Noise measurements in hot-electron titanium nanobolometers

Boris S. Karasik; Sergey V. Pereverzev; David Olaya; Jian Wei; Michael E. Gershenson; Andrei V. Sergeev

doi:10.1109/TASC.2009.2019426

Noise measurements in hot-electron titanium nanobolometers

Boris S. Karasik, Sergey V. Pereverzev, David Olaya, Jian Wei, Michael E. Gershenson, Andrei V. Sergeev

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

14 Scopus citations

Abstract

We are presenting experimental results on the electrical noise in small titanium hot-electron nanobolometers with the critical temperature above 300 mK. The noise data demonstrate good agreement with the conventional bolometer theory prediction. The noise is dominated by the thermal energy fluctuations (phonon noise) when the operating temperature is set just a few mK below the superconducting transition. The corresponding noise equivalent power (NEP) is about 3 x 10^-18 W/Hz^1/2 for the smallest measured device. The relative NEP's for the two devices measured scale roughly as the square root of the device volume as one would expect from the theory. Therefore an additional factor of 2-3 reduction of NEP may be feasible if the length and width of our device are further reduced. The demonstrated combination of the low NEP and the relatively high operating temperature is attractive for submillimeter low-background applications.

Original language	English (US)
Article number	5153086
Pages (from-to)	532-535
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	19
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2009.2019426
State	Published - Jun 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Keywords

Bolometers
Submillimeter wave detectors
Superconducting device noise
Superconducting radiation detectors

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10.1109/TASC.2009.2019426

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title = "Noise measurements in hot-electron titanium nanobolometers",

abstract = "We are presenting experimental results on the electrical noise in small titanium hot-electron nanobolometers with the critical temperature above 300 mK. The noise data demonstrate good agreement with the conventional bolometer theory prediction. The noise is dominated by the thermal energy fluctuations (phonon noise) when the operating temperature is set just a few mK below the superconducting transition. The corresponding noise equivalent power (NEP) is about 3 x 10-18 W/Hz1/2 for the smallest measured device. The relative NEP's for the two devices measured scale roughly as the square root of the device volume as one would expect from the theory. Therefore an additional factor of 2-3 reduction of NEP may be feasible if the length and width of our device are further reduced. The demonstrated combination of the low NEP and the relatively high operating temperature is attractive for submillimeter low-background applications.",

keywords = "Bolometers, Submillimeter wave detectors, Superconducting device noise, Superconducting radiation detectors",

author = "Karasik, {Boris S.} and Pereverzev, {Sergey V.} and David Olaya and Jian Wei and Gershenson, {Michael E.} and Sergeev, {Andrei V.}",

note = "Funding Information: Manuscript received August 23, 2008. First published June 30, 2009; current version published July 10, 2009. The research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.",

year = "2009",

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doi = "10.1109/TASC.2009.2019426",

language = "English (US)",

volume = "19",

pages = "532--535",

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T1 - Noise measurements in hot-electron titanium nanobolometers

AU - Karasik, Boris S.

AU - Pereverzev, Sergey V.

AU - Olaya, David

AU - Wei, Jian

AU - Gershenson, Michael E.

AU - Sergeev, Andrei V.

N1 - Funding Information: Manuscript received August 23, 2008. First published June 30, 2009; current version published July 10, 2009. The research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

PY - 2009/6

Y1 - 2009/6

N2 - We are presenting experimental results on the electrical noise in small titanium hot-electron nanobolometers with the critical temperature above 300 mK. The noise data demonstrate good agreement with the conventional bolometer theory prediction. The noise is dominated by the thermal energy fluctuations (phonon noise) when the operating temperature is set just a few mK below the superconducting transition. The corresponding noise equivalent power (NEP) is about 3 x 10-18 W/Hz1/2 for the smallest measured device. The relative NEP's for the two devices measured scale roughly as the square root of the device volume as one would expect from the theory. Therefore an additional factor of 2-3 reduction of NEP may be feasible if the length and width of our device are further reduced. The demonstrated combination of the low NEP and the relatively high operating temperature is attractive for submillimeter low-background applications.

AB - We are presenting experimental results on the electrical noise in small titanium hot-electron nanobolometers with the critical temperature above 300 mK. The noise data demonstrate good agreement with the conventional bolometer theory prediction. The noise is dominated by the thermal energy fluctuations (phonon noise) when the operating temperature is set just a few mK below the superconducting transition. The corresponding noise equivalent power (NEP) is about 3 x 10-18 W/Hz1/2 for the smallest measured device. The relative NEP's for the two devices measured scale roughly as the square root of the device volume as one would expect from the theory. Therefore an additional factor of 2-3 reduction of NEP may be feasible if the length and width of our device are further reduced. The demonstrated combination of the low NEP and the relatively high operating temperature is attractive for submillimeter low-background applications.

KW - Bolometers

KW - Submillimeter wave detectors

KW - Superconducting device noise

KW - Superconducting radiation detectors

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Noise measurements in hot-electron titanium nanobolometers

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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