Characterization of Si Membrane TES Bolometer Arrays for the HIRMES Instrument

Barrentine, Emily M.; Rostem, Karwan; Brekosky, Regis P.; Brown, Arthur; Colazo, Felipe; Costen, Nicholas; Hays-Wehle, J. P.; Hsieh, Wen‐Ting; Kluengpho, V.; Kutyrev, A.; Maher, Stephen F.; Mikula, Vilem; Miller, Timothy M.; Oxborrow, Joseph; Sharp, Elmer H.; Watanabe, Tomomi; Wollack, Edward J.; Moseley, S. H.

doi:10.1007/s10909-018-1966-4

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…For very small cross-sectional areas, ballistic legs have been shown to approach the so-called "quantum limit" of thermal conductance, where only four phonon modes can propagate. 66 The bolometers developed for the HIRMES instrument 58 used this technique to achieve kilopixel arrays with NEP el < 1.8 × 10 −18 W∕ ffiffiffiffiffiffi Hz p , 67 in good agreement with the targeted value of NEP <3 × 10 −18 W∕ ffiffiffiffiffiffi Hz p for background-limited operation. Compared to long-legged bolometers, ballistic leg bolometers can achieve much higher array fill fractions, and the achieved thermal conductance of realized legs is both calculable from real bulk material properties and is much more tolerant of fabrication nonidealities and nonuniformities.…”

Section: Thermal Isolation Techniquesmentioning

confidence: 90%

“…In a realized bolometer, the measured n value may take on intermediate values if there are multiple series/parallel conduction paths through differing means or if there are few propagating modes. 58,59 Figure 6 illustrates the natural tradeoffs that occur between operating temperature, time constant, and NEP. In short, a more sensitive bolometer is also slower, thus introducing more stringent requirements on overall instrument stability.…”

Section: Bolometer Sensitivitymentioning

confidence: 99%

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Transition-edge sensor detectors for the Origins Space Telescope

Nagler

Sadleir

Wollack

2021

J. Astron. Telesc. Instrum. Syst.

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The Origins Space Telescope is one of four flagship missions under study for the 2020 Astrophysics Decadal Survey. With a 5.9-m cold (4.5 K) telescope deployed from space, Origins promises unprecedented sensitivity in the near-, mid-, and far-infrared from 2.8 to 588 μm. This mandates the use of ultrasensitive and stable detectors in all of the Origins instruments. At the present, no known detectors can meet Origins' stability requirements in the near-to mid-infrared or its sensitivity requirements in the far-infrared. We discuss the applicability of transition-edge sensors, as both calorimeters and bolometers, to meet these requirements, and lay out a path toward improving the present state-of-the-art. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Thermal Isolation Techniquesmentioning

confidence: 90%

Section: Bolometer Sensitivitymentioning

confidence: 99%

Transition-edge sensor detectors for the Origins Space Telescope

Nagler

Sadleir

Wollack

2021

J. Astron. Telesc. Instrum. Syst.

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“…Central to the HIRMES instrument were its two types of high filling fraction detector arrays [2], [3]: One was comprised of two 32 × 16 sub-arrays of 1 mm × 1 mm transition edge sensor (TES) pixels with a filling fraction of 84.7% in the spectral direction and 99.0% in the spatial direction, and the other was comprised of an 8 × 16 detector array of TES with eight rows of pixels of different dimensions for each row and a filling fraction ranging between 97.6% and 99.3% in the spatial direction for the smallest and largest pixels, respectively.…”

Section: Please Provide Feedbackmentioning

confidence: 99%

Excess Heat Capacity in Mo/Au Transition Edge Sensor Bolometric Detectors

Brown

Brekosky

Colazo-Petit³

et al. 2021

IEEE Trans. Appl. Supercond.

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Excess heat capacity in a bolometric detector has the consequence of increasing or leading to multiple device time constants. The Mo/Au bilayer transition edge sensor (TES) bolometric detectors initially fabricated for the high resolution mid-infrared spectrometer (HIRMES) exhibited two response thermalization scales, one of which is a few times longer than estimates based upon the properties of the bulk materials employed in the design. The relative contribution of this settling time to the overall time response of the detectors is roughly proportional to the pixel area, which ranges between ∼0.3 and 2.6 mm 2 . Use of laser ablation to remove sections of the silicon membranes comprising the pixels results in a detector response with a smaller contribution from the secondary time constant. Additional information about the nature of this excess heat capacity is gleaned from glancing incidence X-ray diffraction, which reveals the presence of molybdenum silicides near the silicon surface which is a consequence of the bi-layer deposition. Quantitative analysis of the concentration of excess molybdenum, estimated with secondary ion mass spectroscopy, is commensurate to the additional heat capacity needed to explain the anomalous time response of the detectors.

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“…The HIRMES detector layout consists of two Transition Edge Sensor (TES) bolometric detector arrays (see Figure 8) that equip HIRMES with eight subarrays of 1×16 pixels for the High-Resolution mode (low saturation power), and a 64×16 array for the Mid-& Low-Resolution and Spectral Imaging modes (high saturation power). A full description of the HIRMES detectors can be found in Brown et al (2018) & Barrentine et al (2018).…”

Section: Detectorsmentioning

confidence: 99%

SOFIA-HIRMES: Looking Forward to the HIgh-Resolution Mid-infrarEd Spectrometer

Richards

Moseley

Stacey

et al. 2018

J. Astron. Instrum.

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The HIgh-Resolution Mid-infrarEd Spectrometer (HIRMES) is the 3 rd Generation Instrument for the Stratospheric Observatory For Infrared Astronomy (SOFIA), currently in development at the NASA Goddard Space Flight Center (GSFC), and due for commissioning in 2019. By combining direct-detection Transition Edge Sensor (TES) bolometer arrays, grating-dispersive spectroscopy, and a host of Fabry-Perot tunable filters, HIRMES will provide the ability for High Resolution (R∼100,000), Mid-Resolution (R∼10,000), and Low-Resolution (R∼600) slit-spectroscopy, and 2D Spectral Imaging (R∼2000 at selected wavelengths) over the 25 -122 μm mid-far infrared waveband. The driving science application is the evolution of proto-planetary systems via measurements of water-vapor, water-ice, deuterated hydrogen (HD), and neutral oxygen lines. However, HIRMES has been designed to be as flexible as possible to cover a wide range of science cases that fall within its phase-space, all whilst reaching sensitivities and observing powers not yet seen thus far on SOFIA, providing unique observing capabilities which will remain unmatched for decades.

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Characterization of Si Membrane TES Bolometer Arrays for the HIRMES Instrument

Cited by 7 publications

References 9 publications

Transition-edge sensor detectors for the Origins Space Telescope

Transition-edge sensor detectors for the Origins Space Telescope

Excess Heat Capacity in Mo/Au Transition Edge Sensor Bolometric Detectors

SOFIA-HIRMES: Looking Forward to the HIgh-Resolution Mid-infrarEd Spectrometer

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