Blind To the Optical Light Detectors
Despite their steady improvement over the last decades, the
present UV detectors exhibit some limitations inherent to their silicon
technology. Yet, the utmost spatial resolution, temporal cadence,
sensitivity, and photometric accuracy will be decisive for the forthcoming
space solar missions. The advent of novel diamond or nitride imagers would
surmount many current weaknesses, thus opening up new prospects and making
the instruments cheaper. As for projects like the Solar Probe of NASA, or the
Solar Orbiter of ESA, the aspiration for diamond UV detectors is still more sensible
for these spacecrafts will approach very near to the Sun where the heat and
the radiation fluxes are tremendously high. This triggered the initiative of
an original R&T programme entitled BOLD described in these pages. We depict motivations and intentions,
and report on dedicated experiments with several devices under EUV
synchrotron light, NUV laser, and micro-Raman spectroscopy.
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