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 journalArticleScientificpeer-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 languageEnglish
Pages (from-to)319-322
Number of pages4
JournalSuperconductor Science and Technology
Volume19
Issue number4
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Bolometers
bolometers
low noise
readout
Feedback
amplifiers
Field effect transistors
Bias voltage
Calorimeters
calorimeters
critical temperature
field effect transistors
Photons
Vacuum
Imaging techniques
Temperature
vacuum
sensors
Sensors
photons

Keywords

  • superconducting bolometers
  • superconducting calorimeters
  • bolometers

Cite this

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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.",
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Low-noise readout of superconducting bolometers based on electrothermal feedback. / Penttilä, Jari S. (Corresponding Author); Sipola, Hannu; Helistö, Panu; Seppä, Heikki.

In: Superconductor Science and Technology, Vol. 19, No. 4, 2006, p. 319-322.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

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

VL - 19

SP - 319

EP - 322

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

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