Generation of higher-order Bessel beams by spiral slits using digital micromirror device

  • Roger Jamilarin National Institute of Physics, University of the Philippines Diliman
  • Dina Grace Calbero Banguilan National Institute of Physics, University of the Philippines Diliman
  • Nathaniel Hermosa National Institute of Physics, University of the Philippines Diliman

Abstract

We generate higher-order Bessel beams (HOBBs) from spiral slits programmed in a digital micromirror device (DMD). Using particular spiral slit widths and extents results in the presence of a central dark core on the intensity profile of the generated vortex beams, a prominent feature of HOBBs. Such a feature arises because the spiral shape of the slit induces an azimuthal phase change on the incoming plane wave. By modulating the shape of the spiral slits, HOBBs of different orbital angular momentum (OAM) content are produced. We believe that our study provides a fast and direct method to generate OAM-carrying vortex beams convenient for various applications such as optical tweezing, laser physics, and optical communication.

Published
2020-09-08
How to Cite
[1]
R. Jamilarin, D. G. Banguilan, and N. Hermosa. Generation of higher-order Bessel beams by spiral slits using digital micromirror device, Proceedings of the Samahang Pisika ng Pilipinas 38, SPP-2020-3G-02 (2020). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2020-3G-02.
Section
2D/3G Optics and Photonics (Short Presentations)