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Journal articles
Adaptive correction of a tightly focused, high-intensity laser beam by use of a third-harmonic signal generated at an interface
Abstract : By using the third-harmonic signal generated at an air-dielectric interface, we demonstrate a novel way of correcting wavefront aberrations induced by high-numerical-aperture optics. The third harmonic is used as the input physical parameter of a genetic algorithm working in closed loop with a 37-actuator deformable mirror. This method is simple and reliable and can be used to correct aberrations of tightly focused beams, a regime where other methods have limitations. Improvement of the third-harmonic signal generated with an f/1.2 parabolic mirror by 1 order of magnitude is demonstrated.
https://hal-polytechnique.archives-ouvertes.fr/hal-00554196
Contributor : Thuy Le Connect in order to contact the contributor
Submitted on : Monday, January 10, 2011 - 2:32:15 PM
Last modification on : Friday, December 3, 2021 - 11:34:03 AM
Contributor : Thuy Le Connect in order to contact the contributor
Submitted on : Monday, January 10, 2011 - 2:32:15 PM
Last modification on : Friday, December 3, 2021 - 11:34:03 AM