title: Reducing aberration effect of Fourier transform lens by modifying Fourier spectrum of diffractive optical element in beam shaping optical system.
abstract: In general, Fourier transform lenses are considered as ideal in the design algorithms of diffractive optical elements (DOEs). However, the inherent aberrations of a real Fourier transform lens disturb the far field pattern. The difference between the generated pattern and the expected design will impact the system performance. Therefore, a method for modifying the Fourier spectrum of DOEs without introducing other optical elements to reduce the aberration effect of the Fourier transform lens is proposed. By applying this method, beam shaping performance is improved markedly for the optical system with a real Fourier transform lens. The experiments carried out with a commercial Fourier transform lens give evidence for this method. The method is capable of reducing the system complexity as well as improving its performance.
authors.forename: Fang
authors.initials: F
authors.lastname: Zhang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Song
authors.forename: Weirui
authors.initials: W
authors.lastname: Yue
authors.forename: Jingdan
authors.initials: J
authors.lastname: Liu
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Guohai
authors.initials: G
authors.lastname: Situ
authors.forename: Huijie
authors.initials: H
authors.lastname: Huang
mesh_terms: D000465:Algorithms; D016477:Artifacts; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005583:Fourier Analysis; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007909:Lenses; D008027:Light; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity