Eliminating stray radiation inside large area imaging arrays

With increasing array size, it is increasingly important to control stray radiation inside the detector chips themselves. We demonstrate this effect with focal plane arrays of absorber coupled Lumped Element microwave Kinetic Inductance Detectors (LEKIDs) and lens-antenna coupled distributed quarter...

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Bibliographic Details
Published in:arXiv.org 2018-09
Main Authors: Yates, Stephen J C, Doyle, Simon, Barry, Peter, Baryshev, Andrey M, Bueno, Juan, Ferrari, Lorenza, Llombart, Nuria, Murugesan, Vignesh, Thoen, David J, Yurduseven, Ozan, Baselmans, Jochem J A
Format: Article
Language:English
Subjects:
Absorbers
Antenna arrays
Antennas
Detectors
Focal plane devices
Inductance
Stray light
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Summary:With increasing array size, it is increasingly important to control stray radiation inside the detector chips themselves. We demonstrate this effect with focal plane arrays of absorber coupled Lumped Element microwave Kinetic Inductance Detectors (LEKIDs) and lens-antenna coupled distributed quarter wavelength Microwave Kinetic Inductance Detectors (MKIDs). In these arrays the response from a point source at the pixel position is at a similar level to the stray response integrated over the entire chip area. For the antenna coupled arrays, we show that this effect can be suppressed by incorporating an on-chip stray light absorber. A similar method should be possible with the LEKID array, especially when they are lens coupled.
ISSN:2331-8422
DOI:10.48550/arxiv.1809.04452