Abstract
Electro-optical/infrared (EO/IR) sensors and photovoltaic power sources are being developed for a variety of defense and commercial applications. One of the critical technologies that will enhance both EO/IR sensor and photovoltaic module performance is the development of high quality nanostructure-based antireflection coatings. In this paper, we review our work on advanced antireflection structures that have been designed by using a genetic algorithm and fabricated by using oblique angle deposition. The antireflection coatings are designed for the wavelength range of 250 nm to 2500 nm and an incidence angle between 00 and 400. These nanostructured antireflection coatings are shown to enhance the optical transmission through transparent windows over a wide band of interest and minimize broadband reflection losses to less than one percent, a substantial improvement over conventional thin-film antireflection coating technologies.
Highlights
EO/IR sensors are being developed for a variety of defense and commercial systems applications [1,2,3,4,5,6,7,8]
We review our work on advanced antireflection structures that have been designed by using a genetic algorithm and fabricated by using oblique angle deposition
We summarize our recent efforts to extend this technology to other substrates and other bands of interest in the visible, near infrared (NIR), and mid-wavelength infrared (MWIR) spectrums for generation EO/IR sensors
Summary
EO/IR sensors are being developed for a variety of defense and commercial systems applications [1,2,3,4,5,6,7,8]. These include ultraviolet (UV), visible, near infrared (NIR), mid-wavelength infrared (MWIR), and long-wavelength infrared (LWIR) nanotechnology-based sensors. One of the critical technologies that will further improve EO/IR sensor performance is the development of high quality nanostructure-based antireflection coatings (ARCs). Nanostructure-based ARCs can enhance the performance of UV, visible, and NIR sensors, and extend their utility to longer wavelength applications
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