Design of phase-type soft aperture

Mingliang Yao; Jianhong Wu; Kai Wu; Yanfeng Su

doi:10.1117/12.2552355

18 November 2019 Design of phase-type soft aperture

Mingliang Yao, Jianhong Wu, Kai Wu, Yanfeng Su

Proceedings Volume 11188, Holography, Diffractive Optics, and Applications IX; 111882F (2019) https://doi.org/10.1117/12.2552355
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

The diffraction characteristics of phase-type soft aperture with super-Gaussian transmittance were studied. It was proved that the phase-type soft aperture with super-Gaussian transmittance can improve the near-field intensity distribution of the beam and suppress the diffraction of the beam. Genetic algorithm was used to design the phase-type soft aperture, and was compared with the error diffusion algorithm. The design results demonstrates that the phase-type soft aperture designed by the genetic algorithm has a smaller RMS error and can suppress the diffraction modulation of the intensity in a large spatial range.

Citation Download Citation

Mingliang Yao, Jianhong Wu, Kai Wu, and Yanfeng Su "Design of phase-type soft aperture", Proc. SPIE 11188, Holography, Diffractive Optics, and Applications IX, 111882F (18 November 2019); https://doi.org/10.1117/12.2552355

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