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 parabolic mirror by 1 order of magnitude is demonstrated.
© 2006 Optical Society of America
Full Article | PDF ArticleMore Like This
Q. Lin, S. Li, and W. Becker
Opt. Lett. 31(14) 2163-2165 (2006)
Lisa A. Poyneer, Brian Bauman, Bruce A. Macintosh, Daren Dillon, and Scott Severson
Opt. Lett. 31(3) 293-295 (2006)
Yuhua Zhang, Siddharth Poonja, and Austin Roorda
Opt. Lett. 31(9) 1268-1270 (2006)