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Journal Article

GHz sample excitation at the ALBA-PEEM


Ruiz Gómez,  Sandra
Spin3D: Three-Dimensional Magnetic Systems, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Khaliq, M. W., Álvarez, J. M., Camps, A., González, N., Ferrer, J., Martinez-Carboneres, A., et al. (2023). GHz sample excitation at the ALBA-PEEM. Ultramicroscopy, 250: 113757, pp. 1-7. doi:10.1016/j.ultramic.2023.113757.

Cite as: https://hdl.handle.net/21.11116/0000-000D-4087-2
We describe a setup that is used for high-frequency electrical sample excitation in a cathode lens electron microscope with the sample stage at high voltage as used in many synchrotron light sources. Electrical signals are transmitted by dedicated high-frequency components to the printed circuit board supporting the sample. Sub-miniature push-on connectors (SMP) are used to realize the connection in the ultra-high vacuum chamber, bypassing the standard feedthrough. A bandwidth up to 4 GHz with -6 dB attenuation was measured at the sample position, which allows to apply sub-nanosecond pulses. We describe different electronic sample excitation schemes and demonstrate a spatial resolution of 56 nm employing the new setup. © 2023