Spatial width and power-content ratio of hard-edge diffracted beams.
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.
Martínez-Herrero
Rosario
R
Department of Optics, Faculty of Physics, Complutense University, 28040 Madrid, Spain.
Mejías
Pedro M
PM
Bosch
Salvador
S
Carnicer
Arturo
A