Fractal-like diffractive arrangement with multiple focal points

• Autorzy: Mihailescu M. , Preda A. M. , Sobetkii A. , Petcu A. C.
• Języki publikacji: EN

Abstrakty

EN

In this paper we introduce a diffractive structure with a geometry which contains multiple Fresnel zone plates (MFZP) disposed in an arrangement based on a fractal-like rule. The corresponding diffracted intensity in planes perpendicular to the propagation axe presents two or more focal points. Their position and magnitude depend on geometrical parameters of the MFZP and on dimensions in the fractal-like arrangement. In our simulations we also analyze the influence in diffraction pattern of different non-binary phase levels in the MFZP plane. The MFZP structures with different values of geometrical and phase parameters are addressed to an optoelectronic device liquid crystal spatial light modulator (LCSLM), the experimental and simulation results are in a good agreement. The MFZP geometry with better optical parameters in diffraction pattern is then made on glass using electron beam lithography technique.

Słowa kluczowe

EN

Fresnel zone plates; fractal; diffraction pattern; multiple focal points; spatial light modulator; lithography

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2009
• Tom: Vol. 17, No. 4
• Strony: 330--337
• Opis fizyczny: Bibliogr. 14 poz., wykr., il.

Twórcy

autor

Mihailescu M.

autor

Preda A. M.

autor

Sobetkii A.

autor

Petcu A. C.

• Physics Department, Politehnica University of Bucharest, 060042 Bucharest, Romania,

Bibliografia

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