Calibration of a CO₂ laser-based ethylene photoacoustic detector

Authors

Raymund Sarmiento Department of Physics, University of San Carlos
Dioscoro Villagonzalo Department of Physics, University of San Carlos
Adonis Flores Department of Physics, University of San Carlos
Erwin Orosco Department of Physics, University of San Carlos
Roland Otadoy Department of Physics, University of San Carlos
Ben Zuidberg Department of Physics, University of San Carlos
Cor Sikkens Department of Molecular and Laser Physics, Radboud University, The Netherlands

Abstract

We have calibrated an extracavity CO₂ laser-based photoacoustic detector for ethylene. The 10P₁₄ line at 943.43 cm⁻¹ was selected as it is highly absorbed by ethylene molecules. The measured absorption coefficient is (34 ± 1.8) cm⁻¹atm⁻¹. The detector yields a photoacoustic signal of (3.6 ± 0.16) mV/W per 1 ppm of ethylene. A measurement of ethylene emitted by an overripe banana was done to demonstrate its sensitivity.

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Issue

2005: Proceedings of the 23rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2005-PB-37

Section

Poster Session PB

Published

2005-10-26

How to Cite

[1]

R Sarmiento, D Villagonzalo, A Flores, E Orosco, R Otadoy, B Zuidberg, and C Sikkens, Calibration of a CO2 laser-based ethylene photoacoustic detector, Proceedings of the Samahang Pisika ng Pilipinas 23, SPP-2005-PB-37 (2005). URL: https://proceedings.spp-online.org/article/view/SPP-2005-PB-37.