Numerical Example of Aperiodic Diffraction Grating

Diffraction grating is periodic module used in many
engineering fields, its geometrical conception gives interesting
properties of diffraction and interferences, a uniform and periodic
diffraction grating consists of a number of identical apertures that are
equally spaced, in this case, the amplitude of intensity distribution
in the far field region is generally modulated by diffraction pattern
of single aperture. In this paper, we study the case of aperiodic
diffraction grating with identical rectangular apertures where theirs
coordinates are modeled by square root function, we elaborate a
computer simulation comparatively to the periodic array with same
length and we discuss the numerical results.

Authors:

• Youssef Khmou
• Said Safi
• Miloud Frikel

Keywords:

• Diffraction grating
• interferences
• amplitude modulation
• laser.

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