Tight-focusing properties of the chirp modulation linearly polarized circular Airy Gaussian vortex beam

Ouyang, Xueying

doi:10.1016/j.rinp.2021.105119

Cited by 8 publications

(1 citation statement)

References 35 publications

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“…These beam-shaping schemes are desirable for many applications, such as optical data storage, microscope, particle capture, and material processing. Thus, many research efforts have been made to study the tight-focusing properties of the laser beams of different types in these years [16][17][18][19][20][21][22][23][24]. Considering the self-focusing property and unique phase structure of CPRPB, it will be a significant work to explore its tight-focusing properties.…”

Section: Introductionmentioning

confidence: 99%

Tight Focusing Properties of Ring Pearcey Beams with a Cross Phase

Huang

et al. 2022

Photonics

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We theoretically investigated the properties of tightly focused ring Pearcey beams with a cross phase (CPRPB). The expressions of the distributions of both electric field and magnetic field in the focal region of an objective were first derived from the vectorial Debye theory, and then numerical calculations were carried out to obtain the focused intensity distribution and the Poynting vector of CPRPB near the focus. Numerical calculations indicate that as CPRPB is focused on an objective of high numerical aperture (NA), two nonuniform self-focusing spots occur at both sides of the geometrical focus of the objective symmetrically, and the angle between their directions is 90 degrees. The stronger is the strength of cross-phase modulation, the flatter are the ellipses of the self-focusing spots, and the smaller is the intensity at the geometrical focus of the objective. Numerical calculations also demonstrate that the optical gradient force produced by tightly focused CPRPB in the focal region can be manipulated in magnitude and in direction by tuning the strength of cross-phase modulation. Due to these properties of tightly focused CPRPB, they might find applications in the manipulation of micro- and nanoparticles and so on.

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