Tight Focusing of Partially Coherent Vortex Beams

Figure 2

Intensity distribution of uniformly polarized vortex beams at the focal plane of an air aplantic lens with NA=0.9: with 𝑚=1 and 𝛽=𝜋/2 for (a) 𝜇_𝑜=0.5(b) 𝜇_𝑜=0.8; for 𝑚=2 and 𝛽=𝜋/2 with (c) 𝜇_𝑜=0.5(d) 𝜇_𝑜=0.8; degree of polarization for 𝑚=1 and 𝛽=𝜋/2for (e) 𝜇_𝑜=0.5(f) 𝜇_𝑜=0.8; for 𝑚=2 and 𝛽=𝜋/2 with (g) 𝜇_𝑜=0.5(h) 𝜇_𝑜=0.8.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)