Effective Fresnel diffraction field extension of diffractive optical elements with plane wave incidence

Diffractive optical elements (DOEs) are widely used to realize special diffraction fields today, but the size of the effective Fresnel diffraction field of the DOEs with plane wave incidence is limited by the wavelength of the incident beam, sampling interval of the DOE, and distance between the DOE...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied optics (2004) 2020-04, Vol.59 (11), p.3427-3431
Hauptverfasser: Kong, Zhe, Xu, Ning, Xiao, Huan, Tan, Qiaofeng
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Diffractive optical elements (DOEs) are widely used to realize special diffraction fields today, but the size of the effective Fresnel diffraction field of the DOEs with plane wave incidence is limited by the wavelength of the incident beam, sampling interval of the DOE, and distance between the DOE and the output plane. In this paper, a method is proposed to extend the size of the effective Fresnel diffraction field with an introduced intermediate plane and two-step diffraction calculation. Zero padding is used on the DOE plane, the sampling interval on the intermediate plane is correspondingly decreased, and the size of the Fresnel diffraction field on the output plane is finally extended. The accompanying aliasing is eliminated by placing a low-pass filter on the intermediate plane. Both numerical simulations and experimental results show the validity of the proposed method to extend the size of the effective Fresnel diffraction field of the DOEs with plane wave incidence.
ISSN:1559-128X
2155-3165
1539-4522
DOI:10.1364/AO.387646