Synthesis of multiple collinear helical modes generated by a phase-only element.
Phase-only elements are generally more desirable than complex-amplitude-modulated elements not only because of the higher diffraction efficiency but the readier implementation and fabrication. A novel iterative algorithm is proposed for generating multiple helical modes by a single phase-only element. A superposition of four helical modes is demonstrated experimentally by using a spatial light modulator.
Lin
Jiao
J
Photonics Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore.
Yuan
Xiaocong
X
Tao
Shaohua H
SH
Burge
Ronald E
RE