High resolution on-chip thermometry using a microstrip-coupled transition edge sensor

Goldie, D. J.; Rostem, Karwan; Withington, S.

doi:10.1063/1.3429088

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…We are currently developing a new chip filterbank spectrometer technology based on transition edge sensors (TESs) [12][13][14][15]. Such a filter bank spectrometer has been proposed as a core enabling technology for a future hyperspectral microwave instrument for atmospheric remote sensing applications.…”

Section: Tes-based Superconducting Filterbank Spectrometer Technologymentioning

confidence: 99%

Information content analysis for a novel TES-based hyperspectral microwave atmospheric sounding instrument

Dongre

Havemann

Hargrave

et al. 2018

Remote Sensing of Clouds and the Atmosphere XXIII

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In context of numerical weather prediction (NWP), increased usage of satellites radiance observations from passive microwave sensors have brought significant improvements in the forecast skills. In the infrared spectral region, hyperspectral sounder instruments such as IASI have already benefitted the NWP assimilation systems, but they are useful only under clear sky conditions. Currently, microwave instruments are providing wealth of information on clouds, precipitation and surface etc., but only with limited number of channels. Furthermore, due to limited number of channels and with poor signal-to-noise ratio, existing passive microwave sensors have very poor resolution and accuracy.We are currently developing a new microwave instrument concept, based on superconducting filterbank spectrometers, which will enable high spectral resolution observations of atmospheric temperature and humidity profiles across the microwave/sub-millimeter wavelength region with photon-noise-limited sensitivity. This study aims at investigating the information content on temperature and water-vapour that could be provided by such a hyperspectral microwave instrument under clear sky-conditions. Here, we present a new concept of Transition Edge Sensors (TESs)-based hyperspectral microwave instrument for atmospheric sounding applications. In this study, for assessing the impact of hyperspectral sampling in microwave spectral region in clear sky-conditions, we have estimated the information content as standard figure of merit called as degrees of freedom for signal (DFS). The DFS for a set of temperature and humidity sounding channels (50-60 GHz, 118GHz and 183 GHz) have been analyzed under the linear optimal estimation theory framework.

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Section: Tes-based Superconducting Filterbank Spectrometer Technologymentioning

confidence: 99%

Information content analysis for a novel TES-based hyperspectral microwave atmospheric sounding instrument

Dongre

Havemann

Hargrave

et al. 2018

Remote Sensing of Clouds and the Atmosphere XXIII

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Section: Practical Considerationsmentioning

confidence: 99%

“…Our own preferred approach is to attach the SUT to a micromachined SiN membrane, which also supports a thin-film temperature sensor. Such devices have been developed extensively for astronomical detectors, and when used at low temperatures can achieve extreme sensitivity [37,38]. Our detectors [39] can detect absorbed powers of much less than 1 fW with noise levels of 1x10 −19 WHz −1/2 , making extreme thermometry of thin-film structures entirely possible.…”

Section: Practical Considerationsmentioning

confidence: 99%

Probing the dynamical behavior of surface dipoles through energy-absorption interferometry

Withington

Thomas

2012

Phys. Rev. A

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Spatial interferometry, based on the measurement of total absorbed power, can be used to determine the state of coherence of the electromagnetic field to which any energy-absorbing structure is sensitive. The measured coherence tensor can be diagonalized to give the amplitude, phase, polarization patterns, and responsivities of the individual electromagnetic modes through which the structure can absorb energy. Because the electromagnetic modes are intimately related to dynamical modes of the system, information about collective excitations can be found. We present simulations, based on the Discrete Dipole Approximation (DDA), showing how the dynamical modes of systems of surface dipoles can be recovered. Interactions are taken into consideration, leading to long-range coherent phenomena, which are revealed by the method. The use of DDA enables the interferometric response of a wide variety of objects to be modeled, from patterned photonic films to biological macromolecules.

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“…[5] The efficiency of a short microstrip (l ≃ 2 mm was better than 97% for source temperatures up to 1.5 K. ferred along a superconducting microstrip between a source and a TES can be used as a fast, accurate thermometer. [6] The practical temperature sensitivity is determined by the TES lowfrequency Noise Equivalent Power, N EP (0). The limiting temperature sensitivity is determined by the very-wide radiofrequency bandwidth of the microstrip coupling so that we substitute ∆f → ∆ν in Eq.…”

Section: Introductionmentioning

confidence: 99%

Transition Edge Sensor Thermometry for On-chip Materials Characterization

Goldie¹,

Glowacka²,

Rostem³

et al. 2011

Preprint

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The next generation of ultra-low-noise cryogenic detectors for space science applications require continued exploration of materials characteristics at low temperatures. The low noise and good energy sensitivity of current Transition Edge Sensors (TESs) permits measurements of thermal parameters of mesoscopic systems with unprecedented precision. We describe a radiometric technique for differential measurements of materials characteristics at low temperatures (below about 3 K). The technique relies on the very broadband thermal radiation that couples between impedance-matched resistors that terminate a Nb superconducting microstrip and the power exchanged is measured using a TES. The capability of the TES to deliver fast, time-resolved thermometry further expands the parameter space: for example to investigate time-dependent heat capacity. Thermal properties of isolated structures can be measured in geometries that eliminate the need for complicating additional components such as the electrical wires of the thermometer itself. Differential measurements allow easy monitoring of temperature drifts in the cryogenic environment. The technique is rapid to use and easily calibrated. Preliminary results will be discussed.

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High resolution on-chip thermometry using a microstrip-coupled transition edge sensor

Cited by 4 publications

References 15 publications

Information content analysis for a novel TES-based hyperspectral microwave atmospheric sounding instrument

Information content analysis for a novel TES-based hyperspectral microwave atmospheric sounding instrument

Probing the dynamical behavior of surface dipoles through energy-absorption interferometry

Transition Edge Sensor Thermometry for On-chip Materials Characterization

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