title: Spatial width and power-content ratio of hard-edge diffracted beams.
abstract: On the basis of the intensity-moment formalism, certain analytical relationships are obtained for both the angular domain and the size of a transverse region of the beam that ensure a power content of at least 75% of the total power. As an illustrative application, the analytical results are compared with the exact values (numerically computed) of the amplitude of a lowest-order Gaussian beam diffracted by slits.
authors.affiliation: Department of Optics, Faculty of Physics, Complutense University, 28040 Madrid, Spain.
authors.forename: Rosario
authors.initials: R
authors.lastname: Martínez-Herrero
authors.forename: Pedro M
authors.initials: PM
authors.lastname: Mejías
authors.forename: Salvador
authors.initials: S
authors.lastname: Bosch
authors.forename: Arturo
authors.initials: A
authors.lastname: Carnicer