title: 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.
authors.affiliation: Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Gong
authors.forename: Yu-Xuan
authors.initials: YX
authors.lastname: Ren
authors.forename: Guo-Sheng
authors.initials: GS
authors.lastname: Xue
authors.forename: Qian-Chang
authors.initials: QC
authors.lastname: Wang
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Zhou
authors.forename: Min-Cheng
authors.initials: MC
authors.lastname: Zhong
authors.forename: Zi-Qiang
authors.initials: ZQ
authors.lastname: Wang
authors.forename: Yin-Mei
authors.initials: YM
authors.lastname: Li
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D060733:Electromagnetic Radiation; D004867:Equipment Design; D005583:Fourier Analysis; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000295:instrumentation* / Q000379:methods; D008027:Light; D008846:Micromanipulation / Q000295:instrumentation / Q000379:methods; D008853:Microscopy / Q000295:instrumentation* / Q000379:methods; D016011:Normal Distribution; D012984:Software