Collinear superposition of multiple helical beams generated by a single azimuthally modulated phase-only element.
We propose a highly efficient approach to generating multihelix beams that contain more than one helical mode, and the power distribution over helical modes is adjustable. A multihelix beam embedded with three collinear helical modes is demonstrated by use of a spatial light modulator.
Lin
J
J
Photonics Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798.
Yuan
X C
XC
Tao
S H
SH
Burge
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