Generation and characterization of an array of Airy-vortex beams

Abstract

We present the experimental generation and analysis of both the intensity and phase of an optical vortex beam originating from a superposition of Airy-vortex beams. A new theoretical proposal is accessible to generate an array of Airy-vortex beams (AiVBs) from a superposition of N identical AiBs symmetrically located with respect to the propagation axis, where each beam is superimposed with OV and are characterized by the same topological charge l. Additionally, a single experimental apparatus enables both the optical generation and reconstruction of computer-generated holograms implemented on a spatial light modulator and its phase analysis by digital holography. The experimental results agreed with the theoretical predictions. The array of Airy-vortex beams has potential applications for trapping and rotating micro-particles in optical tweezers, modulation in optics communications, optical metrology, and others in optics and photonics. arXiv:1909.05031v1 [physics.optics]

Experimental optical trapping of microparticles with an Airy beams array using a Holographic Optical Tweezer

“…The computer-generated holograms of these special beams are calculated and implemented in spatial light modulators and reconstructed optically in a holographic setup. These methods have generated experimental results of high quality and fidelity optical beams reconstruction compared to the theoretical predicted, because the holographic technique is an extremely accurate tool in the reconstruction of amplitude and phase of optical waves [13,12,15]. Particularly, in this work from the field that described the Airy beams Eq.…”

“…On the other hand, the study of non-diffracting waves or diffraction-resistant waves in optics are special optical beams that keep their intensity spatial shape during propagation. Non-diffracting beams include Bessel beams, Airy beams and others [9,10,11,12]; as well as the superposition of these waves can produce very special structured light beams [13,14,15]. These special optical beams present very interesting properties and could be applied in many fields in optics and photonics.…”

Propagation dynamics of radially polarized symmetric Airy beams in the fractional Schrödinger equation

“…The fractional-diffraction operator in Eq. ( 1) is defined by the known integral expression [16][17]36],…”

“…The spectral phase of the two-dimensional (2D) SAB features a quadratic pattern. SABs demonstrate strong autofocusing in the course of the propagation, which offers additional possibilities for applications to optical trapping and manipulations [14][15][16][17][18][19].…”

Intensity Distribution of Partially Coherent Array Finite Airy Beams Propagating in Atmospheric Turbulence

“…In 2017, Lu et al investigated the generation of coherent and incoherent Airy beam arrays and the comparisons of their scintillation characteristics in atmospheric turbulence, and they pointed out that the incoherent Airy beam arrays have a smaller scintillation index than the coherent one in the same turbulent condition due to the coherence reduction of the constituent beamlets [14]. In 2020, Suarez et al presented the experimental generation and analysis of both the intensity and phase of an optical vortex beam originating from a superposition of Airy-vortex beams [15]. However, as far as we know, there are few studies on the evolution rules of the partially coherent array finite Airy beams (PCAFABs) in atmospheric turbulence.…”