The effects that quartic phase distortions produce in the beam-quality parameter of partially coherent symmetric-intensitybeams are studied. An analytical expression for the beam-quality parameter at the output plane of a pure phase plate with quartic phase aberration has been derived. Explicit conditions to improve the beam quality are provided, and the corresponding optimized beam-quality value that can be attained for a given field has been determined.
© 1992 Optical Society of America
R. Martínez-Herrero, P. M. Mejías, and G. Piquero, "Quality improvement of partially coherent symmetric-intensity beams caused by quartic phase distortions," Opt. Lett. 17, 1650-1651 (1992)