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Proceedings Paper

Development of nanostructured antireflection coatings for infrared technologies and applications
Author(s): Gopal G. Pethuraja; John W. Zeller; Roger E. Welser; Harry Efstathiadis; Pradeep Haldar; Priyalal S. Wijewarnasuriya; Nibir K. Dhar; Ashok K. Sood
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Paper Abstract

Infrared (IR) sensing technologies and systems operating from the near-infrared (NIR) to long-wave infrared (LWIR) spectra are being developed for a variety of defense and commercial systems applications. Reflection losses affecting a significant portion of the incident signal limits the performance of IR sensing systems. One of the critical technologies that will overcome this limitation and enhance the performance of IR sensing systems is the development of advanced antireflection (AR) coatings. Magnolia is actively involved in the development and advancement of ultrahigh performance AR coatings for a wide variety of defense and commercial applications. Ultrahigh performance nanostructured AR coatings have been demonstrated for UV to LWIR spectral bands using various substrates. The AR coatings enhance the optical transmission through optical components and devices by significantly minimizing reflection losses, a substantial improvement over conventional thin-film AR coating technologies. Nanostructured AR coatings are fabricated using a tunable self-assembly process on substrates that are transparent for a given spectrum of interest ranging from UV to LWIR. The nanostructured multilayer structures have been designed, developed and optimized for various optoelectronic applications. The optical properties of the AR-coated optical components and sensor substrates have been measured and fine-tuned to achieve a predicted high level of performance of the coatings. In this paper, we review our latest work on high quality nanostructure-based AR coatings, including recent efforts towards the development of nanostructured AR coatings on IR-transparent substrates.

Paper Details

Date Published: 19 September 2017
PDF: 10 pages
Proc. SPIE 10404, Infrared Sensors, Devices, and Applications VII, 104040S (19 September 2017); doi: 10.1117/12.2277957
Show Author Affiliations
Gopal G. Pethuraja, Magnolia Optical Technologies, Inc. (United States)
SUNY Polytechnic Institute (United States)
John W. Zeller, Magnolia Optical Technologies, Inc. (United States)
Roger E. Welser, Magnolia Optical Technologies, Inc. (United States)
Harry Efstathiadis, SUNY Polytechnic Institute (United States)
Pradeep Haldar, SUNY Polytechnic Institute (United States)
Priyalal S. Wijewarnasuriya, U.S. Army Research Lab. (United States)
Nibir K. Dhar, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Ashok K. Sood, Magnolia Optical Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 10404:
Infrared Sensors, Devices, and Applications VII
Paul D. LeVan; Ashok K. Sood; Priyalal Wijewarnasuriya; Arvind I. D'Souza, Editor(s)

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