Generation of nondiffracting Bessel beam using digital micromirror device

Abstract

We experimentally demonstrated Bessel-like beams utilizing digital micromirror device (DMD). DMD with images imitating the equivalent axicon can shape the collimated Gaussian beam into Bessel beam. We reconstructed the 3D spatial field of the generated beam through a stack of measured cross-sectional images. The output beams have the profile of Bessel function after intensity modulation, and the beams extend at least 50 mm while the lateral dimension of the spot remains nearly invariant. Furthermore, the self-healing property has also been investigated, and all the experimental results agree well with simulated results numerically calculated through beam propagation method. Our observations demonstrate that the DMD offers a simple and efficient method to generate Bessel beams with distinct nondiffracting and self-reconstruction behaviors. The generated Bessel beams will potentially expand the applications to the optical manipulation and high-resolution fluorescence imaging owing to the unique nondiffracting property.

Propagation of Bessel and Airy beams through atmospheric turbulence

“…During propagation the outer rings diffract inward fueling the center of the beam with energy and maintaining constant on-axis intensity. The inward diffraction also results in self-healing of the beam: when the beam's propagation path is partially obstructed the profile can nearly reform itself down-stream [10][11][12][13][14].…”

Specially shaped Bessel-like self-accelerating beams along predesigned trajectories

“…b, d, f The black dashed curves in the beam center lobe indicate the theoretical trajectory. The maps have the same color code to allow direct comparison [37] momentum to the arena of optical beam shaping and applications [55][56][57][58][59][60][61][62][63][64].…”

Enhanced optical alignment of a digital micro mirror device through Bayesian adaptive exploration

“…They have been used for beam shaping, [1][2][3][4][5][6][7] computational imaging, 8,9 the design of compact high-dynamic range cameras 10,11 and numerous other areas of research where manipulation of the spatial distribution of light is beneficial such as polarization, 12 pulse shaping. 13 The application explored here utilizes an SLM as a Fourier plane filter.…”