Bessel-like beams with z-dependent cone angles
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Updated: Jun 16, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Vladimir Belyi1, Andrew Forbes, Nikolai Kazak
1BI Stepanov Institute of Physics, NASB, 68, Nezavisimosti ave, 220072 Minsk, Belarus. lod@dragon.bas-net.by
Abstract:
The conventional means of generating Bessel-Gauss beams by axicons in the laboratory results in the distinct disadvantage of an abrupt change in intensity at the boundary of the non-diffracting region. We outline theoretically and then demonstrate experimentally a concept for the creation of Bessel-like beams that have a z-dependent cone angle, thereby allowing for a far greater quasi non-diffracting propagation region.
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