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QU Jun, MENG Kai, WANG Liu-san, DING Pei-hong, CUI Zhi-feng. Diffraction of Bessel-Gaussian beam passing through annular and circular apertures[J]. LASER TECHNOLOGY, 2008, 32(4): 393-395.
Citation: QU Jun, MENG Kai, WANG Liu-san, DING Pei-hong, CUI Zhi-feng. Diffraction of Bessel-Gaussian beam passing through annular and circular apertures[J]. LASER TECHNOLOGY, 2008, 32(4): 393-395.

Diffraction of Bessel-Gaussian beam passing through annular and circular apertures

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  • Received Date: February 14, 2007
  • Revised Date: June 05, 2007
  • Published Date: August 24, 2008
  • From the Collins formula,the diffraction of Bessel-Gaussian beam passing through circular and annular apertures was studied based on numerical simulation.The results indicate that the axial intensity of Bessel-Gaussian beam through a circular aperture changes with the Fresnel number F periodically;the axial intensity of Bessel-Gaussian beam through an annular aperture attenuates with the F at the function of vibration.When F is the same,the transversal intensity of Bessel-Gaussian beam through a circular aperture distributes more smooth than an annular aperture.The smaller the annular aperture,more obvious is the modulation of transversal intensity;when the annular aperture is equal to the waist of the beam,the transversal intensity is independent of the Fresnel number F.
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