Enhanced aluminum reflecting and solar-blind filter coatings for the far-ultraviolet

Javier Del Hoyo; Manuel Quijada

doi:10.1117/12.2274399

5 September 2017 Enhanced aluminum reflecting and solar-blind filter coatings for the far-ultraviolet

Javier Del Hoyo, Manuel Quijada

Proceedings Volume 10372, Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems III; 1037204 (2017) https://doi.org/10.1117/12.2274399
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The advancement of far-ultraviolet (FUV) coatings is essential to meet the specified throughput requirements of the Large UV/Optical/IR (LUVOIR) Surveyor Observatory which will cover wavelengths down to the 100 nm range. The biggest constraint in the optical thin film coating design is attenuation in the Lyman-Alpha Ultraviolet range of 100-130 nm in which conventionally deposited thin film materials used in this spectral region (e.g., aluminum [Al] protected with Magnesium fluoride [MgF₂]) often have high absorption and scatter properties degrading the throughput in an optical system. We investigate the use of optimally deposited aluminum and aluminum tri-fluoride (AlF₃) materials for reflecting and solar blind band-pass filter coatings for use in the FUV. Optical characterization of the deposited designs has been performed using UV spectrometry. The optical thin film design and optimal deposition conditions to produce superior reflectance and transmittance using Al and AlF₃ are presented.

Citation Download Citation

Javier Del Hoyo and Manuel Quijada "Enhanced aluminum reflecting and solar-blind filter coatings for the far-ultraviolet", Proc. SPIE 10372, Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems III, 1037204 (5 September 2017); https://doi.org/10.1117/12.2274399

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