Talbot effect
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Self-Focusing and the Talbot Effect in Conformal Transformation Optics Open
Transformation optics has been used to propose various novel optical devices. With the help of metamaterials, several intriguing designs, such as invisibility cloaks, have been implemented. However, as the basic units should be much smalle…
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Spatial Coherence of Spin-Orbit-Coupled Bose Gases Open
Spin-orbit-coupled Bose-Einstein condensates (SOBECs) exhibit two new phases of matter, now known as the stripe and plane-wave phases. When two interacting spin components of a SOBEC spatially overlap, density modulations with periodicity …
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First demonstration of antimatter wave interferometry Open
We have demonstrated wave-particle duality of single positrons in a double-slit-like experiment.
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Arbitrary Energy‐Preserving Control of Optical Pulse Trains and Frequency Combs through Generalized Talbot Effects Open
Trains of optical pulses and optical‐frequency combs are periodic waveforms with deep implications for a wide range of scientific disciplines and technological applications. Recently, phase‐only signal‐processing techniques based upon the …
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On the structure of quadratic Gauss sums in the Talbot effect Open
We report on the detailed derivation of the Gauss sums leading to the weighting phase factors in the fractional Talbot effect. In contrast to previous approaches, the derivation is directly based on the two coprime integers p and q that de…
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Observation of electromagnetically induced Talbot effect in an atomic system Open
We experimentally demonstrate the Talbot effect resulting from the repeated\nself-reconstruction of a spatially intensity-modulated probe field under the\nFresnel near-field regime. By launching the probe beam into an optically\ninduced at…
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High sensitivity X-ray phase contrast imaging by laboratory grating-based interferometry at high Talbot order geometry Open
X-ray phase contrast imaging is a powerful analysis technique for materials science and biomedicine. Here, we report on laboratory grating-based X-ray interferometry employing a microfocus X-ray source and a high Talbot order (35th) asymme…
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Double moiré localized plasmon structured illumination microscopy Open
Structured illumination microscopy (SIM) is a well-established fluorescence imaging technique, which can increase spatial resolution by up to a factor of two. This article reports on a new way to extend the capabilities of structured illum…
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Quasi-Talbot effect with vortex beams and formation of vortex beamlet arrays Open
We study diffraction of Bessel vortex beams with topological charges of ±1 and ±2 and a wavelength of 130 µm on two-dimensional amplitude periodic gratings. Results of simulations and experiments at the Novosibirsk Free Electron Laser faci…
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Simultaneous direct holographic fabrication of photonic cavity and graded photonic lattice with dual periodicity, dual basis, and dual symmetry Open
For the first time, to the authors' best knowledge, this paper demonstrates the digital, holographic fabrication of graded, super-basis photonic lattices with dual periodicity, dual basis, and dual symmetry. Pixel-by-pixel phase engineerin…
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Talbot Effect for Exciton Polaritons Open
We demonstrate, experimentally and theoretically, a Talbot effect for hybrid\nlight-matter waves -- exciton-polariton condensate formed in a semiconductor\nmicrocavity with embedded quantum wells. The characteristic 'Talbot carpet' is\npro…
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Coherent emission from integrated Talbot-cavity quantum cascade lasers Open
We report experimental realization of phase-locked quantum cascade laser (QCL) array using a monolithically integrated Talbot cavity. An array with six laser elements at a wavelength of ~4.8 μm shows a maximum peak power of ~4 W which is m…
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Veiled Talbot Effect Open
A freely propagating optical field having a periodic transverse spatial profile undergoes periodic axial revivals-a well-known phenomenon known as the Talbot effect or self-imaging. We show here that introducing tight spatiotemporal spectr…
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Dual accelerating Airy–Talbot recurrence effect Open
We demonstrate the dual accelerating Airy-Talbot recurrence effect, i.e., the self-imaging of accelerating optical beams, by propagating a superposition of Airy beams with successively changing transverse displacements. The dual Airy-Talbo…
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Discretely programmable microwave photonic filter based on temporal Talbot effects Open
We propose and experimentally demonstrate a reconfigurable microwave photonic filter based on temporal Talbot effects. The microwave signal is first uniformly sampled by a train of optical pulses through electro-optic intensity modulation.…
