Artículos de revistas
Diffraction of beams by Ronchi rulings: comparison between two methods for gaussian spot size measurements
Diffraction of beams by Ronchi rulings: comparison between two methods for gaussian spot size measurements
Autor
Chávez Rivas, F.
Mata Méndez, O.
Ortíz Acebedo, A.
Hernández Cruz, D.
Lessard, Roger A.
Institución
Resumen
Comparamos experimentalmente dos métodos para la determinación del ancho de una haz gauseano. Los dos métodos emplean una red de difracción de Ronchi donde se considera la energía total transmitida y la energía difractada normalmente. La teoría de la difracción utilizada esta basada en la ecuación integral de Rayleigh-Sommerfeld con las condiciones de Dirichlet. Two independent methods for Gaussian spot size measurement are experimentally compared. The two methods use a Ronchi ruling where the transmitted total power and the normally diffracted energy are considered. We show that the beam widths obtained by these methods are very close. The theory of diffraction used is based on the Rayleigh-Sommerfeld integral equation with Dirichlet condition.