High TcYBa2Cu3O7-δ superconducting transition-edge microbolometers

F. M. Tong; N. M. Ravindra; L. Ganapathi; S. Giles; R. Rao

doi:10.1016/1350-4495(95)00085-2

High T_cYBa₂Cu₃O_7-δ superconducting transition-edge microbolometers

F. M. Tong, N. M. Ravindra, L. Ganapathi, S. Giles, R. Rao

Physics

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

6 Scopus citations

Abstract

High T_c superconducting thin film YBa₂Cu₃O_7-δ (YBCO) bolometers have been fabricated on various substrates such as MgO, LaAlO₃, YSZ and Si using laser ablation technique. Performance of these IR bolometers operating with a Joule-Thomson refrigerator has been investigated. Measurements of the responsivity and low frequency noise near T_c in the current biased YBCO bolometers show that reliable devices can be fabricated. Measured noise equivalent power (NEP), for YBCO/YSZ bolometer, reaches 6 × 10^-10W/Hz^{1 2} at 165 Hz and has a responsivity of 60 V/W with a blackbody source. This performance is comparable to that of the optimized pyroelectric detectors. The characteristics of YBCO films deposited on Si substrates reveal that superconducting thin film multi-elements or focal plane array with silicon integrated readout circuit are feasible. Such bolometers exhibit NEP of 7 × 10^-9W/Hz^{1 2}, and significant improvement appears possible. Electrical measurements show no noticeable film degradation after the bolometer is exposed to atmosphere for three months.

Original language	English (US)
Pages (from-to)	1053-1058
Number of pages	6
Journal	Infrared Physics and Technology
Volume	36
Issue number	7
DOIs	https://doi.org/10.1016/1350-4495(95)00085-2
State	Published - Dec 1995

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/1350-4495(95)00085-2

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title = "High TcYBa2Cu3O7-δ superconducting transition-edge microbolometers",

abstract = "High Tc superconducting thin film YBa2Cu3O7-δ (YBCO) bolometers have been fabricated on various substrates such as MgO, LaAlO3, YSZ and Si using laser ablation technique. Performance of these IR bolometers operating with a Joule-Thomson refrigerator has been investigated. Measurements of the responsivity and low frequency noise near Tc in the current biased YBCO bolometers show that reliable devices can be fabricated. Measured noise equivalent power (NEP), for YBCO/YSZ bolometer, reaches 6 × 10-10W/Hz 1 2 at 165 Hz and has a responsivity of 60 V/W with a blackbody source. This performance is comparable to that of the optimized pyroelectric detectors. The characteristics of YBCO films deposited on Si substrates reveal that superconducting thin film multi-elements or focal plane array with silicon integrated readout circuit are feasible. Such bolometers exhibit NEP of 7 × 10-9W/Hz 1 2, and significant improvement appears possible. Electrical measurements show no noticeable film degradation after the bolometer is exposed to atmosphere for three months.",

author = "Tong, {F. M.} and Ravindra, {N. M.} and L. Ganapathi and S. Giles and R. Rao",

note = "Funding Information: Partial support for the work was provided by NASA through the contract #NAS538069.",

year = "1995",

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doi = "10.1016/1350-4495(95)00085-2",

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AU - Tong, F. M.

AU - Ravindra, N. M.

AU - Ganapathi, L.

AU - Giles, S.

AU - Rao, R.

N1 - Funding Information: Partial support for the work was provided by NASA through the contract #NAS538069.

PY - 1995/12

Y1 - 1995/12

N2 - High Tc superconducting thin film YBa2Cu3O7-δ (YBCO) bolometers have been fabricated on various substrates such as MgO, LaAlO3, YSZ and Si using laser ablation technique. Performance of these IR bolometers operating with a Joule-Thomson refrigerator has been investigated. Measurements of the responsivity and low frequency noise near Tc in the current biased YBCO bolometers show that reliable devices can be fabricated. Measured noise equivalent power (NEP), for YBCO/YSZ bolometer, reaches 6 × 10-10W/Hz 1 2 at 165 Hz and has a responsivity of 60 V/W with a blackbody source. This performance is comparable to that of the optimized pyroelectric detectors. The characteristics of YBCO films deposited on Si substrates reveal that superconducting thin film multi-elements or focal plane array with silicon integrated readout circuit are feasible. Such bolometers exhibit NEP of 7 × 10-9W/Hz 1 2, and significant improvement appears possible. Electrical measurements show no noticeable film degradation after the bolometer is exposed to atmosphere for three months.

AB - High Tc superconducting thin film YBa2Cu3O7-δ (YBCO) bolometers have been fabricated on various substrates such as MgO, LaAlO3, YSZ and Si using laser ablation technique. Performance of these IR bolometers operating with a Joule-Thomson refrigerator has been investigated. Measurements of the responsivity and low frequency noise near Tc in the current biased YBCO bolometers show that reliable devices can be fabricated. Measured noise equivalent power (NEP), for YBCO/YSZ bolometer, reaches 6 × 10-10W/Hz 1 2 at 165 Hz and has a responsivity of 60 V/W with a blackbody source. This performance is comparable to that of the optimized pyroelectric detectors. The characteristics of YBCO films deposited on Si substrates reveal that superconducting thin film multi-elements or focal plane array with silicon integrated readout circuit are feasible. Such bolometers exhibit NEP of 7 × 10-9W/Hz 1 2, and significant improvement appears possible. Electrical measurements show no noticeable film degradation after the bolometer is exposed to atmosphere for three months.

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High T_cYBa₂Cu₃O_7-δ superconducting transition-edge microbolometers

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