Beam shaping of focused partially coherent beams by use of the spatial coherence effect.
We demonstrate that when a partially coherent beam with a Gaussian intensity distribution is focused by a lens, the desired partially coherent flat-topped intensity distribution or doughnut-shaped intensity distribution at the geometrical focus can be generated by choice of appropriate form of spectral degree of coherence. We provide a novel approach to beam shaping of a partially coherent beam and offer new schemes for their potential applications such as material processing, optical therapy, and optical tweezers.
Pu
Jixiong
J
Department of Electronic Science & Technology, Huaqiao University, Quanzhou, Fujian 362021, China. jixiong@hqu.edu.cn
Nemoto
Shojiro
S
Liu
Xiaoyun
X