Share Email Print
cover

Proceedings Paper

Measurement of the aerosol absorption coefficient with the nonequilibrium process
Author(s): Liang Li; Jingxuan Li; Hailong Bai; Baosheng Li; Shanlin Liu; Yang Zhang
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

On the basis of the conventional Jamin interferometer,the improved measuring method is proposed that using a polarization type reentrant Jamin interferometer measures atmospheric aerosol absorption coefficient under the photothermal effect.The paper studies the relationship between the absorption coefficient of atmospheric aerosol particles and the refractive index change of the atmosphere.In Matlab environment, the variation curves of the output voltage of the interferometer with different concentration aerosol samples under stimulated laser irradiation were plotted.Besides, the paper also studies the relationship between aerosol concentration and the time required for the photothermal effect to reach equilibrium.When using the photothermal interferometry the results show that the time required for the photothermal effect to reach equilibrium is also increasing with the increasing concentration of aerosol particles,the absorption coefficient and time of aerosol in the process of nonequilibrium are exponentially changing.

Paper Details

Date Published: 20 February 2018
PDF: 10 pages
Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106971N (20 February 2018); doi: 10.1117/12.2314983
Show Author Affiliations
Liang Li, Hefei Univ. of Technology (China)
Jingxuan Li, Hefei Univ. of Technology (China)
Hailong Bai, Hefei Univ. of Technology (China)
Baosheng Li, Hefei Univ. of Technology (China)
Shanlin Liu, Hefei Univ. of Technology (China)
Yang Zhang, China National Environmental Monitoring Ctr. (China)


Published in SPIE Proceedings Vol. 10697:
Fourth Seminar on Novel Optoelectronic Detection Technology and Application
Weiqi Jin; Ye Li, Editor(s)

© SPIE. Terms of Use
Back to Top