Low-noise readout of superconducting bolometers based on electrothermal feedback

Jari S. Penttilä; Hannu Sipola; Panu Helistö; Heikki Seppä

doi:10.1088/0953-2048/19/4/013

Low-noise readout of superconducting bolometers based on electrothermal feedback

Jari S. Penttilä (Corresponding Author), Hannu Sipola, Panu Helistö, Heikki Seppä

Research output: Contribution to journal › Article › Scientific › peer-review

33 Citations (Scopus)

Abstract

We have developed a simple room-temperature readout for superconducting bolometers and calorimeters. Due to electro-thermal feedback, the bolometer can be noise-matched with the readout amplifier. The constructed amplifier consists of low-noise field-effect transistors, and voltage bias is actively provided by electrical feedback. According to our measurements on superconducting vacuum-bridge bolometers, the total noise is limited by the bolometer phonon and Johnson noise characterized by a critical temperature of 8.5 K. We show that, with proper sensor design, it is possible to reach the photon noise limit in video-rate submillimetre imaging applications.

Original language	English
Pages (from-to)	319-322
Number of pages	4
Journal	Superconductor Science and Technology
Volume	19
Issue number	4
DOIs	https://doi.org/10.1088/0953-2048/19/4/013
Publication status	Published - 2006
MoE publication type	A1 Journal article-refereed

Keywords

superconducting bolometers
superconducting calorimeters
bolometers

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10.1088/0953-2048/19/4/013

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title = "Low-noise readout of superconducting bolometers based on electrothermal feedback",

abstract = "We have developed a simple room-temperature readout for superconducting bolometers and calorimeters. Due to electro-thermal feedback, the bolometer can be noise-matched with the readout amplifier. The constructed amplifier consists of low-noise field-effect transistors, and voltage bias is actively provided by electrical feedback. According to our measurements on superconducting vacuum-bridge bolometers, the total noise is limited by the bolometer phonon and Johnson noise characterized by a critical temperature of 8.5 K. We show that, with proper sensor design, it is possible to reach the photon noise limit in video-rate submillimetre imaging applications.",

keywords = "superconducting bolometers, superconducting calorimeters, bolometers",

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T1 - Low-noise readout of superconducting bolometers based on electrothermal feedback

AU - Penttilä, Jari S.

AU - Sipola, Hannu

AU - Helistö, Panu

AU - Seppä, Heikki

PY - 2006

Y1 - 2006

N2 - We have developed a simple room-temperature readout for superconducting bolometers and calorimeters. Due to electro-thermal feedback, the bolometer can be noise-matched with the readout amplifier. The constructed amplifier consists of low-noise field-effect transistors, and voltage bias is actively provided by electrical feedback. According to our measurements on superconducting vacuum-bridge bolometers, the total noise is limited by the bolometer phonon and Johnson noise characterized by a critical temperature of 8.5 K. We show that, with proper sensor design, it is possible to reach the photon noise limit in video-rate submillimetre imaging applications.

AB - We have developed a simple room-temperature readout for superconducting bolometers and calorimeters. Due to electro-thermal feedback, the bolometer can be noise-matched with the readout amplifier. The constructed amplifier consists of low-noise field-effect transistors, and voltage bias is actively provided by electrical feedback. According to our measurements on superconducting vacuum-bridge bolometers, the total noise is limited by the bolometer phonon and Johnson noise characterized by a critical temperature of 8.5 K. We show that, with proper sensor design, it is possible to reach the photon noise limit in video-rate submillimetre imaging applications.

KW - superconducting bolometers

KW - superconducting calorimeters

KW - bolometers

U2 - 10.1088/0953-2048/19/4/013

DO - 10.1088/0953-2048/19/4/013

M3 - Article

SN - 0953-2048

VL - 19

SP - 319

EP - 322

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 4

ER -

Low-noise readout of superconducting bolometers based on electrothermal feedback

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Keywords

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