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.
Document type :
Journal articles
Complete list of metadatas

https://hal-polytechnique.archives-ouvertes.fr/hal-00554196
Contributor : Thuy Le <>
Submitted on : Monday, January 10, 2011 - 2:32:15 PM
Last modification on : Wednesday, August 7, 2019 - 2:34:15 PM

Identifiers

Collections

Citation

Thomas A. Planchon, W. Amir, J. J. Field, C. G. Durfee, J. A. Squier, et al.. Adaptive correction of a tightly focused, high-intensity laser beam by use of a third-harmonic signal generated at an interface. Optics Letters, Optical Society of America, 2006, 31 (14), pp.2214-2216. ⟨10.1364/OL.31.002214⟩. ⟨hal-00554196⟩

Share

Metrics

Record views

199