Nanophotonic On-Chip Electron Acceleration
2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)(2023)
摘要
The electric field amplitude produced by a femtosecond laser provides a powerful method to swiftly accelerate electrons. To efficiently couple to free electrons, the laser-electron interaction must be phase-matched. Considering the regime of linear optics, this has been shown to be possible using the inverse Smith-Purcell effect, where a laser generates intense nearfields in a nanophotonic structure designed to match the electron's velocity [1], [2]. Where conventional radiofrequency cavities are typically damage-limited to 100 MV/m and usually operate at 25 MV/m electric fields, dielectric laser accelerator structures have been shown to withstand almost 10 GV/m fields [3] - two orders of magnitude higher. This enables the electron accelerator on a chip [4], because its length can be equally reduced by two orders of magnitude: from meter-size to centimeter-size.
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关键词
conventional radiofrequency cavities,dielectric laser accelerator structures,electric field,electron accelerator,electron velocity,femtosecond laser,free electrons,intense nearfields,inverse Smith-Purcell effect,laser-electron interaction,linear optics,Nanophotonic On-Chip Electron Acceleration,nanophotonic structure,phase-matched
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