Abstract
We investigated the focusing properties of a cylindrically polarized annular multi Gaussian beam tightly focused with a high NA lens and a complex phase filter. It is observed that a properly designed complex phase filter can generate multiple focal spot and focal hole segments along optical axis its useful for the manipulation of multiple optical traps of low and high refractive index particles.
Highlights
There is an increasing interest in the spatially inhomogeneous polarization, mostly driven by the advances made in micro-fabrication techniques and theoretical modeling techniques that were not available homogeneous polarization
We investigated the focusing properties of a cylindrically polarized annular multi Gaussian beam tightly focused with a high NA lens and a complex phase filter
One example of such spatially inhomogeneous polarization that has attracted much of the interest is the socalled cylindrical vector (CV) beams
Summary
There is an increasing interest in the spatially inhomogeneous polarization, mostly driven by the advances made in micro-fabrication techniques and theoretical modeling techniques that were not available homogeneous polarization One example of such spatially inhomogeneous polarization that has attracted much of the interest is the socalled cylindrical vector (CV) beams. 39 Page 2 of 9 polarization into a generalized cylindrical vector beam, or vice versa (Zhan and Leger 2002; Friedman et al 2002). In 2002, two dimensional arrays of focal spots are formed by multi beam systems (Eriksen et al 2002) It is just for two dimensional particles trapping.
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