CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10181 > Article
Presentation
7 June 2017 Antireflective surface structures on infrared optics (Conference Presentation)
Lynda E. Busse, Jesse A. Frantz, L. Brandon Shaw, Shyam Bayya, Guillermo Villalobos, Ishwar D. Aggarwal, Jas S. Sanghera
Author Affiliations +
Proceedings Volume 10181, Advanced Optics for Defense Applications: UV through LWIR II; 101810I (2017) https://doi.org/10.1117/12.2262893
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States
Abstract
Infrared-transmitting optics used in imaging systems have high refractive indices (n=1.4 to n > 3) that require antireflective (AR) coatings. These coatings have limitations in that they can delaminate in operational environments, which is a problem particularly for broadband coatings that consist of multiple layers of dissimilar materials. In addition, residual reflections within an imaging system can cause ghost reflections, degrading performance. Recently, new methods have been developed for fabrication of anti-reflective surface structures (ARSS) on optics that significantly reduce reflection losses at the surface. The ARSS approach provides a more robust solution by using surface structures built directly into the actual surface of the optics, without the need for a coating with extraneous materials. We present recent results that demonstrate superior ARSS performance on a variety of optics for use in the infrared spectral region. These materials have been successfully patterned with ARSS using reactive ion etching (RIE) or using photolithography and etching. We report on reflection losses as low as 0.02% for fused silica at 1.06 microns, and have also demonstrated low reflection losses for ARSS on germanium, spinel ceramic, and sapphire, all of which are important for mid- to long-wave infrared imaging applications.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Lynda E. Busse, Jesse A. Frantz, L. Brandon Shaw, Shyam Bayya, Guillermo Villalobos, Ishwar D. Aggarwal, and Jas S. Sanghera "Antireflective surface structures on infrared optics (Conference Presentation)", Proc. SPIE 10181, Advanced Optics for Defense Applications: UV through LWIR II, 101810I (7 June 2017); https://doi.org/10.1117/12.2262893
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Reflection
Infrared imaging
Infrared radiation
Optical coatings
Antireflective coatings
Reactive ion etching
Imaging systems
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top