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The dissipative Talbot soliton fiber laser Open
Talbot effect, characterized by the replication of a periodic optical field in a specific plane, is governed by diffraction and dispersion in the spatial and temporal domains, respectively. In mode-locked lasers, Talbot effect is rarely li…
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Understanding resolution limit of displacement Talbot lithography Open
Displacement Talbot lithography (DTL) is a new technique for patterning large areas with sub-micron periodic features with low cost. It has applications in fields that cannot justify the cost of deep-UV photolithography, such as plasmonics…
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Two-dimensional Talbot effect of the optical vortices and their spatial evolution Open
We report on the experimental and theoretical study of the near-field diffraction of optical vortices (OVs) at a two-dimensional diffraction grating. The Talbot effect for the optical vortices in the visible range is experimentally observe…
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The recent development of soft x-ray interference lithography in SSRF Open
This paper introduces the recent progress in methodologies and their related applications based on the soft x-ray interference lithography beamline in the Shanghai synchrotron radiation facility. Dual-beam, multibeam interference lithograp…
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Integer and fractional electromagnetically induced Talbot effects in a ladder-type coherent atomic system Open
Both integer and fractional electromagnetically induced Talbot effects are experimentally investigated in a coherent rubidium 5S1/2 - 5P3/2 - 5D5/2 ladder-type system. By launching a probe laser into a periodically modulated lattice constr…
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Talbot effect of orbital angular momentum lattices with single photons Open
The self-imaging, or Talbot Effect, that occurs with the propagation of\nperiodically structured waves has enabled several unique applications in\noptical metrology, image processing, data transmission, and matter-wave\ninterferometry. In …
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Electromagnetically induced moiré optical lattices in a coherent atomic gas Open
Electromagnetically induced optical (or photonic) lattices via atomic coherence in atomic ensembles have recently received great theoretical and experimental interest. We here conceive a way to generate electromagnetically induced moire op…
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Colorful radial Talbot carpet at the transverse plane Open
In this work we theoretically and experimentally investigate the diffraction of spatially coherent and collimated white light beam from radial amplitude gratings. Theoretical part of the work is resolved with the Fresnel-Kirchhoff integral…
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Discrete temporal Talbot effect in synthetic mesh lattices Open
We investigate the discrete temporal Talbot effect in a synthetic mesh lattice by employing two coupled fiber loops with different lengths. The lattice consists of the round-trip number and time delay of pulse trains propagating in the fib…
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Two-dimensional linear and nonlinear Talbot effect from rogue waves Open
We introduce two-dimensional (2D) linear and nonlinear Talbot effects. They are produced by propagating periodic 2D diffraction patterns and can be visualized as 3D stacks of Talbot carpets. The nonlinear Talbot effect originates from 2D r…
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Needle beams: a review Open
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 …
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Talbot effect on orbital angular momentum beams: azimuthal intensity repetition-rate multiplication Open
We propose and experimentally demonstrate the azimuthal Talbot effect on orbital angular momentum (OAM) beams. By applying predetermined phases to a number of OAM beams carrying different topological charges, the intensity petal is self-im…
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Improved Reconstruction Technique for Moiré Imaging Using an X-Ray Phase-Contrast Talbot–Lau Interferometer Open
X-ray phase-contrast imaging is a promising method for medical imaging and non-destructive testing. Information about the attenuation, small-angle scattering and phase-shifting properties of an object can be gained simultaneously in three …
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Optomechanically induced grating Open
We suggest a flexible control of the diffraction grating by considering an optomechanical cavity system. The cavity is driven by an external control standing wave and realizes the characteristics of the diffraction grating when the light b…
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Imaging lattice switching with Talbot effect in reconfigurable non-Hermitian photonic graphene Open
By taking advantage of the optical induction method, a non-Hermitian photonic graphene lattice is efficiently established inside an atomic vapor cell under the condition of electromagnetically induced transparency. This non-Hermitian struc…