2012
DOI: 10.1364/josaa.29.000808
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Highly compact imaging using Bessel beams generated by ultraminiaturized multi-micro-axicon systems

Abstract: Employing Bessel beams in imaging takes advantage of their self-reconstructing properties to achieve small focal points while maintaining a large depth of focus. Bessel beams are efficiently generated using axicons, and their utility in scanning imaging systems, such as optical coherence tomography (OCT), has been demonstrated. As these systems are miniaturized to allow, for example, endoscopic implementations, micro-axicons are required to assure the maintenance of a large depth of focus. We demonstrate here … Show more

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Cited by 49 publications
(16 citation statements)
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“…Otherwise the incident beam will be totally internally reflected. Alternatively, systems containing multiple, lower index axicon lenses could be used [43]. However, these systems suffer from increased complexity and size.…”
Section: Generating Tractor Beams With Metasurfacesmentioning
confidence: 99%
“…Otherwise the incident beam will be totally internally reflected. Alternatively, systems containing multiple, lower index axicon lenses could be used [43]. However, these systems suffer from increased complexity and size.…”
Section: Generating Tractor Beams With Metasurfacesmentioning
confidence: 99%
“…Besides this Bessel beam, other non-diffracting solutions1213 including the Airy beam1415 were also discovered. So far, the diffraction-free beams are mainly generated through linear optical methods, such as Fabry-Pérot interferometer16, spatial light modulator17, holographic process18, diffractive phase elements19, axicon20 and surface plasmon polariton (SPP)2122. The experiments using nonlinear optical techniques are less reported232425.…”
mentioning
confidence: 99%
“…limitations on the axicon profile height and thus the axicon angle. To overcome these drawbacks, another technique based on using a multistep micromolding process [21] has been recently proposed. In general, the proposed ideas use complex fabricating processes.…”
mentioning
confidence: 99%
“…Some of them use direct electron beam [9], laser direct writing using two-photon polymerization [18], thin-film deposition methods [19], or masks based on the LC displays [20]; these methods tend to have limitations on the axicon profile height and thus the axicon angle. To overcome these drawbacks, another technique based on using a multistep micromolding process [21] has been recently proposed. In general, the proposed ideas use complex fabricating processes.…”
mentioning
confidence: 99%