High performance immersed VOx Bolometer for spacecraft Earth Horizon Sensor and its reliability studies

Sumesh, M. A.; Karanth, S. P.; Thomas, Binu; Narayanamurthy, H.; Vijesh, T. V.; Anandachandran, G; Prasad, Lakshman; Viswanathan, Mangalaraja Ramalinga; Rao, Gaofeng

doi:10.1109/smartsens.2015.7873585

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…The performance of V 2 O 5 bolometers has been enhanced by optical coupling using both a germanium hemispherical lens and a polyimide film. Moderate time constants (1.7 ms), responsivity (398 V W −1 ), NEP (6.8 × 10 −10 W Hz −1/2 ) and detectivity (1.28 × 10 9 cm Hz 1/2 W −1 ) have been reported over the range 15-30 THz [46,47].…”

Section: Semiconductor Bolometer (Class A5cmentioning

confidence: 99%

A review of terahertz detectors

Lewis

2019

J. Phys. D: Appl. Phys.

186

101

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Physics is the interplay of energy and matter. Energy, in the form of light, interacting with matter, principally in the solid state, underpins this topical review. The subject is developed carefully and methodically, beginning with basic definitions pertaining to terahertz detectors and terahertz radiation, then proceeding systematically to delineate characteristics of terahertz photons and terahertz detectors in more detail. In-between, the intimate connection linking terahertz sensors and terahertz sources is highlighted-an important aspect unfortunately often overlooked or ignored when terahertz detectors are discussed in isolation. At the centre of this topical review are the various physical mechanisms by which electromagnetic radiation of terahertz frequencies interacts with matter. The logic is to present first the underlying physical principles of detection before presenting the practical implementation in a specific device, rather than the other way around. A taxonomy of terahertz detectors is then proposed based on the underlying physical principles of detection. Following on from this classification, stateof-the-art terahertz detectors are surveyed and appraised; this overview constitutes the longest section of the review. Key detector parameters which inform applications are then presented and tabulated. Finally, the present state-of-the-art is anchored within the wider scientific context of historical developments and future prospects.

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Section: Semiconductor Bolometer (Class A5cmentioning

confidence: 99%

A review of terahertz detectors

Lewis

2019

J. Phys. D: Appl. Phys.

186

101

View full text Add to dashboard Cite

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Optimization of narrow width effect on titanium thermistor in uncooled antenna-coupled terahertz microbolometer

Banerjee

Satoh

Elamaran

et al. 2018

Jpn. J. Appl. Phys.

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Uncooled antenna-coupled terahertz microbolometer arrays are fabricated with a meander-type Ti thermistor, and design widths (DW) = 0.1 and 0.2 µm, considering the design requirement to miniaturize detectors. Each unit device with DW = 0.1 µm of the thermistor has about 4.7 time higher electrical responsivity (132 V/W) than that with DW = 0.2 µm (28.2 V/W) at 10 µA bias current. For DW = 0.2 µm, the calculated noise equivalent power (NEP) was 2.29 ' 10 %9 W/ ffiffiffiffiffiffi Hz p , whereas the minimum NEP of 4.43 ' 10 %10 W/ ffiffiffiffiffiffi Hz p was obtained for DW = 0.1 µm devices, both at 10 µA bias current. The bulk value of temperature coefficient of resistance (TCR) of the Ti thermistor is markedly compromised in low dimensional devices, still in terms of responsivity and NEP, unit devices with Ti thermistor with the lower DW shows better performance. This is because the narrow width effect is minimized owing to higher resistivity for DW = 0.1 than that for DW = 0.2 µm. In this current report, we highlights the optimization of the narrow width effect on TCR of metal interconnects in nanometer dimensions, which to the best of our knowledge is not available at present.

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High performance immersed VOx Bolometer for spacecraft Earth Horizon Sensor and its reliability studies

Cited by 2 publications

References 4 publications

A review of terahertz detectors

A review of terahertz detectors

Optimization of narrow width effect on titanium thermistor in uncooled antenna-coupled terahertz microbolometer

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