Advanced trajectory engineering of diffraction-resisting laser beams

Chremmos, Ioannis and Chen, Zhigang and Christodoulides, Demetrios N. and Efremidis, Nikolaos K. (2013) Advanced trajectory engineering of diffraction-resisting laser beams. PHOTOPTICS 2013 - International Conference on Photonics, Optics and Laser Technology, Institute for Systems and Technologies of Information, Control and Communication (INSTICC).

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We introduce an analytical technique for engineering the trajectory of diffraction-resisting laser beams. The generated beams have a Bessel-like transverse field distribution and can be navigated along rather arbitrary curved paths in free space, thus being an advanced hybrid between accelerating and non-accelerating diffraction-free optical waves. The method involves phase-modulating the wavefront of a Gaussian laser beam to create a continuum of conical ray bundles whose apexes define a prespecified focal curve, along which a nearly perfect circular intensity lobe propagates without diffracting. Through extensive numerical simulations, we demonstrate the great flexibility in the design of a gamut of different beam trajectories. Propagation around obstructions and self-healing scenarios are also investigated. The proposed wave entities can be used extensively for light trajectory control in applications such as laser microfabrication, optical tweezers and curved plasma filamentation spectroscopy.

Item Type: Article
Subjects: Q Science > QC Physics
Depositing User: Dr Ioannis Chremmos
Date Deposited: 11 Mar 2013 11:18
Last Modified: 05 May 2017 17:55

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