Abstract
The manipulation of structured light beams requires simultaneous spatial modulation of amplitude and phase. Based on the double-phase holography (DPH) algorithm, we demonstrate an efficient reconstruction of Bessel beams with arbitrary on-axis intensity. Also, the off-axis DPH method enables more than doubled laser energy utilization compared with the widely-used off-axis phase wrapping modulation method. The DPH algorithm is also used in two-photon polymerization to enable the rapid fabrication of microtube arrays, ortho-hexagonal scaffolds, and 2D patterned microstructures. This work gives experimental proof to show the powerful feasibility of the DPH method in constructing economic adaptive laser processing systems.
© 2023 Chinese Laser Press
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