Abstract
Phase engineering of an axicon’s phase transmission function results in an exponential growth of an on-axis intensity of a diffraction-free or Bessel beam. We show that in a lossy medium obeying Beer’s absorption law/exponential intensity decrease, a beam focused by such an optical element propagates with nearly constant intensity while preserving the quasi-diffraction-free property. Absorption-free beams may find applications in illumination, atmospheric propagation, biomedicine/light diffusion in live tissues, and other situations where light absorption hinders beam propagation.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Ilya Golub, Theodore Mirtchev, Jonathan Nuttall, and Dagan Shaw
Opt. Lett. 37(13) 2556-2558 (2012)
Siyu Tu, Jinyu Peng, Zhengang Yang, Jinsong Liu, and Kejia Wang
Opt. Express 30(22) 39976-39984 (2022)
Vygandas Jarutis, Aidas Matijošius, Paolo Di Trapani, and Algis Piskarskas
Opt. Lett. 34(14) 2129-2131 (2009)