Simultaneous Generation of Complex Structured Curve Beam

Abstract

At present, people are using holographic technologies to shape complex optical beams for both fundamental research and practical applications. However, most of the reported works are focusing on the generation of a single beam pattern based on the computer-generated hologram (CGH). In this paper, we present a method for simultaneously shaping the multiple beam lattice where the intensity and phase of each individual beam can be prescribed along an arbitrary geometric curve. The CGH that is responsible for each individual beam is calculated by using the holographic beam shaping technique, afterwards all the CGHs are multiplexed and encoded into one phase-only hologram by adding respective linear phase grating such that different curves are appeared in different positions of the focal regions. We experimentally prove that the simultaneous generation of multiple beams can be readily achieved. The generated beams are especially useful for applications such as multitasking micro-machining and optical trapping.

Generalized perfect optical vortices along arbitrary trajectories

“…The pioneering work has excited intense research on OVs in various applications including * Authors to whom any correspondence should be addressed. manipulation of microparticles [3][4][5][6][7][8][9][10], optical communication [11,12], quantum information [13][14][15], plasma diagnostics [16][17][18], optical imaging and probing [19], and plasmonics [20,21]. Among these applications, the widely used vortex beams, such as Laguerre-Gaussian beams and Bessel beams, have the radii of their annular rings determined by their topological charges.…”