19 July 2016 Optical characterisation of a camera module developed for ultra-low NEP TES detector arrays at FIR wavelengths
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Abstract
Here we report on the optical design and on the spectral-spatial characterisation of a small 16 pixel camera. The prototype uses TES detectors with NEPs ~10-16 W/Hz0.5 which have been fabricated with near identical optical coupling structures to mimic their much lower NEP counterparts (~10-19 W/Hz0.5). This modification, which is achieved through changing only the pixel thermal conductance, G, has allowed us to perform spectral/spatial cryogenic testing using a 100mK ADR to view room temperature thermal sources. The measurements show a flat spectral response across the waveband and minimal side lobe structure in the antenna patterns down to 30dB.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. Morozov, D. Morozov, R. Sudiwala, R. Sudiwala, P. A. R. Ade, P. A. R. Ade, D. J. Goldie, D. J. Goldie, D. M. Glowacka, D. M. Glowacka, S. Withington, S. Withington, N. A. Trappe, N. A. Trappe, "Optical characterisation of a camera module developed for ultra-low NEP TES detector arrays at FIR wavelengths", Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 991409 (19 July 2016); doi: 10.1117/12.2232139; https://doi.org/10.1117/12.2232139
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