Noise, bolometric performance and aging of thin high Tc superconducting films on silicon membranes

Neff, H.; Khrebtov, I. A.; Tkachenko, A. D.; Steinbeiß, E.; Michalke, W.; Semchinova, O.; Heidenblut, T.; Laukemper, J.

doi:10.1016/s0040-6090(98)00369-1

Cited by 11 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The frequency dependence is in agreement with experimental findings. 3,7 The somewhat lower D I * values observed in these simulations at low f are due to larger contributions of flicker (1/f ) noise of this device, since different resistance values and associated noise Hooge coefficients have been used. Most pronounced, under CVM condition, a nearly two orders of magnitude extended frequency span up to 10 5 Hz has been obtained.…”

Section: ͓S0003-6951͑00͒03705-0͔mentioning

confidence: 88%

See 1 more Smart Citation

Nonlinearity and electrothermal feedback of high Tc transition edge bolometers

Neff

Lima

Deep

et al. 2000

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

show abstract

Section: ͓S0003-6951͑00͒03705-0͔mentioning

confidence: 88%

“…Experimentally determined parameters of the superconducting film have been used. 8,7 The influence of operating temperature and biasing conditions on the bolometer performance for CCM and CVM operation is illustrated in Figs. 1 and 2.…”

Section: ͓S0003-6951͑00͒03705-0͔mentioning

confidence: 99%

Nonlinearity and electrothermal feedback of high Tc transition edge bolometers

Neff

Lima

Deep

et al. 2000

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…No specific optimization in order to reduce the excess noise in our YBCO films was made, which explains why the noise level is rather large, if compared to other works17,19 . As shown by Neff et al17 , the use of a thin gold layer onto the YBCO layer can lead to very low noise equivalent temperature at 10 Hz. The use of such levels in our model would have lead to dramatic reduction of the noise floor of the sample holder, which means improvements in the ESR performances.…”

mentioning

confidence: 93%

“…Choosing P in,MAX = 10 mW, V REF = 10 V, S = 100 V K −1 gives G ESR = 100 mW K −1 . Such a thermal conductance value can reasonably be achieved at 90 K using silicon micromachining techniques16,17 : for calculations we assumed a 10 − 30 µm thick membrane of 3 × 3 mm 2 area. It follows that the noise associated with that of the heat sink should be G ESR × T n (10 Hz) of the order of 10 −8 W Hz −1/2 , i.e., a standard deviation of the order 800 pW ef f with a measuring time of 250 s. To estimate the noise associated with that of the receiver thermometer we need to know the receiver time constant.…”

mentioning

confidence: 99%

Low noise temperature control: Application to an active cavity radiometer

Guillet

Robbes

Méchin

2003

Review of Scientific Instruments

View full text Add to dashboard Cite

We have designed low noise temperature sensing and control units with the objective of using them for the fabrication of far infrared active cavity radiometers.The sensing unit, first characterized at 300 K using industrial platinium resistance thermometers, has a noise level of ∼ 25 − 30 µK ef f for a 3 hours measuring time and in a 1 Hz bandwidth. Using YBCO superconducting thermometers, the noise level goes down to 2.5 µK ef f , which is strongly limited by excess 1/f noise in the YBCO film at the superconducting transition. The sample holder used in the 90 K experiments is built with an auxiliary heating resistor, which enables an easy and accurate identification of the electrothermal model, even in the closed loop operation. Based on a design previously published by NIST, we estimate from these experimental results that the overall noise limitations of radiometers could be lowered by one order of magnitude.

show abstract

“…This work is focused on the changes produced by the electrothermal feedback on thermal noise and flicker noise, with particular emphasis on the former. Therefore, analysis of phonon noise is out of the scope of this paper, although its contribution can be dominant in the case of materials with particularly high TCRs [17].…”

Section: Introductionmentioning

confidence: 99%

Thermal Noise-Boosting Effects in Hot-Wire-Based Micro Sensors

et al. 2020

View full text Add to dashboard Cite

This article proposes an original approach aimed at modelling the noise density in sensors based on a single hot wire or pairs of thermally coupled wires. The model consists in an original combination of a previous electrothermal model of the wire with well-established assumptions on the thermal noise in conductors that carry moderate current densities. A simple method for estimating the model parameters with simple impedance spectroscopy is suggested. The predicted power spectral densities of the wire thermal noise differ from the result of previously presented analytical models, stimulating further experimental studies. The effects of the electrothermal feedback of both hot wires and hot-wire pairs on flicker noise is also intrinsically covered by the proposed approach.

show abstract

Noise, bolometric performance and aging of thin high Tc superconducting films on silicon membranes

Cited by 11 publications

References 14 publications

Nonlinearity and electrothermal feedback of high Tc transition edge bolometers

Nonlinearity and electrothermal feedback of high Tc transition edge bolometers

Low noise temperature control: Application to an active cavity radiometer

Thermal Noise-Boosting Effects in Hot-Wire-Based Micro Sensors

Contact Info

Product

Resources

About