Z-scan confocal method for indirect focusing location
Instrumentation and Detectors
2017-05-01 v1 Optics
Abstract
We present a new technique that we have defined as the z-scan confocal method to determine the absolute location and size of the focal spot in a tight focused ultrashort laser pulse. The method permits to accurately position 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. 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 capacities we measure the defocusing of a fast rotating disc in several radius to reconstruct the motion of the disc at focus.
Cite
@article{arxiv.1704.08766,
title = {Z-scan confocal method for indirect focusing location},
author = {P. Castro-Marín and G. Castro-Olvera and C. Ruíz and J. Garduño-Mejía and M. Rosete-Aguilar and N. C. Bruce},
journal= {arXiv preprint arXiv:1704.08766},
year = {2017}
}
Comments
submitted to Review of Scientific Instruments