Young's Interference Experiment with Ultrashort-Pulsed Bessel Beams

Grünwald, R.; Neumann, Uwe; Böck, Martin; Steinmeyer, Günter

doi:10.1109/cleo.2007.4452828

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…For a diffraction-less array beam shaping in the proper sense, the basic idea of self-apodization has to be extended, and one has to distinguish between near-and far-field, i.e., between separated and coupled sub-beams (or, if you like, pure and mixed optical information). In modified Young-type double-slit experiments with near-field needle beams propagated through hard-edged diaphragms, it was found that diffraction can be avoided to a large extent by fulfilling the self-apodization conditions [50]. On the other hand, the superposition of needle beams can be exploited to generate arrays of undistorted wavepackets by purely geometrical (nondiffracting) self-imaging [51].…”

Section: Self-apodization and "Doubly Nondiffracting" Beamsmentioning

confidence: 99%

High-Flexibility Control of Structured Light with Combined Adaptive Optical Systems

et al. 2022

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Combining the specific advantages of high-resolution liquid-crystal-on-silicon spatial light modulators (LCoS-SLMs) and reflective or refractive micro-electro-mechanical systems (MEMS) presents new prospects for the generation of structured light fields. In particular, adaptive self-apodization schemes can significantly reduce diffraction by low-loss spatial filtering. The concept enables one to realize low-dispersion shaping of nondiffracting femtosecond wavepackets and to temporally switch, modulate or deflect spatially structured beams. Adaptive diffraction management by structured illumination is demonstrated for piezo-based and thermally actuated axicons, spiral phase plates (SPPs) and Fresnel bi-mirrors. Improved non-collinear autocorrelation with angular-tunable Fresnel-bi-mirrors via self-apodized illumination and phase contrast of an SLM is proposed. An extension of the recently introduced nondiffractive Talbot effect to a tunable configuration by combining an SLM and a fluid lens is reported. Experimental results for hexagonal as well as orthogonal array beams are presented.

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Section: Self-apodization and "Doubly Nondiffracting" Beamsmentioning

confidence: 99%

High-Flexibility Control of Structured Light with Combined Adaptive Optical Systems

et al. 2022

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“…The configuration is based on a field apodization and was referred to as 'selfapodizing truncation' [2]. As will be demonstrated in paragraph 4, selfapodizing truncation is also an effective way to generate needle pulses with undistorted spectrum and pulse duration [80,119,120].…”

Section: Self-apodizing Truncation Of Bessel Beamsmentioning

confidence: 99%

“…By double slit experiments comparing self-apodized truncation of Bessel beams to plane wave diffraction at circular apertures, nondiffracting propagation of such needle beams was directly monitored [119].…”

Section: Ultrashort Pulsed Needle Beams and Linear Rogue Wavesmentioning

confidence: 99%

Needle beams: a review

Grünwald

Böck

2020

Advances in Physics: X

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Needle beams are highly attractive for applications which take advantage from a spatial and temporal localization of photons. High intensities, high resolution and extended depth of focus lead to fundamental advances in the optical system performance. Ultrashort, fringe-free, self-reconstructing nondiffracting pulses with undistorted temporal transfer are obtained by generating truncated Bessel beams under self-apodization conditions. Nondiffracting Talbot self-imaging of needle beam arrays enables to transfer near field information to the Fraunhofer zone. With addressable arrays of needle beams, reconfigurable time-wavefront sensors are built up. Moreover, spatial light modulators and flexible axicons are used to realize structured, highly localized wavepackets, accelerating beams and nondiffracting images.

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Young's Interference Experiment with Ultrashort-Pulsed Bessel Beams

Abstract: Young's experiment was performed with multiple ultrashort-pulsed Bessel-like beams. The pseudo-nondiffracting nature of such beams is confirmed in a self-apodizing setup, with aperture diameters matched to the first field minimum and significantly reduced diffraction contrast.

Cited by 2 publications

References 4 publications

High-Flexibility Control of Structured Light with Combined Adaptive Optical Systems

High-Flexibility Control of Structured Light with Combined Adaptive Optical Systems

Needle beams: a review

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