Two-channel IR gas sensor with two detectors based on LiTaO3 single-crystal wafer

Zhang, Wendong; Tan, Qiulin; Liu, Jun; Chenyang, Xue; Xiong, Jijun; Chou, Xiujian

doi:10.1016/j.optlastec.2010.03.014

Cited by 19 publications

(2 citation statements)

References 15 publications

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“…With provided 0.15Mean Spherical Candela Power (MSCP) radiation intensity of IR filament, signal estimation was estimated for emitted light intensity value for reference channel (0.52W) as well as at CO2 channel (0.35W). Ray tracing analysis was carried out in ZEMAX for various gas cell design geometries to identify the reflection loss and availability of signal at detector end [2] . Ray tracing analysis was carried out considering numbers of reflections from inside the walls, the total path length of light to travel from source end to detector end, and the incidence angle at the detector for every single ray hitting the detector [3] .…”

Section: Conceptualization / Methodologymentioning

confidence: 99%

Development and characterization of NDIR-based CO₂ sensor for manned space missions

Shah¹,

Fuke²,

Upadhyay³

et al. 2016

SPIE Proceedings

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Trace gas monitoring system inside the crew cabin of manned space shuttle requires high precision sensor instrumentation with quick response, smaller mass, compact and less power consumption. Trace gases like Carbon dioxide and carbon monoxide are the primary gases whose concentration required to be measure precisely and continuously inside the crew cabin to mitigate hazardous accidental events to occur. Conventional chemical reaction based or mass spectro meter based instruments for monitoring these gases are either bulky or relatively slower in response. Compared to that, Non Dispersive Infrared sensor (NDIR) technique is accurate, quick in response and compact. This paper covers design and realization of indigenously developed proto model Carbon Dioxide sensor based on NDIR technique. Developed sensor has resolution of better than 1ppm with measurement range from 0 to 5% Vol.

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Section: Conceptualization / Methodologymentioning

confidence: 99%

Development and characterization of NDIR-based CO₂ sensor for manned space missions

Shah¹,

Fuke²,

Upadhyay³

et al. 2016

SPIE Proceedings

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show abstract

“…The lower detection level of the system (3% in air) can be further improved by using high power laser, increasing the detection area (increasing lasing spot size), and multiple path gas detection by mirror arrangement Jun et al, 2011;Massie et al, 2006;Wendong et al, 2010) etc if the measurement environment warrants. It is evident from the results that the proposed system can detect methane at lower concentrations (3%) than the explosion level (5%).…”

Section: Sensor Response and Methane Concentrationmentioning

confidence: 99%

A Novel and Efficient Optical Device for Mitigating Methane Emission Risks in Geological and Built-in Environment

Roy,

Desikan,

Duttagupta

2023

Preprint

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Methane, the most deleterious greenhouse gas causes multi-dimensional damage footprint from local to global scales. This necessitates detection of its source and quantifying of its concentration. Widely used compact chemical sensors are sensitive to broad-spectrum of gases, degrade fast and slow in response. Which limits its efficiency in tracing its sources within geological/mine/reclaimed and built-in environments. Contrary, optical sensors are very fast, precisely measures the methane concentration and its flux, and deployable in above mentioned environments. Conventionally, costly InGaAs sensors are used in optical-detectors due to its sensitivity in near Infra-red region (1000–2500 nm). Here, we report development of an efficient spectroscopy-based cost-effective sensor which is methane specific, fast response time and has tremendous application potential in tracking the methane source in above environments. The detector, NiSi Schottky diode, was designed, fabricated, and characterized exclusively for the 1.65 µm, narrow bandwidth methane absorption wavelength. The sensor system, which is of 20 cm length includes a laser source and the NiSi detector. This probe can be easily deployed in boreholes, mine vents and soil layers for measuring real-time fluxes in methane concentrations. From the experiments it is observed that the detection limits of the developed device are very low (3% by volume) and the response time of detection is about 2 seconds. Based on the materials used, fabrication procedures adopted, sensitivity of the device and its compactness, the developed device can be considered as a novel, economic device for effectively measuring and targeting the methane source in above mentioned environment.

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Efficient thermal utilization in MEMS bulk micromachined pyroelectric infrared sensor using thermal oxide thin layer

et al. 2017

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Two-channel IR gas sensor with two detectors based on LiTaO3 single-crystal wafer

Cited by 19 publications

References 15 publications

Development and characterization of NDIR-based CO₂ sensor for manned space missions

Development and characterization of NDIR-based CO₂ sensor for manned space missions

A Novel and Efficient Optical Device for Mitigating Methane Emission Risks in Geological and Built-in Environment

Efficient thermal utilization in MEMS bulk micromachined pyroelectric infrared sensor using thermal oxide thin layer

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Two-channel IR gas sensor with two detectors based on LiTaO3 single-crystal wafer

Cited by 19 publications

References 15 publications

Development and characterization of NDIR-based CO2 sensor for manned space missions

Development and characterization of NDIR-based CO2 sensor for manned space missions

A Novel and Efficient Optical Device for Mitigating Methane Emission Risks in Geological and Built-in Environment

Efficient thermal utilization in MEMS bulk micromachined pyroelectric infrared sensor using thermal oxide thin layer

Contact Info

Product

Resources

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Development and characterization of NDIR-based CO₂ sensor for manned space missions

Development and characterization of NDIR-based CO₂ sensor for manned space missions