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2006•Optoelectronic TechnologyRequires access

Measurements of Point Spread Function of Non-diffracting System under Coherent Illuminate

Bin L. Zhao

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Abstract

Based on the theories of non-diffracting imaging system in coherent light,the measurement system of point spread function(PSF) of non-diffracting imaging system has been presented.The form of the PSF has been deduced according to the Fresnel diffraction,and it has been analyzed that the frings density of the PSF depends on the axicon's refracting angle θ and the distance l between the point light source to lens L_2.Experimental results and simulations show that the fringe spacing of the PSF is narrow down with the increasing of θ and l.

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What this paper is about

Based on the theories of non-diffracting imaging system in coherent light,the measurement system of point spread function(PSF) of non-diffracting imaging system has been presented.The form of the PSF has been deduced according to the Fresnel diffraction,and it has been analyzed that the frings density of the PSF depends on the axicon's refracting angle θ and the distance l between the point light source to lens L_2.Experimental results and simulations show that the fringe spacing of the PSF is narrow down with the increasing of θ and l.

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Available abstract

Based on the theories of non-diffracting imaging system in coherent light,the measurement system of point spread function(PSF) of non-diffracting imaging system has been presented.The form of the PSF has been deduced according to the Fresnel diffraction,and it has been analyzed that the frings density of the PSF depends on the axicon's refracting angle θ and the distance l between the point light source to lens L_2.Experimental results and simulations show that the fringe spacing of the PSF is narrow down with the increasing of θ and l.

Key concepts: Axicon, Point spread function, Optics, Physics, Lens (geology), Diffraction, Fresnel diffraction, Point (geometry)

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