@inproceedings{134cad8573c94dddb9f151d8e93d38c8,
title = "Detector performance for the FIREBall-2 UV experiment",
abstract = "We present an overview of the detector for the upcoming Faint Intergalactic Red-shifted Emission Balloon (FIREBall-2) experiment, with a particular focus on the development of device-integrated optical coatings and detector quantum efficiency (QE). FIREBall-2 is designed to measure emission from the strong resonance lines of HI, OVI, and CIV, all red-shifted to 195-225 nm window; its detector is a delta-doped electron multiplying charge coupled device (EM-CCD). Delta-doped arrays, invented at JPL, achieve 100\% internal QE from the UV through the visible. External losses due to reflection (∼70\% in some UV regions) can be mitigated with antireflection coatings (ARCs). Using atomic layer deposition (ALD), thin-film optical filters are incorporated with existing detector technologies. ALD offers nanometer-scale control over film thickness and interface quality, allowing for precision growth of multilayer films. Several AR coatings, including single and multi-layer designs, were tested for FIREBall-2. QE measurements match modeled transmittance behavior remarkably well, showing improved performance in the target wavelength range. Also under development are ALD coatings to enhance QE for a variety of spectral regions throughout the UV (90-320 nm) and visible (320-1000 nm) range both for space-based imaging and spectroscopy as well as for ground-based telescopes.",
keywords = "AR coating, EMCCD, FIREBall, Ultraviolet, atomic layer deposition, delta doping",
author = "Jewell, \{April D.\} and Hamden, \{Erika T.\} and Ong, \{Hwei Ru\} and John Hennessy and Timothy Goodsall and Charles Shapiro and Samuel Cheng and Todd Jones and Alexander Carver and Michael Hoenk and David Schiminovich and Christopher Martin and Shouleh Nikzad",
note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIX ; Conference date: 09-08-2015 Through 10-08-2015",
year = "2015",
month = aug,
day = "24",
doi = "10.1117/12.2190167",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Siegmund, \{Oswald H. W.\} and Siegmund, \{Oswald H. W.\}",
booktitle = "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIX",
}