17–22 May 2026
C.I.D
Europe/Zurich timezone

Measurements of CSR radiation at KARA using novel thin-film lithium niobate electro-optical sensors

WEP6050
20 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC6.T03: Beam Diagnostics and Instrumentation Poster session

Speaker

Stefan Funkner (Karlsruhe Institute of Technology)

Description

Electro-optical detection provides a powerful method for characterizing the electric fields of relativistic electron beams and their emitted radiation. We report on the use of novel thin-film lithium niobate electro-optical sensors for the detection of freely propagating terahertz (THz) pulses and, for the first time, measurements of coherent synchrotron radiation (CSR) at the Karlsruhe Research Accelerator (KARA). The thin-film lithium niobate sensors, implemented as integrated Mach–Zehnder interferometers, combine a strong electro-optical response with engineered velocity matching and a compact device geometry, enabling sensitive detection of transient THz fields. Using these Mach–Zehnder interferometer waveguide structures, we demonstrate efficient coupling of CSR to the sensors and present first measurement results.

Funding Agency

G.N. acknowledges funding by BMBF contract number 05K22VKB.

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Author

Gudrun Niehues (Karlsruhe Institute of Technology)

Co-authors

Stefan Funkner (Karlsruhe Institute of Technology) Dr Johannes Steinmann (Karlsruhe Institute of Technology) Marvin Noll (Karlsruhe Institute of Technology) Erik Bruendermann (Karlsruhe Institute of Technology) Anke-Susanne Müller (Karlsruhe Institute of Technology) Seyfollah Toroghi (Partow Technologies (United States)) Payam Rabiei (Partow Technologies (United States)) Ingrid Wilke (Rensselaer Polytechnic Institute)

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