Reconstructing the Spatial Parameters of a Laser Beam Using the Transport-of-Intensity Equation

A simple method for reconstructing the spatial parameters of a laser beam, based on the transport-of-intensity equation, is presented. Registration of cross-section intensity distributions in several planes was carried out using a single CMOS camera. The processing of the experimental measurements w...

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Detalles Bibliográficos
Autores principales: Kovalev, Michael, Gritsenko, Iliya, Stsepuro, Nikita, Nosov, Pavel, Krasin, George, Kudryashov, Sergey
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8914996/
https://www.ncbi.nlm.nih.gov/pubmed/35270915
http://dx.doi.org/10.3390/s22051765
Descripción
Sumario:A simple method for reconstructing the spatial parameters of a laser beam, based on the transport-of-intensity equation, is presented. Registration of cross-section intensity distributions in several planes was carried out using a single CMOS camera. The processing of the experimental measurements with the help of specialized software helped to reconstruct all of the spatial parameters, namely, the radius and position of the waist, Rayleigh length, angular divergence, quality parameter [Formula: see text] The method was compared with measurements made according to the international standard ISO 11146 and showed that the difference in the spatial parameters is 10% or less, which shows good agreement.

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