ISSTT Proceedings

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A Novel Thermal Detector for Far-Infrared and THZ imaging Arrays

Authors:
Pekka Rantakari, Arttu Luukanen
Abstract:
This paper reports on novel MEMS based thermal detector architecture, which could allow the construction of very large focal plane arrays of bolometers for far-infrared and THz imaging. The principal challenge in developing large format cryogenic bolometer arrays is related to the multiplexing and readout of cryogenic detectors. The readout architectures that are being developed and deployed are mostly based on Superconducting Quantum Interference Devices (SQUIDs), which are highly sensitive but also relatively complex devices and have shortcomings with respect to the robustness of SQUIDs for operation in nonideal condition. The detector architecture presented here is based on the transition-edge sensor (TES), which is integrated on the surface of a freestanding micro electro mechanical (MEM) switch (Fig. 1). The key idea in this architecture is in thermal switching and in transformation of TES output to voltage pulses for faster detection and simpler multiplexing and readout of detectors.
Categories:
Detectors, Poster Session
Year:
2008
Session:
P5
Full-text:
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Page Number(s):
465