Generation and interference collapse of distortion-less fs pulses in free space by Fresnel sources

Nyitray, G.; Mathew, Vincent; Kukhlevsky, S. V.

doi:10.1016/j.optcom.2007.10.053

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…However we point out the decisive role of the structured medium in order to achieve the subwavelength beamsizes: these wavefields cannot be sustained in free space for ranges longer than a wavelength. Relevant aspects in near-field subwavelength nondiffracting beams are exhaustively investigated by Kukhlevsky and co-workers [40][41][42][43].…”

Section: Discussionmentioning

confidence: 99%

Surface-assisted ultralocalization in nondiffracting beams

Miret¹,

Zapata–Rodríguez²

2010

Preprint

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We present a family of localized radiation modes in multilayered periodic media, where in-phase superposition of p-polarized waves leads to radiative confinement around the beam axis. Excitation of surface plasmon polaritons yields an enhanced localization normally to the interfaces. On the other hand, the spectral filtering induced by the presence of bandgaps allows to achieve transverse superresolution on the interfaces. Subwavelength beamwidths along an infinitely long distance might potentially be obtained.

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Section: Discussionmentioning

confidence: 99%

Surface-assisted ultralocalization in nondiffracting beams

Miret¹,

Zapata–Rodríguez²

2010

Preprint

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“…Many solutions have been proposed to overcome this limit, that is, to eliminate its effect, such as photoactivatable localization microscopy [1] (PALM), stimulated emission depletion [2] (STED), surface plasmon polaritons [3] (SPPs), various nanostructures such as the recently discovered microspheres [4], or the diffraction-free wave solutions [5][6][7][8][9][10][11][12][13][14]. Ultrashort diffraction-free pulses can also be produced [18,20,21]. Diffraction-free light beams can be defined as beams with no diffractive broadening throughout the free-space propagation.…”

Section: Introductionmentioning

confidence: 99%