A fast, high-responsivity bolometer detector for the very-far infrared

Zwerdling, S.; Smith, R. A.; Theriault, J. P.

doi:10.1016/0020-0891(68)90036-5

Cited by 55 publications

(6 citation statements)

References 58 publications

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“…The value of the ambient resistivity of N 0.1 Q cm seems to indicate that the germanium used might be too highly doped. However, preliminary measurements of the R/T relationship yielded a value of the activation temperature of E/k = 5.6 K at the temperature of 1.3 K, close to the values reported by other authors [2], [3].…”

supporting

confidence: 89%

“…Bolometer. -As infrared detector we opted for a Ge : Ga bolometer for its outstanding performances in detectivity and N. E. P. The theory of this type of bolometer has already been extensively treated by several authors [2], [3] so we limit ourselves to an outline of the preparation and the performance of the bolometer we have mounted.…”

mentioning

confidence: 99%

“…The responsitivity at the operating point of 1.3 K was determined by the static method as used by previous authors [2], [4] which is based on on the V/I relationship : where V is the voltage across the bolometer, R = V/I its resistance (427 kQ), Z = dV/dI its dynamic resistance (362 kQ) and RI the load resistance (10 MQ metal-film at 4.2 K). The thermal conductance is given by and can be obtained through the P(I) plot and the thermal measurement of R(T).…”

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confidence: 99%

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An apparatus for absorption measurements in the far infrared by Fourier transform

Meyer

Petitgrand

1976

Rev. Phys. Appl. (Paris)

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Reçu le 8 mars 1976, accepté le 21 mai 1976) Résumé. 2014 L'article donne la description d'un système complet destiné à l'étude dans l'infrarouge lointain de matériaux magnétiques à des températures aussi basses que 1,3 K et à des champs magnétiques allant jusqu'à 7,5 T. Les bonnes performances de l'ensemble sont illustrées par des résultats sur FeCl2 et les ions de Fe2+ dans MgO. Abstract. 2014 The description of a complete system for far infrared studies of magnetic materials at temperatures as low as 1.3 K and magnetic fields up to 7.5 T is given. The good overall performance is demonstrated by the results on FeCl2 and Fe2+ ions in MgO.

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confidence: 99%

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An apparatus for absorption measurements in the far infrared by Fourier transform

Meyer

Petitgrand

1976

Rev. Phys. Appl. (Paris)

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“…Предполагается, что теплоемкость и теплопроводность маленьких теплоизолирующих балок много меньше теплоемкости и теплопроводности мембраны болометра, что обеспечивает однородность ее температуры, которую будем считать температурой болометра T D . Под воздействием излучения сигнала изменяются сопротивление болометра R D и соответственно Q D , что приводит к дополнительному изменению температуры T D в результате так называемого термоэлектрического взаимодействия или термоэлектрической обратной связи [20]. В случае включения болометра последовательно с источником постоянного напряжения V 0 и нагрузочным сопротивлением, величина которого R L не зависит от выделяющейся в нем мощности, изменение мощности выделяющегося джоулевого тепла Q D описывается соотношением dQ D (T D ) = βαQ DO dT D [20,21].…”

Section: температурный отклик болометра при импульсном освещенииunclassified

“…Тейлора вблизи рабочей точки T O до членов первого порядка, соотношение (1) можно записать в виде [20]:…”

Section: температурный отклик болометра при импульсном освещенииunclassified

Применение Неохлаждаемых Микроболометров Для Регистрации Импульсного Терагерцового И Инфракрасного Излучения

Демьяненко¹,

Старцев²

2022

Журнал Технической Физики

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Analytical relations for temperature response of the bolometer to periodic radiation pulses are obtained. It is theoretically shown and experimentally confirmed by the example of infrared bolometers that when detecting short radiation pulses, in contrast to the case of constant radiation, increasing the thermal conductivity of the bolometer and, accordingly, decreasing its thermal relaxation time, it is possible to significantly increase the response rate of the receiver, practically without reducing its sensitivity. The possibility of effective registration of pulsed terahertz radiation by microbolometers with a resistively coupled, thermally non-isolated antenna is considered. It is shown that such bolometers, which have increased thermal conductivity and, accordingly, reduced sensitivity to continuous-wave radiation, can be highly effective when detecting pulsed radiation with a duration shorter than the thermal relaxation time of the bolometer. On their basis, uncooled matrix detectors of pulsed terahertz radiation, characterized by a minimum detectable energy of less than 110-12 J and a frame rate of up to 1000 Hz, can be developed.

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Improvement in the signal-to-noise ratio in far infrared spectroscopy due to the use of a gallium-doped germanium bolometer

Hadni¹,

Strimer²,

Thomas³

et al. 1971

Phys. Stat. Sol. (a)

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Using a very well defined material, a description is given of the electronic and optical schemes. A comparison of a Golay detector mounted at the focus of an ellipsoidal mirror with the germanium bolometer at the end of a cylindrical light pipe, corner mirror, and filters whose gross transmission is only 2%. shows that the germanium bolometer is still favoured by a factor greater than 18. Hence NEP(cg+OptlCS) N 5 x and NEP(Q~) = N W Hz-112. The second value is the best one described up today. It could be still improved by a factor two.En prPparant un matkriau particulihrement bien defini, l'blectronique et l'optique sont d6crites. La cornparaison avec un rhcepteur de Golay, monte au foyer d'un miroir elliptique, et un bolomt?tre a n germanium place l'extremit6 d'une optique comprenant un guide de lurnik-e cylindrique, un miroir de coin et des filtres, dont In. transmission totale n'atteint guhre que 2%, est encore en faveur du bolometre au germanium avec un facteur supkrieur ?L 18. On trouve un NEP(Ge+optique) = 5 X W Hz-112. Le second est un des meilleurs dhcrits a ce jour. I1 peut &re amklior6 d a m un rapport deux, et Ir premier dam un rapport voisin de dix, grace a une optique plus soignke. W Hz-l12 e t un NEP(ae) =

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A fast, high-responsivity bolometer detector for the very-far infrared

Cited by 55 publications

References 58 publications

An apparatus for absorption measurements in the far infrared by Fourier transform

An apparatus for absorption measurements in the far infrared by Fourier transform

Применение Неохлаждаемых Микроболометров Для Регистрации Импульсного Терагерцового И Инфракрасного Излучения

Improvement in the signal-to-noise ratio in far infrared spectroscopy due to the use of a gallium-doped germanium bolometer

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