

John W. Locher, Herb E. Bates, Christopher D. Jones, Steven A. Zanella

Proceedings Volume 5786, Window and Dome Technologies and Materials IX; (2005) https://doi.org/10.1117/12.603843
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

EFG sapphire sheet measuring 305 x 510mm and 225 x 660mm have been produced in quantity. The average optical transmission of 6.15 mm thick uncoated polished panels is 84.0% ± 0.5 at 700 nm. This value assures good transmission throughout the 500 to 5000 nm spectral range. Effective absorption coefficients for this spectral range and thickness are calculated and presented. An a verage index inhomogeneity of 6 ppm ± 2 has been measured and is the requirement for panels polished to 0.1λ at this thickness (@633 nm).

Citation Download Citation

John W. Locher, Herb E. Bates, Christopher D. Jones, and Steven A. Zanella "Producing large EFG sapphire sheet for VIS-IR (500-5000 nm) window applications", Proc. SPIE 5786, Window and Dome Technologies and Materials IX, (18 May 2005); https://doi.org/10.1117/12.603843

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