Exploring novel methods to achieve sensitivity limits for high operating temperature infrared detectors

Srivastav, Vanya; Sharma, R. K.; Bhan, R. K.; Dhar, V.; Venkataraman, V.

doi:10.1016/j.infrared.2013.09.004

Cited by 7 publications

(6 citation statements)

References 41 publications

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“…[5][6][7][8] Despite considerable success has been achieved by semiconductor, the generation-recombination noise in the photodetector limits further improvement of the device performance. 9,10 Therefore, the exploration of alternative system remains crucial in optoelectronic detection. Semimetal is a kind of material with high carrier concentration and low carrier mobility compared to those of semiconductor, which is generally considered unsuitable for high sensitivity of photodetection due to the shortcomings of low responsivity and high noise.…”

Section: Introductionmentioning

confidence: 99%

High sensitivity of semimetal photodetection via Bose–Einstein condensation

Wu,

Qiu,

et al. 2023

InfoMat

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The discovery of semiconductor has witnessed remarkable strides toward high performance of photodetectors attributed to its excellent carrier properties. However, semimetal, owning to the high carrier concentration and low carrier mobility compared to those of semiconductor, is generally considered unsuitable for photodetection. Herein, we demonstrate an outstanding photodetection in a layered semimetal titanium diselenide (TiSe2) in Bose–Einstein condensation (BEC) state. High sensitivity of semimetal photodetector is realized in the range of visible, infrared and terahertz bands. The noise equivalent power (NEP) has threefold improvement at the visible and infrared wavebands, and significant decrease by one order of magnitude in the terahertz frequencies via BEC phenomenon, attributed to the electrical parameter variation after condensation. The best NEP value in the terahertz frequency is comparable to that of commercial Si photodetector. Our results show another recipe to fabricate high performance of photodetection via semimetal except for semiconductor and pave the way to exploit macroscopic quantum phenomena for optoelectronics.image

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Section: Introductionmentioning

confidence: 99%

High sensitivity of semimetal photodetection via Bose–Einstein condensation

Wu,

Qiu,

et al. 2023

InfoMat

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“…Variation of voltage offset with IRT ambient temperature is of particular concern when using uncooled detectors [6]. A mechanical chopper, or shutter, can be used to overcome of 10 drift within IRTs to improve their stability [7,8] but at the expense of increasing the overall instrument cost and size. In addition, IRTs incorporating mechanical chopping also need detectors with lower shunt capacitance.…”

Section: Introductionmentioning

confidence: 99%

Zero Drift Infrared Radiation Thermometer Using Chopper Stabilised Pre-Amplifier

2020

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A zero-drift, mid–wave infrared (MWIR) thermometer constructed using a chopper stabilised operational amplifier (op-amp) was compared against an identical thermometer that utilised a precision op-amp. The chopper stabilised op-amp resulted in a zero-drift infrared radiation thermometer (IRT) with approximately 75% lower offset voltage, 50% lower voltage noise and less susceptibility to perturbation by external sources. This was in comparison to the precision op-amp IRT when blanked by a cover at ambient temperature. Significantly, the zero-drift IRT demonstrated improved linearity for the measurement of target temperatures between 20 °C and 70 °C compared to the precision IRT. This eases the IRT calibration procedure, leading to improvement in the tolerance of the temperature measurement of such low target temperatures. The zero-drift IRT was demonstrated to measure a target temperature of 40 °C with a reduction in the root mean square (RMS) noise from 5 K to 1 K compared to the precision IRT.

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“…Infrared thermometers intended for accurate temperature measurements at low signal intensity use techniques to improve the accuracy and stability of the measurements acquired [ 6 , 30 ], typically: optical chopping of the incoming radiation to provide intermittent dark current measurement, thereby, affording offset compensation; thermoelectric cooling of the sensor to minimize the detector dark current and its drift, and increase the photodiode shunt resistance.…”

Section: Introductionmentioning

confidence: 99%

“…Accommodating these features necessitates an increased thermometer enclosure size and additional electronics for controlling the cooling and undertaking additional signal processing [ 30 ]. Development of an infrared thermometer that used an uncooled sensor and received the radiant signal without optical chopping, but had the capability of measuring machine tool temperatures, would advance machining tool temperature measurement [ 8 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Miniature Uncooled and Unchopped Fiber Optic Infrared Thermometer for Application to Cutting Tool Temperature Measurement

Heeley

Hobbs

Laalej

et al. 2018

Sensors

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A new infrared thermometer, sensitive to wavelengths between 3 μm and 3.5 μm, has been developed. It is based on an Indium Arsenide Antimony (InAsSb) photodiode, a transimpedance amplifier, and a sapphire fiber optic cable. The thermometer used an uncooled photodiode sensor and received infrared radiation that did not undergo any form of optical chopping, thereby, minimizing the physical size of the device and affording its attachment to a milling machine tool holder. The thermometer is intended for applications requiring that the electronics are located remotely from high-temperature conditions incurred during machining but also affording the potential for use in other harsh conditions. Other example applications include: processes involving chemical reactions and abrasion or fluids that would otherwise present problems for invasive contact sensors to achieve reliable and accurate measurements. The prototype thermometer was capable of measuring temperatures between 200 °C and 1000 °C with sapphire fiber optic cable coupling to high temperature conditions. Future versions of the device will afford temperature measurements on a milling machine cutting tool and could substitute for the standard method of embedding thermocouple wires into the cutting tool inserts. Similarly, other objects within harsh conditions could be measured using these techniques and accelerate developments of the thermometer to suit particular applications.

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Exploring novel methods to achieve sensitivity limits for high operating temperature infrared detectors

Cited by 7 publications

References 41 publications

High sensitivity of semimetal photodetection via Bose–Einstein condensation

High sensitivity of semimetal photodetection via Bose–Einstein condensation

Zero Drift Infrared Radiation Thermometer Using Chopper Stabilised Pre-Amplifier

Miniature Uncooled and Unchopped Fiber Optic Infrared Thermometer for Application to Cutting Tool Temperature Measurement

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