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Updated: Aug 19, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
[Mathematical model of dispersive infrared gas analyzer based on pyroelectric detector]
1School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Abstract:
This paper analyzes the characteristics of the pyroelectric detector based on its working principle. The input andoutput mathematical model of DIGA (Dispersive Infrared Gas Analyzer) system with pyroelectric detector was established according to the design principle of DIGA. We have manufactured a novel multi-gas DIGA on the basis of this model, then pointed out several problems that should be taken into account in the design. Application indicates that this model is of considerable practical value for the design, study, performance analysis and further improvement of DIGA.
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