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journal article·2017-10-01Open access

Z-scan confocal method for indirect focus location

Pablo Castro-Marín, Gustavo Castro-Olvera, Camilo Ruíz, Jesús Garduño-Mejía, Martha Rosete-Aguilar, Neil C. Bruce

AIP Advances· Volume 7· Issue 10
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Source abstract

Abstract

We present a new technique that we have defined as the z-scan confocal method to determine the location and size of the focal spot in a tightly focused ultrashort laser pulse. The method permits accurate positioning of a target in the focal spot with a fast response. The technique is designed to help to automatize the location of an overdense target in focus in a laser plasma experiment and suitable to be implemented in a closed loop configuration setup. The method allows for a fast localization of the focal position and the relative motion of the target with respect to it. As an example of the potential of the technique we have measured the defocusing of a fast rotating disc in several radii to reconstruct the motion of the disc at focus.
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Research context

OpenAlex topics: Laser-Plasma Interactions and Diagnostics · Laser-Matter Interactions and Applications · Advanced X-ray Imaging Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México 1 , Av. Universidad 3000, Coyoacán, Distrito Federal 04510, Mexico

Instituto Universitario de Física Fundamental y Matemáticas y Departamento de Didáctica de la Matemática y de las Ciencias Experimentales, Universidad de Salamanca 2 , Patio de las Escuelas s/n, Salamanca, Spain

Funding

MINECO | Consejo Superior de Investigaciones Científicas · Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México

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