“…In fact, it is more interesting to study these beams through an annular aperture because the annular apertured optical system represents a more general case and the unapertured circular aperture, or black screen, could be regarded as a special case. So far, researchers have discussed the propagation properties for kinks of beams through the annular aperture in some of the literature, such as Gaussian beams, Laguerre-Gaussian beams, Bessel-Gaussian beams, Hermite-Gaussian beams, flattened Gaussian beams, flattopped Mathieu-Guassian beams and the beams generated by a Gaussian mirror resonator [2][3][4][5][6][7][8][9]. In addition, the propagation of vectorial nonparaxial Gaussian beams and generalized, astigmatic elliptical Gaussian beams through an annular aperture have also been studied [10,11].…”