2-03
Christophe Risacher
IRAM, Grenoble
Prospective on heterodyne multi-beam detectors for mm and sub-mm astronomy
Heterodyne receivers for millimetre and sub-millimetre frequencies have dramatically improved in the past 20 years, thanks in particular to the technological push accompanying large missions such as Herschel/HIFI, ALMA or NOEMA. The single pixel performance has reached close to quantum-limited performances and the development goals now consist mainly in extending the RF and IF bandwidths and building large multi-pixel arrays. The current state of the art and various ambitious ongoing multi-beam projects will be presented (with a special focus on IRAM developments). Finally, a projection of the multi-beam possible capabilities for millimetre and sub-millimetre ground-based, airborne and satellite projects will be shown for the mid- to long-term future.
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