Experimental study of the light absorption in sea water by thermal lens spectroscopy

2nd International Symposium "Optics and its Applications"

Velásquez, A.^1 ; Sira, E.^2 ; Silva, S.^2 ; Cabrera, H.^1,3

Centro Multidisciplinario de Ciencias, Instituto Venezolano de Investigaciones Científicas, Mérida

5101, Venezuela^1

Centro de Oceanografia y Estudios Antárticos, Instituto Venezolano de Investigaciones Cientificas, Caracas

1020-A, Venezuela^2

International Centre for Theoretical Physics, Trieste

34151, Italy^3

关键词: Absorption co-efficient;    Coastal regions;    Concentration determination;    Measurements of;    Optical absorption coefficients;    Sensitive techniques;    Small variations;    Thermal lens spectroscopy;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/672/1/012021/pdf
DOI  :  10.1088/1742-6596/672/1/012021

来源: IOP

【 摘 要 】

Thermal lens spectroscopy is well known as highly sensitive technique enabling measurements of low absorption and concentration determination of various compounds. The optical absorption coefficients of doubly distilled water and samples of water from different places of the open Ocean and different coastal regions have been measured at 532.8 nm wavelength using this technique. The method enables sensitive, rapid and reproducible determination of small variations of the absorption coefficient which are related with small trace contaminations in sea water.