Abstract
In this paper, a monotonic-increasing-thickness model (MITM) is proposed
for designing cylindrically diffractive focusing micromirrors (DFMs) and cylindrically
diffractive focusing micromirror arrays (arrayed DFMs). Based on rigorous
electromagnetic theory and the boundary element method, numerical results
reveal that focal properties of the designed DFMs are significantly improved
through replacing the traditional equal-thickness model (ETM) with the proposed
MITM, especially in the case of small f-numbers. In addition, the superiority of the MITM to the ETM is
demonstrated in designs of the arrayed DFMs. For interference effect in the
arrayed DFMs, we present new explanations.
© 2013 IEEE
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