Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Niedermayer, Uwe"'
Autor:
Broaddus, Payton, Egenolf, Thilo, Black, Dylan S., Murillo, Melanie, Woodahl, Clarisse, Miao, Yu, Niedermayer, Uwe, Byer, Robert L., Leedle, Kenneth J., Solgaard, Olav
We demonstrate a silicon-based electron accelerator that uses laser optical near fields to both accelerate and confine electrons over extended distances. Two dielectric laser accelerator (DLA) designs were tested, each consisting of two arrays of sil
Externí odkaz:
http://arxiv.org/abs/2310.02434
Autor:
Lautenschläger, Jan, Niedermayer, Uwe
Ultrafast electron experiments usually work with low-emittance few-electron pulsed beams. The structures are usually much larger than the (average) electron pulse size posing challenges to the resolution of simulations. We present the tracking code F
Externí odkaz:
http://arxiv.org/abs/2302.06982
Autor:
Schmid, Steffen A., Niedermayer, Uwe
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 a
Externí odkaz:
http://arxiv.org/abs/2206.00593
Limited by the difficulty in acceleration synchronization, it has been a long-term challenge for on-chip dielectric laser-based accelerators (DLA) to bridge the gap between non-relativistic and relativistic regimes. Here, we propose a DLA based on a
Externí odkaz:
http://arxiv.org/abs/2201.12758
Autor:
Leedle, Kenneth J., Niedermayer, Uwe, Skär, Eric, Urbanek, Karel, Miao, Yu, Broaddus, Payton, Solgaard, Olav, Byer, Robert L.
We present two compact ultrafast electron injector designs with integrated focusing that provide high peak brightness of up to $1.9*10^{12} A/m^2Sr^2$ with 10s of electrons per laser pulse using silicon carbide electrodes and silicon nanotip emitters
Externí odkaz:
http://arxiv.org/abs/2201.10583
Autor:
Shiloh, Roy, Illmer, Johannes, Chlouba, Tomáš, Yousefi, Peyman, Schönenberger, Norbert, Niedermayer, Uwe, Mittelbach, Anna, Hommelhoff, Peter
Particle accelerators are essential tools in science, hospitals and industry. Yet, their costs and large footprint, ranging in length from meters to several kilometres, limit their use. The recently demonstrated nanophotonics-based acceleration of ch
Externí odkaz:
http://arxiv.org/abs/2107.02222
Autor:
Niedermayer, Uwe, Black, Dylan S., Leedle, Kenneth J., Miao, Yu, Byer, Robert L., Solgaard, Olav
Publikováno v:
Phys. Rev. Applied 15, 021002 (2021)
We demonstrate a compact technique to compress electron pulses to attosecond length, while keeping the energy spread reasonably small. The technique is based on Dielectric Laser Acceleration (DLA) in nanophotonic silicon structures. Unlike previous b
Externí odkaz:
http://arxiv.org/abs/2008.02147
Publikováno v:
Phys. Rev. Lett. 125, 164801 (2020)
The concept of dielectric-laser acceleration (DLA) provides the highest gradients among breakdown-limited (nonplasma) particle accelerators and thus the potential of miniaturization. The implementation of a fully scalable electron accelerator on a mi
Externí odkaz:
http://arxiv.org/abs/2004.05458
Autor:
Egenolf, Thilo, Niedermayer, Uwe
Dielectric laser acceleration (DLA) is one of the advanced concepts for more compact accelerators. DLA gratings have apertures and period lengths within the range of optical wavelengths. Phase stability and wakefield effects are thus crucial for upco
Externí odkaz:
http://arxiv.org/abs/1911.08396
Publikováno v:
Phys. Rev. Accel. Beams 23, 054402 (2020)
Due to the tiny apertures of dielectric laser acceleration grating structures within the range of the optical wavelength, wakefields limit the bunch charge for relativistic electrons to a few femtocoulomb. In this paper, we present a wakefield upgrad
Externí odkaz:
http://arxiv.org/abs/1911.03337