Designing a Ppb-level Fiber-optic Microphone for Photoacoustic Spectroscopy of Trace Gases
Abstract
We Report Our Progress on the Design of a Highly Sensitive Photoacoustic Spectroscopy Sensor using an Extrinsic Fabry-Perot Interferometer Fiber-Optic Microphone for Detecting Parts-Per-Billion-Level Trace Gas Concentrations. a Theoretical Model is Set Up to Predict the Mechanical Behavior of the Sensor and Extended with a Mathematical Framework for Detecting Gas Concentration from the Generated Acoustic Modes in a Photoacoustic Gas Cell. a Detection Limit Up to 1.55ppb for Nitric Oxide is Predicted based on the Model for a Minimum Detectable Pressure of 2.1μpa√Hz. We Also Investigated Different Frequency Response of Two Different Gas Cells with the Finite Element Method (FEM) using COMSOL for the Fiber-Optic Acoustic Sensor.
Recommended Citation
M. A. Zobair and M. Esmaeelpour, "Designing a Ppb-level Fiber-optic Microphone for Photoacoustic Spectroscopy of Trace Gases," Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 12835, article no. 1283508, Society of Photographic Instrumentation Engineers (SPIE), Jan 2024.
The definitive version is available at https://doi.org/10.1117/12.3003153
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-151066929-1
International Standard Serial Number (ISSN)
1605-7422
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Society of Photographic Instrumentation Engineers (SPIE), All rights reserved.
Publication Date
01 Jan 2024
Comments
Stanford University, Grant None