We demonstrate, using a self-consistent approach, that loaded gradients of the order of 1 to 6 [GV/m], efficiencies of 20% to 80%, and electrons flux of 10 14 [el/s] are feasible, without significant concerns regarding damage threshold fluence. We demonstrate guiding of a speed-of- Thosestructures,how- ever, only con ne the accelerating eld in one transverse dimension. 1, D-85748 Garching, Germany 2Department of Physics, Friedrich-Alexander-Universität Erlangen Nürnberg, Staudtstr.

As the main focus, The compact nature of this lens provides a compelling source for dielectric laser accelerator (DLA) beamlines, ultrafast electron diffraction, or ultrafast electron microscopy. The U.S. Department of Energy's Office of Scientific and Technical Information

We experimentally demonstrate several physical concepts necessary for the future development of dielectric laser accelerators—photonic elements that utilize the inelastic interaction between electrons and the optical near fields of laser-illuminated periodic nanostructures. Dielectric laser acceleration of electrons in the vicinity of single and double grating structures—theory and simulations John Breuer1,3, Joshua McNeur2 and Peter Hommelhoff1,2 1Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. High damage field on dielectric and thus high acceleration gradient (up to ~ GeV/m) 3. Furthermore, using this technique, an electron accelerating gradient of 690±100 MV m –1 was measured—a record for dielectric laser accelerators.

PHOTONIC CRYSTAL LASER-DRIVEN ACCELERATOR STRUCTURES ... dielectric photonic crystal accelerator structures, demon-strating synchronouswaveguide modes and discussing rel-evantparametersofsuchmodes[5]. DESIGNING A DIELECTRIC LASER ACCELERATOR ON A CHIP U. Niedermayer , O. Boine-Frankenheim and T. Egenolf, TEMF, TU Darmstadt, Germany Abstract Dielectric Laser Acceleration (DLA) achieves gradients of more than 1GeV/m, which are among the highest in non-plasma accelerators. Max. Novel laser-powered accelerating structures at the miniaturized scale of an optical wavelength (∼ 1 μ m) open a pathway to high repetition rate, attosecond scale electron bunches that can be accelerated with gradients exceeding 1 GeV/m.

gradient of 25 MeV/m observed • At relativistic energies: GeV/m expected • Ultrafast streak camera • Ultrafast beam diagnostics • Acceleration / deflection structures remain to be seen • Huge advantage: progress in laser technology Beam Dynamics in Dielectric Laser Accelerators PhD Position Electrodynamics / Accelerator Physics / Computational Engineering Start: variable, preferred on 1st July 2016 Institut für Theorie Elektromagnetischer Felder Prof. Dr. O. Boine-Frankenheim Fachgebiet Beschleunigerphysik Ansprechpartner/in: Dr.-Ing. In this Letter, we present, to the best of our knowledge, the first demonstration of acceleration of relativistic electrons at a dielectric microstructure driven by femtosecond duration laser pulses. Using an 800 nm, 45 fs pulse-front-tilted laser we demonstrate a record 315 keV energy gain in a dual grating dielectric laser accelerator (DLA) and average accelerating gradients of 560 MV/m over 0.5 mm.