Journal of Atmospheric and Environmental Optics, Volume. 14, Issue 6, 401(2019)
Transmission Analysis of Off-Axis High Order Bessel-Gaussian Vortex Beam
The off-axis transmission of high order Bessel-Gaussian vortex beam produced by spiral phase plate (SPP) and axicon is studied, which can provide reference for the off-axis high order Bessel-Gaussian beams’ formation, intensity distribution control, spot location and other practical applications. On the basis of the theory of diffraction, the transmission of the higher order off-axis Bessel-Gaussian beams is simulated and analyzed by using the triple fast Fourier transform (T-FFT) algorithm. The effects of dislocation parameters, topological charge numbers and transmission distances of SPP and the axicon on the beams are considered during the simulation. The analysis shows that the off-axis higher-order Bessel-Gaussian beams have an uneven light intensity distribution. Due to the shift of the axicon, the beams will be shifted as a whole and the uneven distribution of light intensity at different distances is different. Different topological charge only affects the light spot expansion. Various combinations of the off-axis parametric values for SPP and the axicon will generate different light intensity distributions and even dark core’s shifts.
Get Citation
Copy Citation Text
LIU Shenzhe, SONG Zhenjiang, HUANG Xiujun, SHI Dele, JIANG Mingshun, SUIQingmei, FENG Dejun. Transmission Analysis of Off-Axis High Order Bessel-Gaussian Vortex Beam[J]. Journal of Atmospheric and Environmental Optics, 2019, 14(6): 401
Category:
Received: Jul. 19, 2018
Accepted: --
Published Online: Dec. 5, 2019
The Author Email: Shenzhe LIU (liuszint@163.com)