论文信息 - Annular-aperture logarithmic axicon

Annular-aperture logarithmic axicon

Introduction of an annular aperture into an axicon characterized by the logarithmic phase-retardation function, resulted in significant improvement in the uniformity of both lateral resolution and energy flow in comparison with the effect of a full-aperture element. The improved uniformity of the new element was gained at the expense of some efficiency.

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