Spectrally shaped THz pulses from tapered dielectric waveguides
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929555638321152 |
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| author | Peetermans, Karel Richards, Jonah Kellermeier, Max Floettmann, Klaus Lemery, Francois |
| author_facet | Peetermans, Karel Richards, Jonah Kellermeier, Max Floettmann, Klaus Lemery, Francois |
| contents | In order to exploit the complete scientific potential of user-oriented accelerator facilities, it is necessary to provide adequate pump sources to enable pump-probe science. The users of the European XFEL have requested a THz pump source matching the X-ray repetition rate (10 Hz burst mode with up to 2700 bunches per burst) with a wide range of properties. The quest for suitable THz sources is thus a major development goal. The EuXFEL R\&D project STERN is exploring beam-based radiation generation methods using Cherenkov waveguides to satisfy these user requirements. In this work, custom waveguide geometries are designed to generate a THz pulse with arbitrary spectral content. The layer-thickness or inner radius of a wakefield structure is tapered to generate flattop or Gaussian pulses up to $1 \ \mathrm{THz}$, which can be scaled to higher frequencies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_17975 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spectrally shaped THz pulses from tapered dielectric waveguides Peetermans, Karel Richards, Jonah Kellermeier, Max Floettmann, Klaus Lemery, Francois Accelerator Physics In order to exploit the complete scientific potential of user-oriented accelerator facilities, it is necessary to provide adequate pump sources to enable pump-probe science. The users of the European XFEL have requested a THz pump source matching the X-ray repetition rate (10 Hz burst mode with up to 2700 bunches per burst) with a wide range of properties. The quest for suitable THz sources is thus a major development goal. The EuXFEL R\&D project STERN is exploring beam-based radiation generation methods using Cherenkov waveguides to satisfy these user requirements. In this work, custom waveguide geometries are designed to generate a THz pulse with arbitrary spectral content. The layer-thickness or inner radius of a wakefield structure is tapered to generate flattop or Gaussian pulses up to $1 \ \mathrm{THz}$, which can be scaled to higher frequencies. |
| title | Spectrally shaped THz pulses from tapered dielectric waveguides |
| topic | Accelerator Physics |
| url | https://arxiv.org/abs/2410.17975 |