Igor A. Litvin and Thandeka Mhlanga and Andrew Forbes


“Bessel beams have been extensive studied to date but are always created over a finite region inside the laboratory. Means to overcome this consider multi-element refractive designs to create beams that have a longitudinal dependent cone angle, thereby allowing for a far greater quasi non–diffracting propagation region. Here we outline a generalized approach for the creation of shape-invariant Bessel-like beams with a single phase-only element, and demonstrate it experimentally with a phase-only spatial light modulator. Our experimental results are in excellent agreement with theory, suggesting an easy-to-implement approach for long range, shape-invariant Bessel-like beams.”

Link to Publications Page

Publication: Optics Express

Issue/Year/DOI: Optics Express, Vol 23, Issue 6, pp. 7312- 7319 (2018)
DOI: 10.1364/OE.23.007312