Abstract
A two-step method for fabricating miniaperture on-axis holographic lenses with high numerical apertures is presented. The first step is to record a bifocus off-axis master holographic lens using a plane wave and a divergent spherical wave. The second step is to record the miniaperture on-axis holographic lens using the conjugate reconstructed wave of the master holographic lens. A holographic lens array is made in our experiments in which the numerical aperture of each lens in the array reached 0.31.
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