Generation of an arbitrary order Bessel beam in FDTD for time domain calculation

Zhefeng Wu; Jiajie Wang; Paul Briard; Yiping Han; Antao Chen; Wenjuan Zhao; Yongchang Jiao

doi:10.1117/12.2533457

17 May 2019 Generation of an arbitrary order Bessel beam in FDTD for time domain calculation

Zhefeng Wu, Jiajie Wang, Paul Briard, Yiping Han, Antao Chen, Wenjuan Zhao, Yongchang Jiao

Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111701M (2019) https://doi.org/10.1117/12.2533457
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China

Abstract

An arbitrary order Bessel beam with arbitrary incidence is generated numerically in finite-difference time-domain (FDTD) method using a total-field/scattered-field (TF/SF) approach. This is implemented by decomposition of Bessel beam into a series of plane waves, which are projected into the FDTD simulation domain. The off-axis incidence case is realized by tuning the arrival time when the elementary plane wave gets to the center area of simulation domain, and the oblique incidence case is implemented by rotating the plane waves through Euler angles. Numerical examples concerning backscattering radar cross-sections (RCS) are presented to demonstrate the validity, accuracy, and capability of the proposed method. The results in this paper provide an efficient way to investigate the interactions of Bessel beams and particles with complex shape and composition using FDTD.

Citation Download Citation

Zhefeng Wu, Jiajie Wang, Paul Briard, Yiping Han, Antao Chen, Wenjuan Zhao, and Yongchang Jiao "Generation of an arbitrary order Bessel beam in FDTD for time domain calculation", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111701M (17 May 2019); https://doi.org/10.1117/12.2533457

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KEYWORDS

Bessel beams

Finite-difference time-domain method

Optical simulations

Optical spheres

Scattering

Backscatter

Particles

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