A kilo-pixel imaging system for future space based far-infrared observatories using microwave kinetic inductance detectors

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Volume 601 (May 2017)

A&A, 601 (2017) A89

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Table 3

Measured parameters for the demonstrator system.

pixels	λ	λ/ Δλ	NEP_det	Absorption	Instantaneous	Cosmic Ray	Crosstalk	1/f knee	1/f knee	Yield
				efficiency	dynamic range^d	dead time		phase	amplitude

961	350 μm	5		>0.72^a	1 × 10⁵	<5%	<−30 dB	n.a.^b	<0.05	>83%
								0.2 Hz^c	<0.05^c

Notes. The 1/f knee is given for “cold and dark” conditions, applicable for low-background imaging systems, and for a 56 fW power per pixel, which is the estimated low-power limit for a CMB mission.

^(a)

The absorption efficiency is referred to an optimal design with a single polarisation input which has an aperture efficiency η_AE = 0.8. The measured aperture efficiency η_AE = 0.58.

^(b)

The spectra at “dark and cold” conditions (10 aW/pixel) are not white.

^(c)

Measured at 50 fW power per pixel.

^(d)

The instantaneous dynamic range is defined as the ratio of the maximum source power divided by the limiting NEP under dark and cold conditions.

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