Abstract: Characterizes the propagation of a light wave in a medium in which there is a loss of energy, that is, the electromagnetic wave experiences attenuation, due to various loss mechanisms such as the generation of phonons (lattice waves), photogeneration, free carrier absorption, scattering, etc.
Keywords: Refractive index, Laser Sensor.
References &Academic research:
 Dictionary of Optoelectronics and Photonics, Safa Kasap (University of Saskatchewan, Canada), Harry Ruda (University of Toronto, Canada ), Yann Boucher (ecole Nationale d’Ingénieurs de Brest, France).
 ELECTRO-OPTICS HANDBOOK , McGRAW-HILL, INC. New York San Francisco Washington,D.C. Auckland Bogota´ Caracas Lisbon London Madrid Mexico City Milan Montreal New Delhi San Juan Singapore Sydney Tokyo Toronto.