1 research outputs found
GHz sample excitation at the ALBA-PEEM
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