4 February 2004 Development of imaging arrays for solar UV observations based on wide band gap materials
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Abstract
Solar ultraviolet imaging instruments in space pose most demanding requirements on their detectors in terms of dynamic range, low noise, high speed, and high resolution. Yet UV detectors used on missions presently in space have major drawbacks limiting their performance and stability. In view of future solar space missions we have started the development of new imaging array devices based on wide band gap materials (WBGM), for which the expected benefits of the new sensors - primarily visible blindness and radiation hardness - will be highly valuable. Within this initiative, called “Blind to Optical Light Detectors (BOLD)”, we have investigated devices made of AlGa-nitrides and diamond. We present results of the responsivity measurements extending from the visible down to extreme UV wavelengths. We discuss the possible benefits of these new devices and point out ways to build new imaging arrays for future space missions.
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Udo H. Schuehle, Jean-Francois E. Hochedez, Jose Luis Pau, Carlos Rivera, Elias Munoz, Jose Alvarez, Jean-Paul Kleider, Philippe Lemaire, Thierry Appourchaux, Bernhard Fleck, Anthony Peacock, Mathias Richter, Udo Kroth, Alexander Gottwald, Marie-Claude Castex, Alain Deneuville, Pierre Muret, Milos Nesladek, Franck Omnes, Joachim John, Chris Van Hoof, "Development of imaging arrays for solar UV observations based on wide band gap materials", Proc. SPIE 5171, Telescopes and Instrumentation for Solar Astrophysics, (4 February 2004); doi: 10.1117/12.507730; http://dx.doi.org/10.1117/12.507730
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KEYWORDS
Sensors

Ultraviolet radiation

Diamond

Vacuum ultraviolet

Charge-coupled devices

Microchannel plates

Photodiodes

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