THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source

Rohrbach, David; Schroeder, C. B.; Pizzi, Andrea; Tarkeshian, R.; Hayati, Mozhgan; Leemans, Wim; Feurer, Thomas

doi:10.1103/physrevaccelbeams.22.090702

Cited by 6 publications

(5 citation statements)

References 37 publications

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“…[9] for an analysis of the dynamics therein). Second, a concept similar to microwave [52], terahertz [53] or laser [54] driven undulators which uses a non-synchronous DLA structure that does not fulfill eq. (1.1).…”

Section: Tilted Grating Designmentioning

confidence: 99%

Beam dynamics in dielectric laser acceleration

Niedermayer¹,

Leedle²,

Musumeci³

et al. 2022

J. Inst.

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We discuss recent developments and challenges of beam dynamics in Dielectric Laser Acceleration (DLA), for both high and low energy electron beams. Starting from ultra-low emittance nanotip sources the paper follows the beam path of a tentative DLA light source concept. Acceleration in conjuction with focusing is discussed in the framework of Alternating Phase Focusing (APF) and spatial harmonic ponderomotive focusing. The paper concludes with an outlook to the beam dynamics in laser driven nanophotonic undulators, based on tilted DLA grating structures.

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Section: Tilted Grating Designmentioning

confidence: 99%

Beam dynamics in dielectric laser acceleration

Niedermayer¹,

Leedle²,

Musumeci³

et al. 2022

J. Inst.

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“…The first term ξ x a 0 with a 0 ∝ λ 0 represents the deflection induced by the transverse field component. Electromagnetic RF [4], MIR [6], and THz [5] driven undulators use this effect to wiggle the particle beam. Since DLA structures use NIR wavelengths λ 0 ∼ 2 µm and typically k x k und the influence of the first term is negligibly small compared to the second term ξ z a 0 k x /k und .…”

Section: Dla Undulator Latticementioning

confidence: 99%

“…With a typical period length of about one centimeter, magnetic undulators reach several tens to hundreds of meters total length. Active undulator designs use microwave [4], terahertz [5], or optical [6] electromagnetic fields to drive a wiggling motion of the electron beam. In order to miniaturize accelerator light sources, especially optical laser undulators are a promising concept since they potentially reach GeV/m acceleration and deflection gradients which allow to realize ultrashort undulator periods [7].…”

Section: Introductionmentioning

confidence: 99%

Design Study of a Dielectric Laser Undulator

Schmid,

Niedermayer

2022

Preprint

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Dielectric laser acceleration (DLA) achieves remarkable gradients from the optical near fields of a grating structure. Tilting the dielectric grating with respect to the electron beam leads to deflection forces and the DLA structure can be utilized as a microchip undulator. We investigate the beam dynamics in such structures analytically and by numerical simulations. A crucial challenge is to keep the beam focused, especially in direction of the narrow channel. An alternating phase focusing scheme is optimized for this purpose and matched lattice functions are obtained. We distinguish synchronous operation with phase jumps in the grating and asynchronous operation with a strictly periodic grating and well-designed synchronicity mismatch. Especially the asynchronous DLA undulator is a promising approach, since a simple, commercially available grating suffices for the focusing lattice design. We pave the way towards experiments of radiation generation in these structures and provide estimates of the emitted radiation wavelength and power. The analytical models are validated by numerical simulations in the dedicated DLA simulation tool DLAtrack6D and Astra, where the underlying laser fields are computed by CST Studio.

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“…Applied Physics Letters PERSPECTIVE scitation.org/journal/apl polariton-based x-ray generation schemes, using terahertz-driven surface plasmons, has been proposed. 56 The use of plasmonic metamaterials, such as graphene metamaterials [Fig. 2(e)], provides a means of scaling up the x-ray output intensity of polariton-based undulators by over two orders of magnitude, by supporting a larger interaction volume with the electron beam.…”

Section: Emerging Materials Platforms For X-ray Generationmentioning

confidence: 99%

Prospects in x-ray science emerging from quantum optics and nanomaterials

Wong

Kaminer

2021

Applied Physics Letters

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The science of x-rays is by now over 125 years old, starting with Wilhelm R€ ontgen's discovery of x-rays in 1895, for which R€ ontgen was awarded the first Nobel Prize in Physics. X-rays have fundamentally changed the world in areas, including medical imaging, security scanners, industrial inspection, materials development, and drugs spectroscopy. X-ray science has been so far responsible for over 25 Nobel Prizes in Physics, Chemistry, and Medicine/Physiology. With x-ray generation being a highly commercialized, widely adopted technology, it may appear that there is little left to discover regarding the fundamentals of x-ray science. Contrary to this notion, recent years have shown renewed interest in the research and development of innovative x-ray concepts. We highlight, in this Perspective, promising directions for future research in x-ray science that result from advances in quantum science and in nanomaterials. Specifically, we describe three key opportunities for advancing x-ray science in the near future: (1) emerging material platforms for x-ray generation, especially 2D materials and their heterostructures; (2) free-electron-driven emission of entangled photon-photon and electron-photon pairs for x-ray quantum optics; and (3) shaping free-electron wavepackets for controllable x-ray emission. These research directions could lead to improvements in x-ray resonance fluoroscopy, high-contrast x-ray imaging, stimulated coherent x rays, x-ray superradiance, and other prospects for x-ray quantum optics.

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THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source

Cited by 6 publications

References 37 publications

Beam dynamics in dielectric laser acceleration

Beam dynamics in dielectric laser acceleration

Design Study of a Dielectric Laser Undulator

Prospects in x-ray science emerging from quantum optics and nanomaterials

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