Journal ArticleDOI
Characterization of Bessel beams generated by polymeric microaxicons
TLDR
In this paper, the focal length and the depth of focus of the axicon lens of a polymeric microaxicon were measured, and the full width at half maximum of the beam was obtained.Abstract:
We present a quick, simple and accurate digital holographic characterization of the Bessel beams produced by polymeric microaxicons. This technique allows the numerical reconstruction of both intensity and phase of the beam at whichever point starting from a single acquired hologram. From these data, it is possible to go back to the axicon structure, and to gather information about their characteristics. In particular, the focal length and the depth of focus of the axicon lens are experimentally measured, and the full width at half maximum of the beam is obtained too. The depth of focus, very large for a Bessel beam with respect to a Gaussian one, is successfully exploited for optical trapping of micrometric objects.read more
Citations
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Patent
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Journal ArticleDOI
Digital Holography, a metrological tool for quantitative analysis: Trends and future applications
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Method and device for the laser-based machining of sheet-like substrates
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References
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Journal ArticleDOI
The Axicon: A New Type of Optical Element
TL;DR: The axicon autocollimator as discussed by the authors is a projector which projects a straight line of images into space, and it can be used to determine the perpendicularity of a mirror.
Journal ArticleDOI
Simultaneous micromanipulation in multiple planes using a self-reconstructing light beam
TL;DR: Bessel beams do not diverge and, furthermore, if part of the beam is obstructed or distorted the beam reconstructs itself after a characteristic propagation distance, which may be utilized within optical tweezers to trap particles in multiple, spatially separated sample cells with a single beam.
Journal ArticleDOI
Optical micromanipulation using a Bessel light beam
TL;DR: In this paper, the authors demonstrate a technique for optical manipulation of micron-sized particles, including biological samples, using a zeroth-order Bessel light beam, which offers a non-diffracting focal line of light.
Journal ArticleDOI
High-resolution optical coherence tomography over a large depth range with an axicon lens.
TL;DR: This work reports on the incorporation of an axicon lens into the sample arm of an interferometer to overcome the trade-off between lateral resolution and focusing depth when conventional optical elements are used.
Journal ArticleDOI
Whole optical wavefields reconstruction by digital holography.
Simonetta Grilli,Pietro Ferraro,S. De Nicola,Andrea Finizio,Giovanni Pierattini,Riccardo Meucci +5 more
TL;DR: It is shown that this technique can be efficiently used for obtaining quantitative information from the intensity and the phase distributions of the reconstructed field at different locations along the propagation direction.